4.0 1.0 ATL02_20221231235632_01741814_006_01.h5 /catalog/nasa-ngap/ATL02_20221231235632_01741814_006_01.h5_dio.dmrpp short_name String ATL02 level String L1B title String SET_BY_META description String Science unit converted time ordered telemetry calibrated for instrument effects. All photon events per channel per transmit pulse. Includes Atmosphere raw profiles. Contains s/c location data. Conventions String CF-1.6 contributor_name String Thomas A Neumann (thomas.neumann@nasa.gov), Thorsten Markus (thorsten.markus@nasa.gov), Suneel Bhardwaj (suneel.bhardwaj@nasa.gov) David W Hancock III (david.w.hancock@nasa.gov) contributor_role String Instrument Engineer, Investigator, Principle Investigator, Data Producer, Data Producer data_rate String Data within this group pertain to the granule in its entirety. date_type String UTC featureType String trajectory geospatial_lat_units String degrees_north geospatial_lon_units String degrees_east granule_type String ATL02 identifier_product_doi_authority String http://dx.doi.org license String Data may not be reproduced or distributed without including the citation for this product included in this metadata. Data may not be distributed in an altered form without the written permission of the ICESat-2 Science Project Office at NASA/GSFC. naming_authority String http://dx.doi.org spatial_coverage_type String Horizontal standard_name_vocabulary String CF-1.6 time_type String CCSDS UTC-A date_created String 2023-01-03T18:15:50.000000Z hdfversion String HDF5 1.10.7 history String 2023-01-03T18:15:50.000000Z;8add2519-6f47-352b-95c1-dd0a36c20c52;Created by PGE atlas_l1b Version 5.0 identifier_file_uuid String 8add2519-6f47-352b-95c1-dd0a36c20c52 identifier_product_format_version String 5.0 time_coverage_duration Float64 423. time_coverage_end String 2023-01-01T00:03:35.000000Z time_coverage_start String 2022-12-31T23:56:32.000000Z geospatial_lat_min Float64 -26.963315599999998 geospatial_lon_min Float64 -149.89922479999998 geospatial_lat_max Float64 0.024205599999999997 geospatial_lon_max Float64 -147.1225872 publisher_name String NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center publisher_email String nsidc@nsidc.org publisher_url String http://nsidc.org/daac/ identifier_product_type String ATL02 identifier_product_doi String doi:10.5067/ATLAS/ATL02.006 institution String National Aeronautics and Space Administration (NASA) creator_name String GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System summary String The purpose of ATL02 is to provide science-unit, calibrated data for upstream processing. Data converted from raw counts to science units, calibrated for instrument effects and precisely time-tagged. ATL02 provides the position and pointing data needed to precisely geolocate each photon. ATL02 is of limited use to the science community. keywords String EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > SENSOR COUNTS > NONE > NONE > Photons keywords_vocabulary String NASA/GCMD Science Keywords citation String Cite these data in publications as follows: The data used in this study were produced by the ICESat-2 Science Project Office at NASA/GSFC. The data archive site is the NASA National Snow and Ice Data Center Distributed Active Archive Center. processing_level String 1B references String http://nsidc.org/data/icesat2/data.html project String ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 instrument String ATLAS > Advanced Topographic Laser Altimeter System platform String ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 source String Spacecraft build_dmrpp_metadata Container created String 2026-05-05T12:55:41Z build_dmrpp String 3.21.1 bes String 3.21.1 libdap String libdap-3.21.1 invocation String build_dmrpp -f /Users/myang6/work/opendap/hyrax-2144/ATL02_20221231235632_01741814_006_01.h5 -r ATL02_20221231235632_01741814_006_01.h5.dmr -u OPeNDAP_DMRpp_DATA_ACCESS_URL -M ancillary_data release 1 long_name String Release Number units String 1 source String Operations contentType String auxiliaryInformation description String Release number of the granule. The release number is incremented when the software or ancillary data used to create the granule has been changed. end_geoseg 1 long_name String Ending Geolocation Segment units String 1 source String Derived contentType String auxiliaryInformation description String The ending geolocation segment number associated with the data contained within this granule. ICESat granule geographic regions are further refined by geolocation segments. During the geolocation process, a geolocation segment is created approximately every 20m from the start of the orbit to the end. The geolocation segments help align the ATLAS strong a weak beams and provide a common segment length for the L2 and higher products. The geolocation segment indices differ slightly from orbit-to-orbit because of the irregular shape of the Earth. The geolocation segment indices on ATL01 and ATL02 are only approximate because beams have not been aligned at the time of their creation. version 1 long_name String Version units String 1 source String Operations contentType String auxiliaryInformation description String Version number of this granule within the release. It is a sequential number corresponding to the number of times the granule has been reprocessed for the current release. end_region 1 long_name String Ending Region units String 1 source String Derived contentType String auxiliaryInformation description String The ending product-specific region number associated with the data contained within this granule. ICESat-2 data products are separated by geographic regions. The data contained within a specific region are the same for ATL01 and ATL02. ATL03 regions differ slightly because of different geolocation segment locations caused by the irregular shape of the Earth. The region indices for other products are completely independent. atlas_sdp_gps_epoch 1 long_name String ATLAS Epoch Offset units String seconds since 1980-01-06T00:00:00.000000Z source String Operations contentType String auxiliaryInformation description String Number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS Standard Data Product (SDP) epoch (2018-01-01:T00.00.00.000000 UTC). Add this value to delta time parameters to compute full gps_seconds (relative to the GPS epoch) for each data point. end_rgt 1 long_name String Ending Reference Groundtrack units String 1 source String Derived valid_min Int32 1 valid_max Int32 1387 contentType String auxiliaryInformation description String The ending reference groundtrack (RGT) number associated with the data contained within this granule. There are 1387 reference groundtrack in the ICESat-2 repeat orbit. The reference groundtrack increments each time the spacecraft completes a full orbit of the Earth and resets to 1 each time the spacecraft completes a full cycle. end_delta_time 1 long_name String ATLAS End Time (Actual) standard_name String time units String seconds since 2018-01-01 source String Derived contentType String auxiliaryInformation description String Number of GPS seconds since the ATLAS SDP epoch at the last data point in the file. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. end_orbit 1 long_name String Ending Orbit Number units String 1 source String Derived contentType String auxiliaryInformation description String The ending orbit number associated with the data contained within this granule. The orbit number increments each time the spacecraft completes a full orbit of the Earth. start_cycle 1 long_name String Starting Cycle units String 1 source String Derived valid_min Int32 0 valid_max Int32 99 contentType String auxiliaryInformation description String The starting cycle number associated with the data contained within this granule. The cycle number is the counter of the number of 91-day repeat cycles completed by the mission. data_end_utc 1 long_name String End UTC Time of Granule (CCSDS-A, Actual) units String 1 source String Derived contentType String auxiliaryInformation description String UTC (in CCSDS-A format) of the last data point within the granule. control 1 long_name String Control File units String 1 source String Operations contentType String auxiliaryInformation description String PGE-specific control file used to generate this granule. To re-use, replace breaks (BR) with linefeeds. start_gpssow 1 long_name String Start GPS SOW of Granule (Actual) units String seconds source String Derived contentType String auxiliaryInformation description String GPS seconds-of-week of the first data point in the granule. granule_end_utc 1 long_name String End UTC Time of Granule (CCSDS-A, Requested) units String 1 source String Derived contentType String auxiliaryInformation description String Requested end time (in UTC CCSDS-A) of this granule. end_cycle 1 long_name String Ending Cycle units String 1 source String Derived valid_min Int32 0 valid_max Int32 99 contentType String auxiliaryInformation description String The ending cycle number associated with the data contained within this granule. The cycle number is the counter of the number of 91-day repeat cycles completed by the mission. granule_start_utc 1 long_name String Start UTC Time of Granule (CCSDS-A, Requested) units String 1 source String Derived contentType String auxiliaryInformation description String Requested start time (in UTC CCSDS-A) of this granule. start_delta_time 1 long_name String ATLAS Start Time (Actual) standard_name String time units String seconds since 2018-01-01 source String Derived contentType String auxiliaryInformation description String Number of GPS seconds since the ATLAS SDP epoch at the first data point in the file. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. start_geoseg 1 long_name String Starting Geolocation Segment units String 1 source String Derived contentType String auxiliaryInformation description String The starting geolocation segment number associated with the data contained within this granule. ICESat granule geographic regions are further refined by geolocation segments. During the geolocation process, a geolocation segment is created approximately every 20m from the start of the orbit to the end. The geolocation segments help align the ATLAS strong a weak beams and provide a common segment length for the L2 and higher products. The geolocation segment indices differ slightly from orbit-to-orbit because of the irregular shape of the Earth. The geolocation segment indices on ATL01 and ATL02 are only approximate because beams have not been aligned at the time of their creation. start_orbit 1 long_name String Starting Orbit Number units String 1 source String Derived contentType String auxiliaryInformation description String The starting orbit number associated with the data contained within this granule. The orbit number increments each time the spacecraft completes a full orbit of the Earth. data_start_utc 1 long_name String Start UTC Time of Granule (CCSDS-A, Actual) units String 1 source String Derived contentType String auxiliaryInformation description String UTC (in CCSDS-A format) of the first data point within the granule. end_gpsweek 1 long_name String Ending GPSWeek of Granule (Actual) units String weeks from 1980-01-06 source String Derived contentType String auxiliaryInformation description String GPS week number of the last data point in the granule. start_rgt 1 long_name String Starting Reference Groundtrack units String 1 source String Derived valid_min Int32 1 valid_max Int32 1387 contentType String auxiliaryInformation description String The starting reference groundtrack (RGT) number associated with the data contained within this granule. There are 1387 reference groundtrack in the ICESat-2 repeat orbit. The reference groundtrack increments each time the spacecraft completes a full orbit of the Earth and resets to 1 each time the spacecraft completes a full cycle. end_gpssow 1 long_name String Ending GPS SOW of Granule (Actual) units String seconds source String Derived contentType String auxiliaryInformation description String GPS seconds-of-week of the last data point in the granule. qa_at_interval 1 long_name String QA Along-Track Interval units String 1 source String control contentType String auxiliaryInformation description String Statistics time interval for along-track QA data. start_region 1 long_name String Starting Region units String 1 source String Derived contentType String auxiliaryInformation description String The starting product-specific region number associated with the data contained within this granule. ICESat-2 data products are separated by geographic regions. The data contained within a specific region are the same for ATL01 and ATL02. ATL03 regions differ slightly because of different geolocation segment locations caused by the irregular shape of the Earth. The region indices for other products are completely independent. start_gpsweek 1 long_name String Start GPSWeek of Granule (Actual) units String weeks from 1980-01-06 source String Derived contentType String auxiliaryInformation description String GPS week number of the first data point in the granule. Description String Contains information ancillary to the data product. This may include product characteristics, instrument characteristics and/or processing constants. data_rate String Data within this group pertain to the granule in its entirety. calibrations ds_channel 20 ds_fine_counts 75 ds_channel /ancillary_data/calibrations/ds_channel long_name String Channel units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 20 contentType String referenceInformation description String Dimension scale for ATLAS PCE channels (1-16=strong, 17-20=weak) ds_fine_counts /ancillary_data/calibrations/ds_fine_counts units String 1 long_name String Fine Counts source String Dimension Scale valid_min Int8 0 valid_max Int8 74 contentType String referenceInformation description String Dimension scale for ATLAS Time-of-flight fine counts. Description String This group contains calibrations derived from the ATLAS CAL products. DODS_EXTRA Container Unlimited_Dimension String ds_channel ds_fine_counts laser_energy_conversion base_temp 1 long_name String Base Temperature units String degC source String CAL54 contentType String auxiliaryInformation description String Base temperature coefficient. cal54_product 1 long_name String CAL File Name units String 1 source String CAL54 contentType String auxiliaryInformation description String Name of source file containing the calibration data internal 8 long_name String Laser Internal Coeffs units String 1 source String CAL54 contentType String auxiliaryInformation description String Internal laser monitor coefficients (a_(J),b0_(J/count),b1_(J/degC_count),c0_(J/count^2),c1_(J/degC_count^2),d_(J/count^3),e_(J/count^4),std_of_residuals) lrs 8 long_name String LRS Coeffs units String 1 source String CAL54 contentType String auxiliaryInformation description String LRS coefficients a_(J),b0_(J/count),b1_(J/degC_count),c0_(J/count^2),c1_(J/degC_count^2),d_(J/count^3),e_(J/count^4),std_of_residuals spd 8 long_name String SPD Coeffs units String 1 source String CAL54 contentType String auxiliaryInformation description String SPD laser monitor coefficients a_(J),b0_(J/count),b1_(J/degC_count),c0_(J/count^2),c1_(J/degC_count^2),d_(J/count^3),e_(J/count^4),std_of_residuals Description String Contains CAL54 - absolute, energy monitor low_link_impulse_response hist_x 2000 hist_x /ancillary_data/calibrations/low_link_impulse_response/hist_x long_name String Histogram Bin X Values units String 1 source String CAL20 contentType String auxiliaryInformation description String Histogram bin x-values laser 1 long_name String Laser units String 1 source String CAL20 contentType String auxiliaryInformation description String Laser Number mode 1 long_name String Laser Power Setting units String 1 source String CAL20 contentType String auxiliaryInformation description String Laser Power Setting return_source 1 long_name String Return Source units String 1 source String CAL20 valid_min Int32 0 valid_max Int32 3 contentType String auxiliaryInformation description String Source of the events from which the data are derived. flag_meanings String none tep maat echo flag_values Int32 0 1 2 3 cal20_product 1 long_name String CAL Product Name units String 1 source String CAL20 contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data num_bins 1 long_name String Number of Bins units String 1 source String CAL20 contentType String auxiliaryInformation description String Number of bins in the histogram temperature 1 long_name String Temperature units String degreesC contentType String auxiliaryInformation description String Temperature for which calibrations are provided. source String CAL20 bin_width 1 long_name String Bin Width units String seconds source String CAL20 contentType String auxiliaryInformation description String Histogram bin width side 1 long_name String A_or_B units String 1 source String CAL20 valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String A or B Side Component flag_meanings String A B flag_values Int32 1 2 Description String CAL20 - System low link impulse response. Calibrates receiver impulse response, including optical and electrically introduced reflections. pce1 hist /ancillary_data/calibrations/ds_channel /ancillary_data/calibrations/low_link_impulse_response/hist_x long_name String Histogram units String 1 source String CAL20 contentType String auxiliaryInformation description String Per-Channel Histogram total_events /ancillary_data/calibrations/ds_channel long_name String Total Events units String 1 source String CAL20 contentType String auxiliaryInformation description String Number of events used in constructing the per-channel histogram Description String CAL20 - System low link impulse response. Calibrates receiver impulse response, including optical and electrically introduced reflections. pce2 hist /ancillary_data/calibrations/ds_channel /ancillary_data/calibrations/low_link_impulse_response/hist_x long_name String Histogram units String 1 source String CAL20 contentType String auxiliaryInformation description String Per-Channel Histogram total_events /ancillary_data/calibrations/ds_channel long_name String Total Events units String 1 source String CAL20 contentType String auxiliaryInformation description String Number of events used in constructing the per-channel histogram Description String CAL20 - System low link impulse response. Calibrates receiver impulse response, including optical and electrically introduced reflections. pce3 hist /ancillary_data/calibrations/ds_channel /ancillary_data/calibrations/low_link_impulse_response/hist_x long_name String Histogram units String 1 source String CAL20 contentType String auxiliaryInformation description String Per-Channel Histogram total_events /ancillary_data/calibrations/ds_channel long_name String Total Events units String 1 source String CAL20 contentType String auxiliaryInformation description String Number of events used in constructing the per-channel histogram Description String CAL20 - System low link impulse response. Calibrates receiver impulse response, including optical and electrically introduced reflections. rx_sensitivity_to_misalignment elevation 140 azimuth 140 elevation /ancillary_data/calibrations/rx_sensitivity_to_misalignment/elevation long_name String Elevation units String microradians source String CAL47_IMG contentType String auxiliaryInformation description String Elevation azimuth /ancillary_data/calibrations/rx_sensitivity_to_misalignment/azimuth long_name String Azimuth units String microradians source String CAL47_IMG contentType String auxiliaryInformation description String Azimuth azimuth_grid_range 2 long_name String Azimuth Grid Range units String microradians source String CAL47_IMG contentType String auxiliaryInformation description String Azimuth Grid Range cal47_product 6 long_name String CAL Product Name units String 1 source String CAL47_IMG contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data temperature 1 long_name String Temperature units String degC source String CAL47_IMG contentType String auxiliaryInformation description String Reference temperature within the CAL47 product. grid_spacing 1 long_name String Grid Spacing units String microradians source String CAL47_IMG contentType String auxiliaryInformation description String GridSpacing elevation_grid_range 2 long_name String Elevation Grid Range units String microradians source String CAL47_IMG contentType String auxiliaryInformation description String Elevation Grid Range DODS_EXTRA Container Unlimited_Dimension String elevation azimuth Description String CAL47 - Provides a calibration for Receiver Sensitivity as a function of Transmit-to-Receiver Beam Misalignment. pce1 rel_intensity_strong /ancillary_data/calibrations/rx_sensitivity_to_misalignment/azimuth /ancillary_data/calibrations/rx_sensitivity_to_misalignment/elevation long_name String Relative intensity units String 1 source String CAL47_IMG contentType String auxiliaryInformation description String Strong spot relative intensity rel_intensity_weak /ancillary_data/calibrations/rx_sensitivity_to_misalignment/azimuth /ancillary_data/calibrations/rx_sensitivity_to_misalignment/elevation long_name String Relative intensity units String 1 source String CAL47_IMG contentType String auxiliaryInformation description String Weak spot relative intensity Description String CAL47 - Rx Sensitivity as a function of TX-to-IFOV Misalignments. Correlates the residual misalignment of the total 6 beams (given the single BSM AZ/El mirror) interspersed among AMCS calibrations, to apparent shifts in signal gain. pce2 rel_intensity_strong /ancillary_data/calibrations/rx_sensitivity_to_misalignment/azimuth /ancillary_data/calibrations/rx_sensitivity_to_misalignment/elevation long_name String Relative intensity units String 1 source String CAL47_IMG contentType String auxiliaryInformation description String Strong spot relative intensity rel_intensity_weak /ancillary_data/calibrations/rx_sensitivity_to_misalignment/azimuth /ancillary_data/calibrations/rx_sensitivity_to_misalignment/elevation long_name String Relative intensity units String 1 source String CAL47_IMG contentType String auxiliaryInformation description String Weak spot relative intensity Description String CAL47 - Rx Sensitivity as a function of TX-to-IFOV Misalignments. Correlates the residual misalignment of the total 6 beams (given the single BSM AZ/El mirror) interspersed among AMCS calibrations, to apparent shifts in signal gain. pce3 rel_intensity_strong /ancillary_data/calibrations/rx_sensitivity_to_misalignment/azimuth /ancillary_data/calibrations/rx_sensitivity_to_misalignment/elevation long_name String Relative intensity units String 1 source String CAL47_IMG contentType String auxiliaryInformation description String Strong spot relative intensity rel_intensity_weak /ancillary_data/calibrations/rx_sensitivity_to_misalignment/azimuth /ancillary_data/calibrations/rx_sensitivity_to_misalignment/elevation long_name String Relative intensity units String 1 source String CAL47_IMG contentType String auxiliaryInformation description String Weak spot relative intensity Description String CAL47 - Rx Sensitivity as a function of TX-to-IFOV Misalignments. Correlates the residual misalignment of the total 6 beams (given the single BSM AZ/El mirror) interspersed among AMCS calibrations, to apparent shifts in signal gain. receiver_channel_skews Description String CAL49 - Receiver Channel Skews. Timing skews for every rising/fall channel on ATLAS. pce1 cal49_product 1 long_name String CAL Product Name units String 1 source String CAL49 contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data skew_fall /ancillary_data/calibrations/ds_channel long_name String Skew_Fall units String seconds source String CAL49 contentType String auxiliaryInformation description String Per-channel skew (Fall) skew_fall_stderr /ancillary_data/calibrations/ds_channel long_name String Skew_Fall StdErr units String seconds source String CAL49 contentType String auxiliaryInformation description String Standard error of the calculated skew (Fall) skew_rise /ancillary_data/calibrations/ds_channel long_name String Skew_Rise units String seconds source String CAL49 contentType String auxiliaryInformation description String Per-channel skew (Rise) skew_rise_stderr /ancillary_data/calibrations/ds_channel long_name String Skew_Rise StdErr units String seconds source String CAL49 contentType String auxiliaryInformation description String Standard error of the calculated skew (Rise) side 1 long_name String Primary_Redundant units String 1 source String CAL49 valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String Primary or Redundant Component flag_meanings String PRIM REDU flag_values Int32 1 2 temperature 1 long_name String Temperature units String degreesC source String CAL49 contentType String auxiliaryInformation description String Temperature for which calibrations are retrieved. Description String CAL49 - Receiver Channel Skews. Timing skews for every rising/fall channel on ATLAS. pce2 cal49_product 1 long_name String CAL Product Name units String 1 source String CAL49 contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data skew_fall /ancillary_data/calibrations/ds_channel long_name String Skew_Fall units String seconds source String CAL49 contentType String auxiliaryInformation description String Per-channel skew (Fall) skew_fall_stderr /ancillary_data/calibrations/ds_channel long_name String Skew_Fall StdErr units String seconds source String CAL49 contentType String auxiliaryInformation description String Standard error of the calculated skew (Fall) skew_rise /ancillary_data/calibrations/ds_channel long_name String Skew_Rise units String seconds source String CAL49 contentType String auxiliaryInformation description String Per-channel skew (Rise) skew_rise_stderr /ancillary_data/calibrations/ds_channel long_name String Skew_Rise StdErr units String seconds source String CAL49 contentType String auxiliaryInformation description String Standard error of the calculated skew (Rise) side 1 long_name String Primary_Redundant units String 1 source String CAL49 valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String Primary or Redundant Component flag_meanings String PRIM REDU flag_values Int32 1 2 temperature 1 long_name String Temperature units String degreesC source String CAL49 contentType String auxiliaryInformation description String Temperature for which calibrations are retrieved. Description String CAL49 - Receiver Channel Skews. Timing skews for every rising/fall channel on ATLAS. pce3 cal49_product 1 long_name String CAL Product Name units String 1 source String CAL49 contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data skew_fall /ancillary_data/calibrations/ds_channel long_name String Skew_Fall units String seconds source String CAL49 contentType String auxiliaryInformation description String Per-channel skew (Fall) skew_fall_stderr /ancillary_data/calibrations/ds_channel long_name String Skew_Fall StdErr units String seconds source String CAL49 contentType String auxiliaryInformation description String Standard error of the calculated skew (Fall) skew_rise /ancillary_data/calibrations/ds_channel long_name String Skew_Rise units String seconds source String CAL49 contentType String auxiliaryInformation description String Per-channel skew (Rise) skew_rise_stderr /ancillary_data/calibrations/ds_channel long_name String Skew_Rise StdErr units String seconds source String CAL49 contentType String auxiliaryInformation description String Standard error of the calculated skew (Rise) side 1 long_name String Primary_Redundant units String 1 source String CAL49 valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String Primary or Redundant Component flag_meanings String PRIM REDU flag_values Int32 1 2 temperature 1 long_name String Temperature units String degreesC source String CAL49 contentType String auxiliaryInformation description String Temperature for which calibrations are retrieved. Description String CAL49 - Receiver Channel Skews. Timing skews for every rising/fall channel on ATLAS. dead_time_radiometric_signal_loss cal34_product 6 long_name String CAL Product Name units String 1 source String CAL34 contentType String auxiliaryInformation description String Name of ATLAS CAL Products containing the calibration data rad_corr 6 160 498 long_name String Radiometric Correction units String 1 source String CAL34 contentType String auxiliaryInformation description String Radiometric Correction (width, strength, deadtime) strength_strong 6 160 long_name String Strong Beam Strength units String events/shot source String CAL34 contentType String auxiliaryInformation description String Strong spot strength in events/shot (strength, deadtime) dead_time 6 long_name String Dead Time units String ns source String CAL34 contentType String auxiliaryInformation description String Dead time value strength_weak 6 160 long_name String Weak Beam Strength units String events/shot source String CAL34 contentType String auxiliaryInformation description String Weak spot strength in events/shot (strength, deadtime) width 6 498 long_name String Apparent Width units String ns source String CAL34 contentType String auxiliaryInformation description String Apparent width (width, deadtime) Description String CAL34 - Dead-time Radiometric Signal Loss. Contains a table of radiometric corrections versus apparent return strength and width for several dead-time values. Correction is to be multiplied by raw return strength to get corrected return strength first_photon_bias dead_time 6 long_name String Dead Time units String ns source String Derived contentType String auxiliaryInformation description String Dead time value cal19_product 6 long_name String CAL Product Name units String 1 source String Derived contentType String auxiliaryInformation description String Name of ATLAS CAL Products containing the calibration data strength_strong 6 160 long_name String Strong Beam Strength units String events/shot source String Derived contentType String auxiliaryInformation description String Strong spot strength in events/shot (strength, deadtime) strength_weak 6 160 long_name String Weak Beam Strength units String events/shot source String Derived contentType String auxiliaryInformation description String Weak spot strength in events/shot (strength, deadtime) ffb_corr 6 160 498 long_name String FFB Correction units String 1 source String Derived contentType String auxiliaryInformation description String First Photon Bias Correction (width, strength, deadtime) width 6 498 long_name String Apparent Width units String ns source String Derived contentType String auxiliaryInformation description String Apparent width (width, deadtime) Description String CAL19 -First Photon Bias. Provides a correction for first photon bias. effective_cell_delay cal17_product 3 long_name String CAL Product Name units String 1 source String CAL17 contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data Description String CAL17 - PCE Effective Cell Delay. Calibration product for PCE Unit Cell Delay -- a matrix of effective fine counts as a function of temperature, voltage, PCE card, channel, and event edge (rising, falling). pce1 temperature 1 temperature /ancillary_data/calibrations/effective_cell_delay/pce1/temperature long_name String Temperature units String degreesC source String CAL17 contentType String auxiliaryInformation description String Temperature for which calibrations are provided. efc_fall /ancillary_data/calibrations/effective_cell_delay/pce1/temperature /ancillary_data/calibrations/ds_channel /ancillary_data/calibrations/ds_fine_counts long_name String EFC Falling units String counts source String CAL17 contentType String auxiliaryInformation description String Effective Rx falling fine cell count (cell, channel, temp) cal_rise /ancillary_data/calibrations/effective_cell_delay/pce1/temperature long_name String Call Rising units String 1 source String CAL17 contentType String auxiliaryInformation description String Cal_rise value which calibrations are provided (index to raw_cal_rise/256) efc_ll /ancillary_data/calibrations/effective_cell_delay/pce1/temperature /ancillary_data/calibrations/ds_fine_counts long_name String EFC LL units String counts source String CAL17 contentType String auxiliaryInformation description String Effective Tx fine cell count for leading lower (cell, temp) efc_rise /ancillary_data/calibrations/effective_cell_delay/pce1/temperature /ancillary_data/calibrations/ds_channel /ancillary_data/calibrations/ds_fine_counts long_name String EFC Rising units String counts source String CAL17 contentType String auxiliaryInformation description String Effective rising Rx fine cell count (cell, channel, temp) efc_ot /ancillary_data/calibrations/effective_cell_delay/pce1/temperature /ancillary_data/calibrations/ds_fine_counts long_name String EFC Other units String counts source String CAL17 contentType String auxiliaryInformation description String Effective Tx fine cell count for other (cell, temp) cal_fall /ancillary_data/calibrations/effective_cell_delay/pce1/temperature long_name String Call Falling units String 1 source String CAL17 contentType String auxiliaryInformation description String Cal_fall value which calibrations are provided (indexed by raw_cal_fall/256) DODS_EXTRA Container Unlimited_Dimension String temperature Description String CAL17 - PCE Effective Cell Delay. Calibration product for PCE Unit Cell Delay -- a matrix of effective fine counts as a function of temperature, voltage, PCE card, channel, and event edge (rising, falling). pce2 temperature 1 temperature /ancillary_data/calibrations/effective_cell_delay/pce2/temperature long_name String Temperature units String degreesC source String CAL17 contentType String auxiliaryInformation description String Temperature for which calibrations are provided. efc_fall /ancillary_data/calibrations/effective_cell_delay/pce2/temperature /ancillary_data/calibrations/ds_channel /ancillary_data/calibrations/ds_fine_counts long_name String EFC Falling units String counts source String CAL17 contentType String auxiliaryInformation description String Effective Rx falling fine cell count (cell, channel, temp) cal_rise /ancillary_data/calibrations/effective_cell_delay/pce2/temperature long_name String Call Rising units String 1 source String CAL17 contentType String auxiliaryInformation description String Cal_rise value which calibrations are provided (index to raw_cal_rise/256) efc_ll /ancillary_data/calibrations/effective_cell_delay/pce2/temperature /ancillary_data/calibrations/ds_fine_counts long_name String EFC LL units String counts source String CAL17 contentType String auxiliaryInformation description String Effective Tx fine cell count for leading lower (cell, temp) efc_rise /ancillary_data/calibrations/effective_cell_delay/pce2/temperature /ancillary_data/calibrations/ds_channel /ancillary_data/calibrations/ds_fine_counts long_name String EFC Rising units String counts source String CAL17 contentType String auxiliaryInformation description String Effective rising Rx fine cell count (cell, channel, temp) efc_ot /ancillary_data/calibrations/effective_cell_delay/pce2/temperature /ancillary_data/calibrations/ds_fine_counts long_name String EFC Other units String counts source String CAL17 contentType String auxiliaryInformation description String Effective Tx fine cell count for other (cell, temp) cal_fall /ancillary_data/calibrations/effective_cell_delay/pce2/temperature long_name String Call Falling units String 1 source String CAL17 contentType String auxiliaryInformation description String Cal_fall value which calibrations are provided (indexed by raw_cal_fall/256) DODS_EXTRA Container Unlimited_Dimension String temperature Description String CAL17 - PCE Effective Cell Delay. Calibration product for PCE Unit Cell Delay -- a matrix of effective fine counts as a function of temperature, voltage, PCE card, channel, and event edge (rising, falling). pce3 temperature 1 temperature /ancillary_data/calibrations/effective_cell_delay/pce3/temperature long_name String Temperature units String degreesC source String CAL17 contentType String auxiliaryInformation description String Temperature for which calibrations are provided. efc_fall /ancillary_data/calibrations/effective_cell_delay/pce3/temperature /ancillary_data/calibrations/ds_channel /ancillary_data/calibrations/ds_fine_counts long_name String EFC Falling units String counts source String CAL17 contentType String auxiliaryInformation description String Effective Rx falling fine cell count (cell, channel, temp) cal_rise /ancillary_data/calibrations/effective_cell_delay/pce3/temperature long_name String Call Rising units String 1 source String CAL17 contentType String auxiliaryInformation description String Cal_rise value which calibrations are provided (index to raw_cal_rise/256) efc_ll /ancillary_data/calibrations/effective_cell_delay/pce3/temperature /ancillary_data/calibrations/ds_fine_counts long_name String EFC LL units String counts source String CAL17 contentType String auxiliaryInformation description String Effective Tx fine cell count for leading lower (cell, temp) efc_rise /ancillary_data/calibrations/effective_cell_delay/pce3/temperature /ancillary_data/calibrations/ds_channel /ancillary_data/calibrations/ds_fine_counts long_name String EFC Rising units String counts source String CAL17 contentType String auxiliaryInformation description String Effective rising Rx fine cell count (cell, channel, temp) efc_ot /ancillary_data/calibrations/effective_cell_delay/pce3/temperature /ancillary_data/calibrations/ds_fine_counts long_name String EFC Other units String counts source String CAL17 contentType String auxiliaryInformation description String Effective Tx fine cell count for other (cell, temp) cal_fall /ancillary_data/calibrations/effective_cell_delay/pce3/temperature long_name String Call Falling units String 1 source String CAL17 contentType String auxiliaryInformation description String Cal_fall value which calibrations are provided (indexed by raw_cal_fall/256) DODS_EXTRA Container Unlimited_Dimension String temperature Description String CAL17 - PCE Effective Cell Delay. Calibration product for PCE Unit Cell Delay -- a matrix of effective fine counts as a function of temperature, voltage, PCE card, channel, and event edge (rising, falling). nominal_rx_sensitivity cal30_product 1 long_name String CAL Product Name units String 1 source String CAL30 contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data side 1 long_name String Detector Bank Side units String 1 source String CAL30 valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String A or B side of the detector bank flag_meanings String A B flag_values Int32 1 2 Description String CAL30 - Nominal Rx Sensitivity. Receiver radiometric sensitivity, in an absolute measurement, with all variables (temperature, bias, alignment) set to nominal values. pce1 rms_resid_strong 1 long_name String RMS Residual units String 1 source String CAL30 contentType String auxiliaryInformation description String Strong spot RMS Residual fraction rms_resid_weak 1 long_name String RMS Residual units String 1 source String CAL30 contentType String auxiliaryInformation description String Weak spot RMS Residual fraction sdev_strong 1 long_name String sdev_strong units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Strong spot standard deviation slope_strong 1 long_name String Slope units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Strong spot Slope sdev_weak 1 long_name String sdev_weak units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Weak spot standard deviation slope_weak 1 long_name String Slope units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Weak spot Slope Description String CAL30 - Nominal Rx Sensitivity. Receiver radiometric sensitivity, in an absolute measurement, with all variables (temperature, bias, alignment ) set to nominal values. pce2 rms_resid_strong 1 long_name String RMS Residual units String 1 source String CAL30 contentType String auxiliaryInformation description String Strong spot RMS Residual fraction rms_resid_weak 1 long_name String RMS Residual units String 1 source String CAL30 contentType String auxiliaryInformation description String Weak spot RMS Residual fraction sdev_strong 1 long_name String sdev_strong units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Strong spot standard deviation slope_strong 1 long_name String Slope units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Strong spot Slope sdev_weak 1 long_name String sdev_weak units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Weak spot standard deviation slope_weak 1 long_name String Slope units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Weak spot Slope Description String CAL30 - Nominal Rx Sensitivity. Receiver radiometric sensitivity, in an absolute measurement, with all variables (temperature, bias, alignment ) set to nominal values. pce3 rms_resid_strong 1 long_name String RMS Residual units String 1 source String CAL30 contentType String auxiliaryInformation description String Strong spot RMS Residual fraction rms_resid_weak 1 long_name String RMS Residual units String 1 source String CAL30 contentType String auxiliaryInformation description String Weak spot RMS Residual fraction sdev_strong 1 long_name String sdev_strong units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Strong spot standard deviation slope_strong 1 long_name String Slope units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Strong spot Slope sdev_weak 1 long_name String sdev_weak units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Weak spot standard deviation slope_weak 1 long_name String Slope units String counts/s/pW source String CAL30 contentType String auxiliaryInformation description String Weak spot Slope Description String CAL30 - Nominal Rx Sensitivity. Receiver radiometric sensitivity, in an absolute measurement, with all variables (temperature, bias, alignment ) set to nominal values. laser_energy_fraction cal45_product 1 long_name String CAL File Name units String 1 source String CAL45 contentType String auxiliaryInformation description String Name of source file containing the calibration data energy_fract 6 long_name String Energy Fraction units String 1 source String CAL45 contentType String auxiliaryInformation description String Energy Fraction, Per Spot optics_throughput 3 long_name String Optics Throughput units String 1 source String CAL45 contentType String auxiliaryInformation description String Optics Throughput, Per PCE Description String Contains CAL45 data - Transmit Energy Fraction per Beam rx_sensitivity_vs_wtom laser 1 long_name String Laser units String 1 source String CAL61 contentType String auxiliaryInformation description String Laser Number mode 1 long_name String Laser Power Setting units String 1 source String CAL61 contentType String auxiliaryInformation description String Laser Power Setting temperature 1 long_name String Temperature units String degreesC source String CAL61 contentType String auxiliaryInformation description String Temperature for which calibrations are provided. cal61_product 1 long_name String CAL Product Name units String 1 source String CAL61 contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data side 1 long_name String Detector Bank Side units String 1 source String CAL61 valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String A or B side of the detector bank flag_meanings String A B flag_values Int32 1 2 Description String CAL61 - Rx Sensitivity vs. WTOM Ratio. Provides parameter values, for each spot, for the fit of Relative Sensitivity based on the reported WTEM through a quadratic curve. pce1 h_strong 1 long_name String h_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String h_strong; used in Eqn 5-17. rms_of_fit_strong 1 long_name String rms_of_fit_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String rms_of_fit_strong ypeak_strong 1 long_name String ypeak_strong units String counts/s source String CAL61 contentType String auxiliaryInformation description String ypeak_strong sdev_ypeak_weak 1 long_name String sdev_ypeak_weak units String counts/s source String CAL61 contentType String auxiliaryInformation description String sdev_ypeak_weak sdev_xpeak_weak 1 long_name String sdev_xpeak_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_xpeak_weak xpeak_weak 1 long_name String xpeak_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String xpeak_weak; used in Eqn 5-17. h_weak 1 long_name String h_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String h_weak; used in Eqn 5-17. sdev_ypeak_strong 1 long_name String sdev_ypeak_strong units String counts/s source String CAL61 contentType String auxiliaryInformation description String sdev_ypeak_strong ypeak_weak 1 long_name String ypeak_weak units String counts/s source String CAL61 contentType String auxiliaryInformation description String ypeak_weak xpeak_strong 1 long_name String xpeak_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String xpeak_strong; used in Eqn 5-17. rms_of_fit_weak 1 long_name String rms_of_fit_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String rms_of_fit_weak sdev_xpeak_strong 1 long_name String sdev_xpeak_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_xpeak_strong sdev_h_weak 1 long_name String sdev_h_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_h_weak sdev_h_strong 1 long_name String sdev_h_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_h_strong Description String CAL61 - Rx Sensitivity vs. WTOM Ratio. Calibration of receiver throughput as a function of the WTOM/WTEM diode signals (D1, D2) to indicate quality of the spectral tuning of the OFMs (etalons) for each receiver IFOV. pce2 h_strong 1 long_name String h_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String h_strong; used in Eqn 5-17. rms_of_fit_strong 1 long_name String rms_of_fit_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String rms_of_fit_strong ypeak_strong 1 long_name String ypeak_strong units String counts/s source String CAL61 contentType String auxiliaryInformation description String ypeak_strong sdev_ypeak_weak 1 long_name String sdev_ypeak_weak units String counts/s source String CAL61 contentType String auxiliaryInformation description String sdev_ypeak_weak sdev_xpeak_weak 1 long_name String sdev_xpeak_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_xpeak_weak xpeak_weak 1 long_name String xpeak_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String xpeak_weak; used in Eqn 5-17. h_weak 1 long_name String h_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String h_weak; used in Eqn 5-17. sdev_ypeak_strong 1 long_name String sdev_ypeak_strong units String counts/s source String CAL61 contentType String auxiliaryInformation description String sdev_ypeak_strong ypeak_weak 1 long_name String ypeak_weak units String counts/s source String CAL61 contentType String auxiliaryInformation description String ypeak_weak xpeak_strong 1 long_name String xpeak_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String xpeak_strong; used in Eqn 5-17. rms_of_fit_weak 1 long_name String rms_of_fit_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String rms_of_fit_weak sdev_xpeak_strong 1 long_name String sdev_xpeak_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_xpeak_strong sdev_h_weak 1 long_name String sdev_h_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_h_weak sdev_h_strong 1 long_name String sdev_h_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_h_strong Description String CAL61 - Rx Sensitivity vs. WTOM Ratio. Calibration of receiver throughput as a function of the WTOM/WTEM diode signals (D1, D2) to indicate quality of the spectral tuning of the OFMs (etalons) for each receiver IFOV. pce3 h_strong 1 long_name String h_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String h_strong; used in Eqn 5-17. rms_of_fit_strong 1 long_name String rms_of_fit_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String rms_of_fit_strong ypeak_strong 1 long_name String ypeak_strong units String counts/s source String CAL61 contentType String auxiliaryInformation description String ypeak_strong sdev_ypeak_weak 1 long_name String sdev_ypeak_weak units String counts/s source String CAL61 contentType String auxiliaryInformation description String sdev_ypeak_weak sdev_xpeak_weak 1 long_name String sdev_xpeak_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_xpeak_weak xpeak_weak 1 long_name String xpeak_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String xpeak_weak; used in Eqn 5-17. h_weak 1 long_name String h_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String h_weak; used in Eqn 5-17. sdev_ypeak_strong 1 long_name String sdev_ypeak_strong units String counts/s source String CAL61 contentType String auxiliaryInformation description String sdev_ypeak_strong ypeak_weak 1 long_name String ypeak_weak units String counts/s source String CAL61 contentType String auxiliaryInformation description String ypeak_weak xpeak_strong 1 long_name String xpeak_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String xpeak_strong; used in Eqn 5-17. rms_of_fit_weak 1 long_name String rms_of_fit_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String rms_of_fit_weak sdev_xpeak_strong 1 long_name String sdev_xpeak_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_xpeak_strong sdev_h_weak 1 long_name String sdev_h_weak units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_h_weak sdev_h_strong 1 long_name String sdev_h_strong units String 1 source String CAL61 contentType String auxiliaryInformation description String sdev_h_strong Description String CAL61 - Rx Sensitivity vs. WTOM Ratio. Calibration of receiver throughput as a function of the WTOM/WTEM diode signals (D1, D2) to indicate quality of the spectral tuning of the OFMs (etalons) for each receiver IFOV. start_timing_skews lu_ll1 1 long_name String LU-LL1 units String seconds source String CAL44 contentType String auxiliaryInformation description String LU-LL1 ll3_ll1 1 long_name String LL3-LL1 units String seconds source String CAL44 contentType String auxiliaryInformation description String LL3-LL1 ll2_ll1 1 long_name String LL2-LL1 units String seconds source String CAL44 contentType String auxiliaryInformation description String LL2-LL1 ll1 1 long_name String LL1 units String seconds source String CAL44 contentType String auxiliaryInformation description String Leading Lower Skew, PCE1 cal44_product 1 long_name String CAL Product Name units String 1 source String CAL44 contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data tl_ll3 1 long_name String TL-LL3 units String seconds source String CAL44 contentType String auxiliaryInformation description String TL-LL3 side 1 long_name String SPD Side units String 1 source String CAL44 valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String A or B side of the Start Pulse Detector flag_meanings String A B flag_values Int32 1 2 spd_temp 1 long_name String SPD_Temp units String degreesC source String CAL44 contentType String auxiliaryInformation description String SPD Temperature tu_ll2 1 long_name String TU-LL2 source String CAL44 contentType String auxiliaryInformation description String TU-LL2 units String seconds Description String CAL44 - Start Timing Skews. Produces START pulse timing skews within & among PCEs to properly align all start pulse timing channels. dead_time cal42_product 1 long_name String CAL Product Name units String 1 contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data source String CAL42 temperature 1 long_name String Temperature units String degreesC source String CAL42 contentType String auxiliaryInformation description String Temperature for which calibrations are provided. side 1 long_name String Detector Bank Side units String 1 source String CAL42 valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String A or B side of the detector bank flag_meanings String A B flag_values Int32 1 2 Description String CAL42 - Dead-time. Estimates dead time for each ATLAS receiver channel accompanied by an estimated standard deviation for that measurement. photoelectrons/spot/shot, channel-to-channel basis. pce1 dead_time /ancillary_data/calibrations/ds_channel long_name String DeadTime units String seconds source String CAL42 contentType String auxiliaryInformation description String Dead Time (channel) sigma /ancillary_data/calibrations/ds_channel long_name String Sigma units String seconds source String CAL42 contentType String auxiliaryInformation description String Sigma (channel) Description String CAL42 - Dead-time. Estimates dead time for each ATLAS receiver channel accompanied by an estimated standard deviation for that measurement. photoelectrons/spot/shot, channel-to-channel basis. pce2 dead_time /ancillary_data/calibrations/ds_channel long_name String DeadTime units String seconds source String CAL42 contentType String auxiliaryInformation description String Dead Time (channel) sigma /ancillary_data/calibrations/ds_channel long_name String Sigma units String seconds source String CAL42 contentType String auxiliaryInformation description String Sigma (channel) Description String CAL42 - Dead-time. Estimates dead time for each ATLAS receiver channel accompanied by an estimated standard deviation for that measurement. photoelectrons/spot/shot, channel-to-channel basis. pce3 dead_time /ancillary_data/calibrations/ds_channel long_name String DeadTime units String seconds source String CAL42 contentType String auxiliaryInformation description String Dead Time (channel) sigma /ancillary_data/calibrations/ds_channel long_name String Sigma units String seconds source String CAL42 contentType String auxiliaryInformation description String Sigma (channel) Description String CAL42 - Dead-time. Estimates dead time for each ATLAS receiver channel accompanied by an estimated standard deviation for that measurement. photoelectrons/spot/shot, channel-to-channel basis. hv_bias_receiver_radiometric_sensitivity cal46_product 1 long_name String CAL Product Name units String 1 source String CAL46 contentType String auxiliaryInformation description String Name of ATLAS CAL Product containing the calibration data side 1 long_name String Detector Bank Side units String 1 source String CAL46 valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String A or B side of the detector bank flag_meanings String A B flag_values Int32 1 2 Description String CAL46 - Relationship describing detector responsivity as the PMT high voltage deviates from nominal high voltage setting (V0). pce2 rnom_weak 1 long_name String r_nom units String 1 source String CAL46 contentType String auxiliaryInformation description String Weak spot Rnom npoints_weak 1 long_name String npoints_weak units String 1 source String CAL46 contentType String auxiliaryInformation description String Weak spot number of points sigma_fit_weak 1 long_name String sigma_fit_weak units String 1 source String CAL46 contentType String auxiliaryInformation description String Weak spot sigma of fit sigma_b_strong 1 long_name String sigma_b_strong units String 1/v contentType String auxiliaryInformation description String Strong spot sigma of coefficient b source String CAL46 vnom_strong 1 long_name String v_nom units String v source String CAL46 contentType String auxiliaryInformation description String Strong spot nominal voltage sigma_fit_strong 1 long_name String sigma_fit_strong units String 1 source String CAL46 contentType String auxiliaryInformation description String Strong spot sigma of fit sigma_c_weak 1 long_name String sigma_c_weak units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Weak spot sigma of coefficient c c_strong 1 long_name String c_strong units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Strong spot coefficient c b_weak 1 long_name String b_weak units String 1/v source String CAL46 contentType String auxiliaryInformation description String Weak spot coefficient b sigma_b_weak 1 long_name String sigma_b_weak units String 1/v source String CAL46 contentType String auxiliaryInformation description String Weak spot sigma of coefficient b sigma_c_strong 1 long_name String sigma_c_strong units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Strong spot sigma of coefficient c rnom_strong 1 long_name String r_nom units String 1 source String CAL46 contentType String auxiliaryInformation description String Strong spot Rnom vnom_weak 1 long_name String v_nom units String v source String CAL46 contentType String auxiliaryInformation description String Weak spot nominal voltage b_strong 1 long_name String b_strong units String 1/v source String CAL46 contentType String auxiliaryInformation description String Strong spot coefficient b c_weak 1 long_name String c_weak units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Weak spot coefficient c npoints_strong 1 long_name String npoints_strong units String 1 source String CAL46 contentType String auxiliaryInformation description String Strong spot number of points Description String CAL46 - Per-PCE. pce3 rnom_weak 1 long_name String r_nom units String 1 source String CAL46 contentType String auxiliaryInformation description String Weak spot Rnom npoints_weak 1 long_name String npoints_weak units String 1 source String CAL46 contentType String auxiliaryInformation description String Weak spot number of points sigma_fit_weak 1 long_name String sigma_fit_weak units String 1 source String CAL46 contentType String auxiliaryInformation description String Weak spot sigma of fit sigma_b_strong 1 long_name String sigma_b_strong units String 1/v contentType String auxiliaryInformation description String Strong spot sigma of coefficient b source String CAL46 vnom_strong 1 long_name String v_nom units String v source String CAL46 contentType String auxiliaryInformation description String Strong spot nominal voltage sigma_fit_strong 1 long_name String sigma_fit_strong units String 1 source String CAL46 contentType String auxiliaryInformation description String Strong spot sigma of fit sigma_c_weak 1 long_name String sigma_c_weak units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Weak spot sigma of coefficient c c_strong 1 long_name String c_strong units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Strong spot coefficient c b_weak 1 long_name String b_weak units String 1/v source String CAL46 contentType String auxiliaryInformation description String Weak spot coefficient b sigma_b_weak 1 long_name String sigma_b_weak units String 1/v source String CAL46 contentType String auxiliaryInformation description String Weak spot sigma of coefficient b sigma_c_strong 1 long_name String sigma_c_strong units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Strong spot sigma of coefficient c rnom_strong 1 long_name String r_nom units String 1 source String CAL46 contentType String auxiliaryInformation description String Strong spot Rnom vnom_weak 1 long_name String v_nom units String v source String CAL46 contentType String auxiliaryInformation description String Weak spot nominal voltage b_strong 1 long_name String b_strong units String 1/v source String CAL46 contentType String auxiliaryInformation description String Strong spot coefficient b c_weak 1 long_name String c_weak units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Weak spot coefficient c npoints_strong 1 long_name String npoints_strong units String 1 source String CAL46 contentType String auxiliaryInformation description String Strong spot number of points Description String CAL46 - Per-PCE. pce1 rnom_weak 1 long_name String r_nom units String 1 source String CAL46 contentType String auxiliaryInformation description String Weak spot Rnom npoints_weak 1 long_name String npoints_weak units String 1 source String CAL46 contentType String auxiliaryInformation description String Weak spot number of points sigma_fit_weak 1 long_name String sigma_fit_weak units String 1 source String CAL46 contentType String auxiliaryInformation description String Weak spot sigma of fit sigma_b_strong 1 long_name String sigma_b_strong units String 1/v contentType String auxiliaryInformation description String Strong spot sigma of coefficient b source String CAL46 vnom_strong 1 long_name String v_nom units String v source String CAL46 contentType String auxiliaryInformation description String Strong spot nominal voltage sigma_fit_strong 1 long_name String sigma_fit_strong units String 1 source String CAL46 contentType String auxiliaryInformation description String Strong spot sigma of fit sigma_c_weak 1 long_name String sigma_c_weak units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Weak spot sigma of coefficient c c_strong 1 long_name String c_strong units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Strong spot coefficient c b_weak 1 long_name String b_weak units String 1/v source String CAL46 contentType String auxiliaryInformation description String Weak spot coefficient b sigma_b_weak 1 long_name String sigma_b_weak units String 1/v source String CAL46 contentType String auxiliaryInformation description String Weak spot sigma of coefficient b sigma_c_strong 1 long_name String sigma_c_strong units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Strong spot sigma of coefficient c rnom_strong 1 long_name String r_nom units String 1 source String CAL46 contentType String auxiliaryInformation description String Strong spot Rnom vnom_weak 1 long_name String v_nom units String v source String CAL46 contentType String auxiliaryInformation description String Weak spot nominal voltage b_strong 1 long_name String b_strong units String 1/v source String CAL46 contentType String auxiliaryInformation description String Strong spot coefficient b c_weak 1 long_name String c_weak units String 1/v^2 source String CAL46 contentType String auxiliaryInformation description String Weak spot coefficient c npoints_strong 1 long_name String npoints_strong units String 1 source String CAL46 contentType String auxiliaryInformation description String Strong spot number of points Description String CAL46 - Per-PCE. isf bias_offset_y 2 long_name String AMCS Bias Offset Y units String microradians source String ANC27 (ATBD Section 5.3.3.1) contentType String auxiliaryInformation description String Zero is center of BSM range: (x,y)=(8000,8000). Used in Eqn 5-13 to generate coordinates that are used in Eqn 5-11 to interpolate CAL 47, which has 1 R grid spacing. wtom_lambda_off 1 long_name String WTOM Wavelength Offset units String 1 contentType String auxiliaryInformation description String WTOM Wavelength Offset. Currently zero. An "off-tuning" value to be used with alternate tuning; method for calculating not defined. source String ANC27 (ATBD Section 5.3.3.2) start_time_coeff 8 4 long_name String Start Time Coefficients units String ns source String ANC27 (ATBD Section 3.5.6) contentType String auxiliaryInformation description String Start time coefficients for TOF center correction (coefficent x scenario) bias_offset_x 2 long_name String AMCS Bias Offset X units String microradians source String ANC27 (ATBD Section 5.3.3.1) contentType String auxiliaryInformation description String Zero is center of BSM range: (x,y)=(8000,8000). Used in Eqn 5-13 to generate coordinates that are used in Eqn 5-11 to interpolate CAL 47, which has 1 R grid spacing. wtom_tune_flag 1 long_name String WTOM Tuning Flag units String 1 source String ANC27 (ATBD Section 5.3.3.2) valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String WTOM Tuning Flag (1=standard method, 2=alternate method) flag_meanings String std alt flag_values Int32 1 2 cal46_aging 1 long_name String CAL46 Aging Factor units String 1 source String ANC27 (ATBD Section 5.3.14) contentType String auxiliaryInformation description String CAL46 Aging correction factor bias_time 2 long_name String AMCS Bias Time units String seconds since 2018-01-01 source String ANC27 (ATBD Section 5.3.3.1) contentType String auxiliaryInformation description String Times of surrounding AMCS bias corrections wtom_alt_tune_corr 1 long_name String WTOM Alt Tuning Correction units String 1 source String ANC27 (ATBD Section 5.3.3.2) contentType String auxiliaryInformation description String W" in Eqn 5-15. Used only for alternate tuning; method for calculating not defined. uso_freq_dev 1 long_name String USO Frequence Deviation units String hz source String ANC27 contentType String auxiliaryInformation description String USO frequency deviation; Used in Eqn 2-4. bias_rate 1 long_name String AMCS bias rate units String microradians/undefined_time source String ANC27 (ATBD Section 5.3.3.1) contentType String auxiliaryInformation description String Currently a placeholder, not used in calculations. Description String Constants and calibrations provided by the ICESat-2 Instrument Support Facility (via ANC27) housekeeping hvpc_ab_flag 1 long_name String HVPC Side, A or B units String 1 source String Derived, L1B ATBD valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String Indicates if the active High Voltage Power Converter (HVPC) is side A (1) or side B (2). flag_meanings String a b flag_values Int32 1 2 det_ab_flag 1 long_name String Detector Side, A or B units String 1 source String Derived, L1B ATBD valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String Indicates if the active detector (DET) is side A (1) or side B (2). flag_meanings String a b flag_values Int32 1 2 laser_12_flag 1 long_name String Laser 1 or Laser 2 units String 1 valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String Indicates if the active Laser is laser 1 or laser 2. flag_meanings String 1 2 flag_values Int32 1 2 source String Derived, L1B ATBD lrs_ab_flag 1 long_name String LRS Side A or B units String 1 source String Derived, L1B ATBD valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String Indicates if the active LRS is side A (1) or side B (2). flag_meanings String a b flag_values Int32 1 2 pdu_ab_flag 1 long_name String PDU Side A or B units String 1 valid_max Int32 2 contentType String auxiliaryInformation description String Indicates if the active PDU is side a (1) or side b (2). flag_meanings String a b flag_values Int32 1 2 source String Derived, L1B ATBD valid_min Int32 1 spd_ab_flag 1 long_name String SPD A or B units String 1 source String Derived, L1B ATBD valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String Indicates if the active Start Pulse Detector (SPD) is side a (1) or side b (2). flag_meanings String a b flag_values Int32 1 2 tams_ab_flag 1 long_name String TAMS Side A or B units String 1 source String Derived, L1B ATBD valid_min Int32 1 valid_max Int32 2 contentType String auxiliaryInformation description String Indicates if the active TAMS is side a (1) or side b (2). flag_meanings String a b flag_values Int32 1 2 Description String Constants and calibrations related to ATLAS housekeeping data. tep tep_check_pce1 1 long_name String TEP flag for PCE1. units String 1 source String ATLAS L1B ATBD valid_min Int32 0 valid_max Int32 1 contentType String auxiliaryInformation description String Flag indicating that the PCE1 strong channels should be checked for TEP events. Default value is 1 (indicating that TEP is possible on PCE1). A value of 0 indicates that PCE1 data are not examined for TEP. flag_meanings String do_not_check check flag_values Int32 0 1 tep_check_pce2 1 long_name String TEP flag for PCE2. units String 1 source String ATLAS L1B ATBD valid_min Int32 0 valid_max Int32 1 contentType String auxiliaryInformation description String Flag indicating that the PCE2 strong channels should be checked for TEP events. Default value is 1 (indicating that TEP is possible on PCE2). A value of 0 indicates that PCE2 data are not examined for TEP. flag_meanings String do_not_check check flag_values Int32 0 1 tep_check_pce3 1 long_name String TEP flag for PCE3. units String 1 source String ATLAS L1B ATBD valid_min Int32 0 valid_max Int32 1 contentType String auxiliaryInformation description String Flag indicating that the PCE3 strong channels should be checked for TEP events. Default value is 0 (indicating that TEP is not possible on PCE3). A value of 1 indicates that PCE3 data are examined for TEP (even though the hardware does not support this possibility). flag_meanings String do_not_check check flag_values Int32 0 1 thres_tep_max 1 long_name String TEP Detection Maximum units String seconds source String ATLAS L1B ATBD contentType String auxiliaryInformation description String Maximum value used to classify TEP photons. Default value per ATBD is 100ns. (100e-9 sec) thres_tep_min 1 long_name String TEP Detection Minimum units String seconds contentType String auxiliaryInformation description String Minimum value used to classify TEP photons. Default value per ATBD is 0ns. (0e-9 sec) source String ATLAS L1B ATBD Description String Contains ancillary values related to TEP detection. tod_tof lrs_clock 1 long_name String LRS Clock Rate units String seconds/count source String ATLAS L1B ATBD contentType String auxiliaryInformation description String The nominal rate of the LRS internal 27 MHz oscillator (divided by 32). corr_rx_coarse_pce3 20 long_name String Correction value for PCE3 Rx coarse clock offset units String counts source String ATLAS L1B ATBD contentType String auxiliaryInformation description String Correction for the PCE3 Receive coarse clock offset. This corrects for the offset between the actual number of coarse clock cycles and the reported number of coarse clock cycles (for each channel). Default value is -1. tof_win_size 1 long_name String Size of TOF Histogram Windows units String seconds source String ATLAS L1B ATBD, contentType String auxiliaryInformation description String Size of the TxRx slip detection windows within the peak-aligned, windowed TOF histograms. tof_extracted_s 1 long_name String Duration of TOF Histogram Window units String seconds source String ATLAS L1B ATBD, contentType String auxiliaryInformation description String Duration of peak-aligned, windowed TOF histograms. dt_t0 1 long_name String T0 Clock Tick units String seconds/count source String ATLAS L1B ATBD, Section 4.2.1 contentType String auxiliaryInformation description String T0 clock tick. tof_bin_size 1 long_name String TOF Histogram Bin Size units String seconds source String ATLAS L1B ATBD, contentType String auxiliaryInformation description String Binsize of peak-aligned, windowed TOF histograms. tof_lower_win_ctr 1 long_name String Center of TOF Histogram Lower Window units String seconds source String ATLAS L1B ATBD, contentType String auxiliaryInformation description String Center of the lower TxRx slip detection window within the peak-aligned, windowed TOF histograms. tof_upper_win_ctr 1 long_name String Center of TOF Histogram Upper Window units String seconds source String ATLAS L1B ATBD, contentType String auxiliaryInformation description String Center of the upper TxRx slip detection window within the peak-aligned, windowed TOF histograms. corr_tx_coarse_pce2 1 long_name String Correction value for PCE2 Tx coarse clock offset units String counts source String ATLAS L1B ATBD contentType String auxiliaryInformation description String Correction for the PCE2 Transmit coarse clock offset. This corrects for the offset between the actual number of coarse clock cycles and the reported number of coarse clock cycles. Default value is -1. corr_rx_coarse_pce2 20 long_name String Correction value for PCE2 Rx coarse clock offset units String counts source String ATLAS L1B ATBD contentType String auxiliaryInformation description String Correction for the PCE2 Receive coarse clock offset. This corrects for the offset between the actual number of coarse clock cycles and the reported number of coarse clock cycles (for each channel). Default value is -1. dt_uso 1 long_name String USO (AMET) Clock Tick units String seconds/count source String ATLAS L1B ATBD, Section 4.2.1 contentType String auxiliaryInformation description String The AMET clock tick min_conf 1 long_name String Minimum Confidence units String 1 source String ATLAS L1B ATBD, contentType String auxiliaryInformation description String Minimum TxRx histogram confidence level to fail a granule. dt_imet 1 long_name String IMET Clock Tick units String seconds/count source String ATLAS L1B ATBD, Section 4.2.1 contentType String auxiliaryInformation description String IMET clock tick. corr_tx_coarse_pce3 1 long_name String Correction value for PCE3 Tx coarse clock offset units String counts source String ATLAS L1B ATBD contentType String auxiliaryInformation description String Correction for the PCE3 Transmit coarse clock offset. This corrects for the offset between the actual number of coarse clock cycles and the reported number of coarse clock cycles. Default value is -1. dupe_fc_tol 1 long_name String Duplicate_Tolerance units String counts source String ATLAS L1B ATBD contentType String auxiliaryInformation description String Tolerance used when comparing fine counts within duplicate detection discard_short_mframes 1 long_name String Discard_Short_MFrames units String 1 contentType String auxiliaryInformation description String If TRUE, discard the photons associated with major frames containing less than 199 Tx. source String ATLAS L1B ATBD, repair_txrx_slip 1 long_name String TXRX_Slip_Repair units String 1 source String ATLAS L1B ATBD, contentType String auxiliaryInformation description String If TRUE, attempt to repair any detected TXRX slip. cal_uso_scale 1 long_name String Calibration value for USO units String 1 source String ATLAS L1B ATBD contentType String auxiliaryInformation description String Calibration value for the Ultra Stable Oscillator (USO). Computed using the number of coarse clock ticks measurement generated by the USO between sequential 1PPS time stamps from the on-orbit GPS to estimate the coarse clock ruler scale factor. corr_rx_coarse_pce1 20 long_name String Correction value for PCE1 Rx coarse clock offset units String counts source String ATLAS L1B ATBD contentType String auxiliaryInformation description String Correction for the PCE1 Receive coarse clock offset. This corrects for the offset between the actual number of coarse clock cycles and the reported number of coarse clock cycles (for each channel). Default value is -1. cal_risefall_box_int 1 long_name String cal_risefall boxcar interval units String counts source String ATLAS L1B ATBD contentType String auxiliaryInformation description String Boxcar averaging interval for cal_risefall averaging, in major-frame counts. Boxcar averages are using to generate 1D spline coefficients. The spline coefficients are used to create smoothed, interpolated cal_risefall values at the full data rate. corr_tx_coarse_pce1 1 long_name String Correction value for PCE1 Tx coarse clock offset units String counts source String ATLAS L1B ATBD contentType String auxiliaryInformation description String Correction for the PCE1 Transmit coarse clock offset. This corrects for the offset between the actual number of coarse clock cycles and the reported number of coarse clock cycles. Default value is -1. Description String Contains ancillary parameters related to Time-of-Flight and/or Time-of-Day calculations. data_rate String Data within this group pertain to the granule in its entirety. atlas Description String Group contains the ATLAS EU-converted data data_rate String Data within this group are stored at the nominal rate of the corresponding ATLAS APIDs (varies per APID). housekeeping Description String Group contains the ATLAS EU-converted housekeeping data data_rate String Data within this group are stored at the nominal rate of the corresponding ATLAS APIDs (varies per APID). radiometry delta_time 423 delta_time /atlas/housekeeping/radiometry/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. The timestamp is computed based on the housekeeping design to sample laser near the asc 1pps internal pulse. (See the L1B ATBD section 5 Radiometric Corrections ) coordinates String delta_time bg_sensitivity_pce3_s /atlas/housekeeping/radiometry/delta_time long_name String PCE3 Strong background sensitivity units String events/s/Watt source String ATBD Section 5.5.2 contentType String referenceInformation description String PCE3, Strong spot - receiver response per watt of continuous illumination in the passband from a diffuse source larger than the field of view, in the absence of any dead time effects. coordinates String delta_time bg_sensitivity_pce1_s /atlas/housekeeping/radiometry/delta_time long_name String PCE1 Strong background sensitivity units String events/s/Watt source String ATBD Section 5.5.2 contentType String referenceInformation description String PCE1, Strong spot - receiver response per watt of continuous illumination in the passband from a diffuse source larger than the field of view, in the absence of any dead time effects. coordinates String delta_time ret_sensitivity_pce3_w /atlas/housekeeping/radiometry/delta_time long_name String PCE3 Weak return sensitivity units String events/s/Watt source String ATBD Section 5.5.3 contentType String referenceInformation description String PCE3, Weak spot - receiver response per joule/return pulse in the field of view, in the absence of any deadtime effects. coordinates String delta_time ret_sensitivity_pce3_s /atlas/housekeeping/radiometry/delta_time long_name String PCE3 Strong return sensitivity units String events/s/Watt source String ATBD Section 5.5.3 contentType String referenceInformation description String PCE3, Strong spot - receiver response per joule/return pulse in the field of view, in the absence of any deadtime effects. coordinates String delta_time ret_sensitivity_pce2_w /atlas/housekeeping/radiometry/delta_time long_name String PCE2 Weak return sensitivity units String events/s/Watt source String ATBD Section 5.5.3 contentType String referenceInformation description String PCE2, Weak spot - receiver response per joule/return pulse in the field of view, in the absence of any deadtime effects. coordinates String delta_time bg_sensitivity_pce2_w /atlas/housekeeping/radiometry/delta_time long_name String PCE2 Weak background sensitivity units String events/s/Watt source String ATBD Section 5.5.2 contentType String referenceInformation description String PCE2, Weak spot - receiver response per watt of continuous illumination in the passband from a diffuse source larger than the field of view, in the absence of any dead time effects. coordinates String delta_time bg_sensitivity_pce1_w /atlas/housekeeping/radiometry/delta_time long_name String PCE1 Weak background sensitivity units String events/s/Watt source String ATBD Section 5.5.2 contentType String referenceInformation description String PCE1, Weak spot - receiver response per watt of continuous illumination in the passband from a diffuse source larger than the field of view, in the absence of any dead time effects. coordinates String delta_time ret_sensitivity_pce1_s /atlas/housekeeping/radiometry/delta_time long_name String PCE1 Strong return sensitivity units String events/s/Watt source String ATBD Section 5.5.3 contentType String referenceInformation description String PCE1, Strong spot - receiver response per joule/return pulse in the field of view, in the absence of any deadtime effects. coordinates String delta_time bg_sensitivity_pce3_w /atlas/housekeeping/radiometry/delta_time long_name String PCE3 Weak background sensitivity units String events/s/Watt source String ATBD Section 5.5.2 contentType String referenceInformation description String PCE3, Weak spot - receiver response per watt of continuous illumination in the passband from a diffuse source larger than the field of view, in the absence of any dead time effects. coordinates String delta_time ret_sensitivity_pce1_w /atlas/housekeeping/radiometry/delta_time long_name String PCE1 Weak return sensitivity units String events/s/Watt source String ATBD Section 5.5.3 contentType String referenceInformation description String PCE1, Weak spot - receiver response per joule/return pulse in the field of view, in the absence of any deadtime effects. coordinates String delta_time bg_sensitivity_pce2_s /atlas/housekeeping/radiometry/delta_time long_name String PCE2 Strong background sensitivity units String events/s/Watt source String ATBD Section 5.5.2 contentType String referenceInformation description String PCE2, Strong spot - receiver response per watt of continuous illumination in the passband from a diffuse source larger than the field of view, in the absence of any dead time effects. coordinates String delta_time ret_sensitivity_pce2_s /atlas/housekeeping/radiometry/delta_time long_name String PCE2 Strong return sensitivity units String events/s/Watt source String ATBD Section 5.5.3 contentType String referenceInformation description String PCE2, Strong spot - receiver response per joule/return pulse in the field of view, in the absence of any deadtime effects. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String The radiometry group contains background and receiver sensitivity data_rate String Data within this group are stored at the data rate of one hertz. laser_energy_lrs delta_time 21150 delta_time /atlas/housekeeping/laser_energy_lrs/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. The timestamp is computed based on the housekeeping design to sample laser near the asc 1pps internal pulse. (See the L1B ATBD section 5 Radiometric Corrections ) e_tx_pce3_w /atlas/housekeeping/laser_energy_lrs/delta_time _FillValue Float32 3.402823466e+38 long_name String Spot laser energy for PCE3, weak units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE3 weak spot, derived from LRS laser centroids and split by calibration. coordinates String delta_time lrs_temp /atlas/housekeeping/laser_energy_lrs/delta_time units String degreesC _FillValue Float32 3.402823466e+38 long_name String Laser Temperature source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String LRS Temperature. From A_HKT_C Telemetry packet coordinates String delta_time e_tx_pce3_s /atlas/housekeeping/laser_energy_lrs/delta_time _FillValue Float32 3.402823466e+38 long_name String Spot laser energy for PCE3, strong units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE3 strong spot, derived from LRS laser centroids and split by calibration. coordinates String delta_time e_tx /atlas/housekeeping/laser_energy_lrs/delta_time _FillValue Float32 3.402823466e+38 long_name String total laser energy units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Total laser energy from derived from LRS laser centroid magnitudes. coordinates String delta_time e_tx_pce1_s /atlas/housekeeping/laser_energy_lrs/delta_time _FillValue Float32 3.402823466e+38 long_name String Spot laser energy for PCE1, strong units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE1 strong spot, derived from LRS laser centroids and split by calibration. coordinates String delta_time e_tx_pce2_w /atlas/housekeeping/laser_energy_lrs/delta_time _FillValue Float32 3.402823466e+38 long_name String Spot laser energy for PCE2, weak units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE2 weak spot, derived from LRS laser centroids and split by calibration. coordinates String delta_time e_tx_pce2_s /atlas/housekeeping/laser_energy_lrs/delta_time _FillValue Float32 3.402823466e+38 long_name String Spot laser energy for PCE2, strong units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE2 strong spot, derived from LRS laser centroids and split by calibration. coordinates String delta_time e_tx_pce1_w /atlas/housekeeping/laser_energy_lrs/delta_time _FillValue Float32 3.402823466e+38 long_name String Spot laser energy for PCE1, weak units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE1 weak spot, derived from LRS laser centroids and split by calibration. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Laser energy derived from LRS Centroid Magnitudes. Packet Frequency is 50 Hertz. data_rate String Data within this group are provided at the packet rate of 50hz. laser_energy_spd delta_time 423 ds_10 10 delta_time /atlas/housekeeping/laser_energy_spd/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. The timestamp is computed based on the housekeeping design to sample laser near the asc 1pps internal pulse. (See the L1B ATBD section 5 Radiometric Corrections ) ds_10 /atlas/housekeeping/laser_energy_spd/ds_10 long_name String DS for 10 measurements units String 1 source String ATLAS valid_min Int8 1 valid_max Int8 10 contentType String referenceInformation description String Dimension scale for10 measurements. edge_xmtnc /atlas/housekeeping/laser_energy_spd/delta_time long_name String SPD Edge units String mV source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String edge_xmtnc. From Analog HK Telemetry packet E (APID 1063). coordinates String delta_time e_tx_pce3_s /atlas/housekeeping/laser_energy_spd/delta_time /atlas/housekeeping/laser_energy_spd/ds_10 units String joules long_name String Spot laser energy for PCE3, strong source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE3 strong spot, derived from the analog HK telemetry and split by calibration. coordinates String delta_time e_tx /atlas/housekeeping/laser_energy_spd/delta_time /atlas/housekeeping/laser_energy_spd/ds_10 long_name String total laser energy units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Total laser energy from Analog HK Telemetry packet E (APID 1063). coordinates String delta_time laser_temp /atlas/housekeeping/laser_energy_spd/delta_time long_name String Laser Temperature units String degreesC source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser Temperature. From A_HKT_C PRIMARY SPD THERMISTOR MED_34 chan[74] or REDUNDANT SPD THERMISTOR MED_35 chan[81] coordinates String delta_time e_tx_pce1_s /atlas/housekeeping/laser_energy_spd/delta_time /atlas/housekeeping/laser_energy_spd/ds_10 units String joules long_name String Spot laser energy for PCE1, strong source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE1 strong spot, derived from the analog HK telemetry and split by calibration. coordinates String delta_time peak_xmtnc /atlas/housekeeping/laser_energy_spd/delta_time long_name String SPD Peak units String mV source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String peak_xmtnc. From Analog HK Telemetry packet E (APID 1063). coordinates String delta_time e_tx_pce2_w /atlas/housekeeping/laser_energy_spd/delta_time /atlas/housekeeping/laser_energy_spd/ds_10 units String joules long_name String Spot laser energy for PCE2, weak source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE2 weak spot, derived from the analog HK telemetry and split by calibration. coordinates String delta_time thrlo_rdbk /atlas/housekeeping/laser_energy_spd/delta_time long_name String SPD Lower Thres units String volts source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Start Pulse Detector (SPD) lower threshold readback value. Reported as an analog voltage whose nominal setting puts the threshold at 20% of full laser energy. From Analog HK Telemetry packet E (APID 1063). coordinates String delta_time e_tx_pce2_s /atlas/housekeeping/laser_energy_spd/delta_time /atlas/housekeeping/laser_energy_spd/ds_10 units String joules long_name String Spot laser energy for PCE2, strong source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE2 strong spot, derived from the analog HK telemetry and split by calibration. coordinates String delta_time thrhi_rdbk /atlas/housekeeping/laser_energy_spd/delta_time long_name String SPD Upper Thres units String volts source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Start Pulse Detector (SPD) upper threshold readback value. Reported as an analog voltage whose nominal setting puts the threshold at 80% of full laser energy. From Analog HK Telemetry packet E (APID 1063). coordinates String delta_time e_tx_pce1_w /atlas/housekeeping/laser_energy_spd/delta_time /atlas/housekeeping/laser_energy_spd/ds_10 units String joules long_name String Spot laser energy for PCE1, weak source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE1 weak spot derived from the analog HK telemetry and split by calibration. coordinates String delta_time e_tx_pce3_w /atlas/housekeeping/laser_energy_spd/delta_time /atlas/housekeeping/laser_energy_spd/ds_10 units String joules long_name String Spot laser energy for PCE3, weak source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE3 weak spot, derived from the analog HK telemetry and split by calibration. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_10 Description String Laser energy from APID 1063 Analog HK Telemetry. Packet Frequency is 1 Hertz. data_rate String Data within this group are provided at the packet rate of 1hz. pointing delta_time 423 delta_time /atlas/housekeeping/pointing/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. q_sc_i2b_2 /atlas/housekeeping/pointing/delta_time long_name String q_sc_i2b_2 units String 1 source String ATL01/atlas/a_sc_pon_1138 valid_min Float64 -1. valid_max Float64 1. contentType String referenceInformation description String SC Inertial to ATLAS Body Frame quaternion 2 coordinates String delta_time x_sc_body_rate /atlas/housekeeping/pointing/delta_time long_name String x_sc_body_rate units String radians/second source String ATL01/atlas/a_sc_pon_1138 contentType String referenceInformation description String SC body rate as measured about the X axis in the ATLAS frame coordinates String delta_time y_sc_body_rate /atlas/housekeeping/pointing/delta_time long_name String y_sc_body_rate source String ATL01/atlas/a_sc_pon_1138 contentType String referenceInformation description String SC body rate as measured about the Y axis in the ATLAS frame coordinates String delta_time units String radians/second sc_solution_sec /atlas/housekeeping/pointing/delta_time long_name String sc_solution_sec units String seconds source String ATL01/atlas/a_sc_pon_1138 contentType String referenceInformation description String Recorded time of the pointing solution in seconds from the spacecraft epoch coordinates String delta_time sc_solution_subsec /atlas/housekeeping/pointing/delta_time long_name String sc_solution_subsec units String subseconds source String ATL01/atlas/a_sc_pon_1138 contentType String referenceInformation description String Spacecraft recorded time counts - 24 bits, 100 ns per count coordinates String delta_time z_sc_body_rate /atlas/housekeeping/pointing/delta_time long_name String z_sc_body_rate units String radians/second source String ATL01/atlas/a_sc_pon_1138 contentType String referenceInformation description String SC body rate as measured about the Z axis in the ATLAS frame coordinates String delta_time q_sc_i2b_3 /atlas/housekeeping/pointing/delta_time long_name String q_sc_i2b_3 units String 1 source String ATL01/atlas/a_sc_pon_1138 valid_min Float64 -1. valid_max Float64 1. contentType String referenceInformation description String SC Inertial to ATLAS Body Frame quaternion 3 coordinates String delta_time q_sc_i2b_4 /atlas/housekeeping/pointing/delta_time long_name String q_sc_i2b_4 units String 1 source String ATL01/atlas/a_sc_pon_1138 valid_min Float64 -1. valid_max Float64 1. contentType String referenceInformation description String SC Inertial to ATLAS Body Frame quaternion 4 coordinates String delta_time q_sc_i2b_1 /atlas/housekeeping/pointing/delta_time long_name String q_sc_i2b_1 units String 1 source String ATL01/atlas/a_sc_pon_1138 valid_min Float64 -1. valid_max Float64 1. contentType String referenceInformation description String SC Inertial to ATLAS Body Frame quaternion 1 coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String APID 1138 ATLAS Pointing Message- Spacecraft Attitude and Rates Packet - Relayed to SSR. Packet Frequency is by command. data_rate String Data within this group are stored at the data rate of the source APIDs. (only downlinked on command). thermal delta_time 423 delta_time /atlas/housekeeping/thermal/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. This is computed based on the housekeeping design to sample a measurement every 0.003125 seconds from the internal ASC 1PPS . The time for this packet is set as the time of the lowest channel number in this telemetry packet.. If the specific time is needed use the channel number from the lowest channel in packet. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. hkt_ofa6_pri_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA6 PRI T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-43 OFA6 PRI T - A_HKT_C.chan[24] coordinates String delta_time hkt_ob_pz2_t /atlas/housekeeping/thermal/delta_time long_name String HKT OB PZ2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Optical Bench, +Z Side T TCS-27 A_HKT_C.chan[64] coordinates String delta_time hkt_dom_rad2_t /atlas/housekeeping/thermal/delta_time long_name String HKT DOM RAD2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT DAA DOM Radiator T (Red) TCS-48 - A_HKT_C.chan[34] coordinates String delta_time hkt_meb_mce2_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB MCE2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB MCE2 T MEB-08 - A_HKT_C.chan[6] coordinates String delta_time hkt_ofa5_red_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA5 RED T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-42 OFA5 RED T - A_HKT_C.chan[30] coordinates String delta_time hkt_meb_pce3_2_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB PCE3 2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB PCE3 2 T MEB-16 - A_HKT_C.chan[14] coordinates String delta_time hkt_ob_mz2_t /atlas/housekeeping/thermal/delta_time long_name String HKT OB MZ2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Optical Bench, -Z Side T TCS-24 A_HKT_C.chan[66] coordinates String delta_time hkt_tel_pri1_t /atlas/housekeeping/thermal/delta_time long_name String HKT TEL PRI1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Telescope, Primary Mirror T (Pri) TCS-05 A_HKT_C.chan[95] coordinates String delta_time hkt_dem1_t2_it_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM1_T2_IT_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 76 - DEM1_TH_D-MEB-39 Internal Top T A_HKT_C.chan[40] coordinates String delta_time hkt_ob_pz4_t /atlas/housekeeping/thermal/delta_time long_name String HKT_OB_PZ4_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Optical Bench +z4 T TCS_32 A_HKT_C.chan[105] coordinates String delta_time hkt_struc_my_t /atlas/housekeeping/thermal/delta_time long_name String HKT STRUC MY T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Structure Y Panel T TCS_55 A_HKT_C.chan[91] coordinates String delta_time hkt_lhp_evap_t /atlas/housekeeping/thermal/delta_time long_name String HKT LHP EVAP T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String LHP Evaporator T TCS-15 A_HKT_C.chan[54] coordinates String delta_time hkt_dem6_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM6_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 87 - DEM6_TH_A-MEB-50 External Bottom T A_HKT_C.chan[51] coordinates String delta_time hkt_meb_pce1_2_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB PCE1 2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB PCE1 2 T MEB-12 - A_HKT_C.chan[10] coordinates String delta_time hkt_scif_myflex_t /atlas/housekeeping/thermal/delta_time long_name String HKT SCIF MYFLEX T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String -Y S/C Flexure T A_HKT_C.chan[93] coordinates String delta_time pdub_therm_ct_t /atlas/housekeeping/thermal/delta_time long_name String PDUB THERM CT T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PDU CT BOARD B T -MEB-25 A_HKT_C.chan[77] coordinates String delta_time hkt_ofa2_pri_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA2 PRI T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-35 OFA2 PRI T - A_HKT_C.chan[20] coordinates String delta_time spdb_therm_t /atlas/housekeeping/thermal/delta_time long_name String SPDB THERM T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String REDUNDANT SPD THERMISTOR MEB-35 A_HKT_C.chan[81] coordinates String delta_time hkt_lrs_orad1_t /atlas/housekeeping/thermal/delta_time long_name String HKT LRS ORAD1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String LRS Optics RadiatorT (Pri) TCS-08 A_HKT_C.chan[56] coordinates String delta_time hkt_dem4_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM4_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 82 - DEM4_TH_A-MEB-45 External Bottom T A_HKT_C.chan[46] coordinates String delta_time hkt_dem5_t4_et_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM5_T4_ET_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 83 - DEM5_TH_A-MEB-46 External Top T A_HKT_C.chan[47] coordinates String delta_time hkt_meb_pce2_2_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB PCE2 2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB PCE2 2 T MEB-14 - A_HKT_C.chan[12] coordinates String delta_time hkt_lhp_res1_t /atlas/housekeeping/thermal/delta_time long_name String HKT LHP RES1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String LHP Compensation Chamber T (Pri) TCS-10 A_HKT_C.chan[52] coordinates String delta_time hkt_tel_sec1_t /atlas/housekeeping/thermal/delta_time long_name String HKT TEL SEC1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Telescope, Secondary Mirror T (Pri) TCS-01 A_HKT_C.chan[97] coordinates String delta_time hkt_dem3_t4_et_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM3_T4_ET_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 78 - DEM3_TH_A-MEB-41 External Top T A_HKT_C.chan[42] coordinates String delta_time hkt_meb_hkt_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB HKT T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB HKT T MEB-21 - A_HKT_C.chan[2] coordinates String delta_time hkt_dem3_t1_eb_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM3_T1_EB_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 79 - DEM3_TH_B-MEB-42 External Bottom T A_HKT_C.chan[43] coordinates String delta_time hkt_ofa2_red_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA2 RED T source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-36 OFA2 RED T - A_HKT_C.chan[27] coordinates String delta_time units String degreesC hkt_meb_pce1_1_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB PCE1 1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB PCE1 1 T MEB-11 - A_HKT_C.chan[9] coordinates String delta_time hkt_cchp_adiab_t /atlas/housekeeping/thermal/delta_time long_name String HKT CCHP ADIAB T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Laser CCHP Adiabatic Section T TCS-12 A_HKT_C.chan[55] coordinates String delta_time hkt_ob_pz3_t /atlas/housekeeping/thermal/delta_time long_name String HKT_OB_PZ3_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Optical Bench +z3 T TCS_31 A_HKT_C.chan[103] coordinates String delta_time hkt_ofa4_red_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA4 RED T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-40 OFA4 RED T - A_HKT_C.chan[29] coordinates String delta_time hkt_lrs_orad2_t /atlas/housekeeping/thermal/delta_time long_name String HKT LRS ORAD2 T source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String LRS Optics Radiator T (Red) TCS-09 A_HKT_C.chan[57] coordinates String delta_time units String degreesC hkt_ofa1_red_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA1 RED T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-34 OFA1 RED T - A_HKT_C.chan[26] coordinates String delta_time hkt_ofa1_et_t /atlas/housekeeping/thermal/delta_time long_name String HKT_OFA1_ET_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String OFA1 ETALON T TCS_58 A_HKT_C.chan[104] coordinates String delta_time hkt_ofa4_pri_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA4 PRI T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-39 OFA4 PRI T - A_HKT_C.chan[22] coordinates String delta_time hvpca_therm_a_t /atlas/housekeeping/thermal/delta_time long_name String HVPCTHERM T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PRIMARY HVPC THERMISTOR A MEB-30 A_HKT_C.chan[68] coordinates String delta_time hkt_imsc_mzflex_t /atlas/housekeeping/thermal/delta_time long_name String HKT IMSC MZFLEX T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String IMSC Flexure 2 T TCS-29 A_HKT_C.chan[89] coordinates String delta_time hkt_lhp_res2_t /atlas/housekeeping/thermal/delta_time long_name String HKT LHP RES2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String LHP Compensation Chamber T (Red) TCS-11 A_HKT_C.chan[53] coordinates String delta_time hkt_dem2_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM2_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 77 - DEM2_TH_A-MEB-40 External Bottom T A_HKT_C.chan[41] coordinates String delta_time hkt_scif_pxflex_t /atlas/housekeeping/thermal/delta_time long_name String HKT SCIF PXFLEX T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String +X S/C Flexure T TCS-51 A_HKT_C.chan[87] coordinates String delta_time hkt_dem5_t1_eb_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM5_T1_EB_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 84 - DEM5_TH_B-MEB-47 External Bottom T A_HKT_C.chan[48] coordinates String delta_time pdua_therm_ct_t /atlas/housekeeping/thermal/delta_time long_name String PDUTHERM CT T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PDU CT BOARD A T-MEB-24 A_HKT_C.chan[70] coordinates String delta_time hkt_ofa7_red_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA7 RED T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-46 OFA7 RED T - A_HKT_C.chan[32] coordinates String delta_time hkt_meb_asc2_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB ASC2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB ASC2 T MEB-02 - A_HKT_C.chan[1] coordinates String delta_time hkt_ltr_trans_t /atlas/housekeeping/thermal/delta_time long_name String HKT LTR TRANS T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Transmitter LTR T TCS_19 A_HKT_C.chan[102] coordinates String delta_time pdua_therm_dlv_b_t /atlas/housekeeping/thermal/delta_time long_name String PDUTHERM DLV B T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PDU LOW VOLTAGE 2A T -MEB-28 A_HKT_C.chan[72] coordinates String delta_time hkt_foldm_t /atlas/housekeeping/thermal/delta_time long_name String HKT FOLDM T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Fold Mirror I/F I TCS-22 A_HKT_C.chan[83] coordinates String delta_time pdub_therm_dlv_b_t /atlas/housekeeping/thermal/delta_time long_name String PDUB THERM DLV B T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PDU LOW VOLTAGE 2B T -MEB-29 A_HKT_C.chan[79] coordinates String delta_time hkt_dem1_t3_ib_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM1_T3_IB_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 75 - DEM1_TH_C-MEB-38 Internal Bottom T A_HKT_C.chan[39] coordinates String delta_time hkt_lrs_ss_t /atlas/housekeeping/thermal/delta_time long_name String HKT LRS SS T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String LRS Sunshade I/F T TCS-13 A_HKT_C.chan[58] coordinates String delta_time hkt_meb_lvpc1_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB LVPC1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB LVPC1 T MEB-03 - A_HKT_C.chan[3] coordinates String delta_time hkt_imsc_myflex_t /atlas/housekeeping/thermal/delta_time long_name String HKT IMSC MYFLEX T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String IMSC Flexure 1 T TCS-28 A_HKT_C.chan[88] coordinates String delta_time hkt_meb_sbc1_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB SBC1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB SBC1 T MEB-17 - A_HKT_C.chan[15] coordinates String delta_time hkt_ofa7_pri_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA7 PRI T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-45 OFA7 PRI T - A_HKT_C.chan[25] coordinates String delta_time hkt_meb_mce1_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB MCE1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB MCE1 T MEB-07 - A_HKT_C.chan[5] coordinates String delta_time hkt_struc_mz_t /atlas/housekeeping/thermal/delta_time long_name String HKT STRUC MZ T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Structure Z Panel T TCS_57 A_HKT_C.chan[92] coordinates String delta_time hkt_bsm_t /atlas/housekeeping/thermal/delta_time long_name String HKT BSM T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT BSM I/F T TCS-20 - A_HKT_C.chan[33] coordinates String delta_time hvpcb_therm_a_t /atlas/housekeeping/thermal/delta_time long_name String HVPCB THERM T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String REDUNDANT HVPC THERMISTOR A MEB-31 A_HKT_C.chan[75] coordinates String delta_time hkt_ofa3_red_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA3 RED T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-38 OFA3 RED T - A_HKT_C.chan[28] coordinates String delta_time hkt_meb_pce3_1_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB PCE3 1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB PCE3 1 T MEB-15 - A_HKT_C.chan[13] coordinates String delta_time hkt_dem5_t3_ib_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM5_T3_IB_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 85 - DEM5_TH_C-MEB-48 Internal Bottom T A_HKT_C.chan[49] coordinates String delta_time hkt_tel_pri2_t /atlas/housekeeping/thermal/delta_time long_name String HKT TEL PRI2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Telescope, Primary Mirror T (Red) TCS-06 A_HKT_C.chan[96] coordinates String delta_time hkt_tel_tow1_t /atlas/housekeeping/thermal/delta_time long_name String HKT TEL TOW1 T source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Telescope, Tower T (Pri) TCS-03 A_HKT_C.chan[99] coordinates String delta_time units String degreesC hkt_ofa1_pri_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA1 PRI T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-33 OFA1 PRI T - A_HKT_C.chan[19] coordinates String delta_time hvpcb_therm_b_t /atlas/housekeeping/thermal/delta_time long_name String HVPCB THERM B T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String REDUNDANT HVPC THERMISTOR B MEB-33 A_HKT_C.chan[76] coordinates String delta_time hkt_dem1_t1_eb_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM1_T1_EB_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 74 - DEM1_TH_B-MEB-37 External Bottom t A_HKT_C.chan[38] coordinates String delta_time pdua_therm_mi_t /atlas/housekeeping/thermal/delta_time long_name String PDUTHERM MI T source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PDU MAIN PWR BOARD A T-MEB_22 A_HKT_C.chan[73] coordinates String delta_time units String degreesC hkt_ltr_tams_t /atlas/housekeeping/thermal/delta_time long_name String HKT LTR TAMS T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String TAMS LTR T TCS-18 A_HKT_C.chan[94] coordinates String delta_time hkt_meb_pce2_1_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB PCE2 1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB PCE2 1 T MEB-13 - A_HKT_C.chan[11] coordinates String delta_time pdua_therm_dlv_a_t /atlas/housekeeping/thermal/delta_time long_name String PDUTHERM DLV T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PDU LOW VOLTAGE 1A T-MEB-26 A_HKT_C.chan[71] coordinates String delta_time hkt_ofa3_pri_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA3 PRI T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-37 OFA3 PRI T - A_HKT_C.chan[21] coordinates String delta_time hkt_meb_sbc2_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB SBC2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB SBC2 T MEB-18 - A_HKT_C.chan[16] coordinates String delta_time hkt_cchp_las1_t /atlas/housekeeping/thermal/delta_time long_name String HKT CCHP LAS1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Laser 1 I/F T TCS-14 A_HKT_C.chan[59] coordinates String delta_time hvpca_therm_b_t /atlas/housekeeping/thermal/delta_time long_name String HVPCTHERM B T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PRIMARY HVPC THERMISTOR B MEB-32 A_HKT_C.chan[69] coordinates String delta_time hkt_scif_pyflex_t /atlas/housekeeping/thermal/delta_time long_name String HKT SCIF PYFLEX T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String -+Y S/C Flexure T TCS-53 A_HKT_C.chan[101] coordinates String delta_time hkt_ob_mz3_t /atlas/housekeeping/thermal/delta_time long_name String HKT OB MZ3 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Optical Bench, -Z Side T TCS-25 A_HKT_C.chan[67] coordinates String delta_time hkt_a_beam_px_t /atlas/housekeeping/thermal/delta_time long_name String HKT_BEAMX_PX_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String A_HKT_BEAMX_PX_T A_HKT_C.chan[62] coordinates String delta_time hkt_meb_mce3_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB MCE3 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB MCE3 T MEB-09 - A_HKT_C.chan[7] coordinates String delta_time spda_therm_t /atlas/housekeeping/thermal/delta_time long_name String SPDTHERM T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PRIMARY SPD THERMISTOR MEB-34 A_HKT_C.chan[74] coordinates String delta_time hkt_meb_mce4_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB MCE4 T source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB MCE4 T MEB-10 - A_HKT_C.chan[8] coordinates String delta_time units String degreesC pdub_therm_dlv_a_t /atlas/housekeeping/thermal/delta_time long_name String PDUB THERM DLV T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PDU LOW VOLTAGE 1B T -MEB-27 A_HKT_C.chan[78] coordinates String delta_time hkt_dem1_t4_et_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM1_T4_ET_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 73 - DEM1_TH_A-MEB-36 External Top T A_HKT_C.chan[37] coordinates String delta_time hkt_tel_pri3_t /atlas/housekeeping/thermal/delta_time long_name String HKT TEL PRI3 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT Telescope, Primary Mirror T TCS-07 - A_HKT_C.chan[35] coordinates String delta_time hkt_dom_rad1_t /atlas/housekeeping/thermal/delta_time long_name String HKT DOM RAD1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT DAA DOM Radiator T (Pri) TCS-47 - A_HKT_C.chan[36] coordinates String delta_time hkt_beamx_t /atlas/housekeeping/thermal/delta_time long_name String HKT BEAMX T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Beam Expander I/F mTTCS-21 or 30 A_HKT_C.chan[82] coordinates String delta_time hkt_lhp_vapline_t /atlas/housekeeping/thermal/delta_time long_name String HKT LHP VAPLINE T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String A_HKT_LHP_VAPLINE_T TCS-17 A_HKT_C.chan[90] coordinates String delta_time hkt_dem3_t3_ib_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM3_T3_IB_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 80 - DEM3_TH_C-MEB-43 Internal Bottom T A_HKT_C.chan[44] coordinates String delta_time hkt_ofa6_red_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA6 RED T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-44 OFA6 RED T - A_HKT_C.chan[31] coordinates String delta_time hkt_lasrad_t /atlas/housekeeping/thermal/delta_time long_name String HKT LASRAD T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Laser LHP Radiator T TCS_54 A_HKT_C.chan[61] coordinates String delta_time hkt_spd_t /atlas/housekeeping/thermal/delta_time long_name String HKT SPD T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String SPD I/F T TCS-50 A_HKT_C.chan[85] coordinates String delta_time hkt_tel_sec2_t /atlas/housekeeping/thermal/delta_time long_name String HKT TEL SEC2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Telescope, Secondary Mirror T (Red) TCS-02 A_HKT_C.chan[98] coordinates String delta_time hkt_ob_mz1_t /atlas/housekeeping/thermal/delta_time long_name String HKT OB MZ1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Optical Bench, -Z Side T TCS-23 A_HKT_C.chan[65] coordinates String delta_time hkt_ofa7_et_t /atlas/housekeeping/thermal/delta_time long_name String HKT_OFA7_ET_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String OFA7 ETALON T TCS_59 A_HKT_C.chan[106] coordinates String delta_time hkt_tel_tow2_t /atlas/housekeeping/thermal/delta_time long_name String HKT TEL TOW2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Telescope, Tower T (Red) TCS-04 A_HKT_C.chan[100] coordinates String delta_time hkt_lhp_liqline_t /atlas/housekeeping/thermal/delta_time long_name String HKT LHP LIQLINE T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String LHP Liquid Line T TCS-16 A_HKT_C.chan[60] coordinates String delta_time hkt_meb_lvpc2_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB LVPC2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB LVPC2 T MEB-04 - A_HKT_C.chan[4] coordinates String delta_time hkt_sunshade_t /atlas/housekeeping/thermal/delta_time long_name String HKT_SUNSHADE_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Structure +Z Panel T A_HKT_C.chan[86] coordinates String delta_time hkt_meb_asc1_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB ASC1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB ASC1 T MEB-01F - A_HKT_C.chan[0] coordinates String delta_time hkt_wtem_t /atlas/housekeeping/thermal/delta_time long_name String HKT WTEM T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String OFA WTEM I/F T TCS-49 A_HKT_C.chan[84] coordinates String delta_time hkt_dem5_t2_it_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM5_T2_IT_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 86 - DEM5_TH_D-MEB-49 Internal Top T A_HKT_C.chan[50] coordinates String delta_time hkt_meb_uso2_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB USO2 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB USO2 T MEB-20 - A_HKT_C.chan[18] coordinates String delta_time hkt_dem3_t2_it_t /atlas/housekeeping/thermal/delta_time long_name String HKT_DEM3_T2_IT_T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT A/D Ch 81 - DEM3_TH_D-MEB-44 Internal Top T A_HKT_C.chan[45] coordinates String delta_time hkt_ob_pz1_t /atlas/housekeeping/thermal/delta_time long_name String HKT OB PZ1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String Optical Bench, +Z Side T TCS-26 A_HKT_C.chan[63] coordinates String delta_time hkt_meb_uso1_t /atlas/housekeeping/thermal/delta_time long_name String HKT MEB USO1 T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT MEB USO1 T MEB-19 - A_HKT_C.chan[17] coordinates String delta_time pdub_therm_mi_t /atlas/housekeeping/thermal/delta_time long_name String PDUB THERM MI T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String PDU MAIN PWR BOARD B T -MEB_23 A_HKT_C.chan[80] coordinates String delta_time hkt_ofa5_pri_t /atlas/housekeeping/thermal/delta_time long_name String HKT OFA5 PRI T units String degreesC source String ATL01/atlas/a_hkt_c_1061 converted contentType String referenceInformation description String HKT TCS-41 OFA5 PRI T - A_HKT_C.chan[23] coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Thermal data from APID 1061 Analog HK Telemetry. Packet Frequency is 1 in Hertz. data_rate String Data within this group are stored at the data rate of the source APID. (Nominally 1HZ). laser_energy_internal delta_time 423 delta_time /atlas/housekeeping/laser_energy_internal/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. The timestamp is computed based on the housekeeping design to sample laser near the asc 1pps internal pulse. (See the L1B ATBD section 5 Radiometric Corrections ) e_tx_pce3_w /atlas/housekeeping/laser_energy_internal/delta_time long_name String Spot laser energy for PCE3, weak units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE3 weak spot, derived from the internal laser energy monitor and split by calibration. coordinates String delta_time laser_mode /atlas/housekeeping/laser_energy_internal/delta_time long_name String Laser Mode Setting units String 1 source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser Mode setting reported in A_SLA_HK (APID 1032). coordinates String delta_time e_tx_pce3_s /atlas/housekeeping/laser_energy_internal/delta_time long_name String Spot laser energy for PCE3, strong units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE3 strong spot, derived from the internal laser energy monitor and split by calibration. coordinates String delta_time e_tx /atlas/housekeeping/laser_energy_internal/delta_time long_name String total laser energy units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Total laser energy derived from the internal laser energy monitor (APID 1032). coordinates String delta_time laser_temp /atlas/housekeeping/laser_energy_internal/delta_time long_name String Laser Temperature units String degreesC source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser Temperature. From SLA_HK Telemetry packet (APID 1032, Laser Cmd Code 0xFE LAS-14, raw_lem_temp). coordinates String delta_time e_tx_pce1_s /atlas/housekeeping/laser_energy_internal/delta_time long_name String Spot laser energy for PCE1, strong units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE1 strong spot, derived from the internal laser energy monitor and split by calibration. coordinates String delta_time e_tx_pce2_w /atlas/housekeeping/laser_energy_internal/delta_time long_name String Spot laser energy for PCE2, weak units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE2 weak spot, derived from the internal laser energy monitor and split by calibration. coordinates String delta_time e_tx_pce2_s /atlas/housekeeping/laser_energy_internal/delta_time long_name String Spot laser energy for PCE2, strong units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE2 strong spot, derived from the internal laser energy monitor and split by calibration. coordinates String delta_time e_tx_pce1_w /atlas/housekeeping/laser_energy_internal/delta_time long_name String Spot laser energy for PCE1, weak units String joules source String ICESat-2 L1B ATBD, Section 5.2, Transmitted Energy contentType String referenceInformation description String Laser energy for the PCE1 weak spot, derived from the internal laser energy monitor and split by calibration. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Internal laser energy from APID 1032 SLA_HK. Packet Frequency is 1 Hertz. data_rate String Data within this group are provided at the packet rate of 1hz. meb delta_time 423 delta_time /atlas/housekeeping/meb/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. hkt_meb_p5d_mon_v /atlas/housekeeping/meb/delta_time long_name String +5D Monitor units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String +5D Monitor - A_HKT_D.chan[7] coordinates String delta_time hkt_meb_p15v_mon_v /atlas/housekeeping/meb/delta_time long_name String +15V Monitor units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String +15V Monitor - A_HKT_D.chan[9] coordinates String delta_time hkt_meb_2p5v_pce3_v /atlas/housekeeping/meb/delta_time long_name String 2P5VTLM-PCE3 units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 2P5VTLM-PCE3 - A_HKT_D.chan[27] coordinates String delta_time hkt_meb_3p3v_mon_v /atlas/housekeeping/meb/delta_time long_name String 3.3V Monitor units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 3.3V Monitor - A_HKT_D.chan[6] coordinates String delta_time hkt_meb_5p0v_sbc_v /atlas/housekeeping/meb/delta_time long_name String 5P0V_SBC_TLM units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 5P0V_SBC_TLM - A_HKT_D.chan[29] coordinates String delta_time hkt_meb_1p5v_mon_v /atlas/housekeeping/meb/delta_time long_name String HKT 1.5V Monitor units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String HKT 1.5V Monitor - A_HKT_D.chan[5] coordinates String delta_time hkt_meb_i_uso_i /atlas/housekeeping/meb/delta_time long_name String ITLM-USO units String amps source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String ITLM-USO - A_HKT_D.chan[15] coordinates String delta_time hkt_meb_2p5v_pce2_v /atlas/housekeeping/meb/delta_time long_name String 2P5VTLM-PCE2 units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 2P5VTLM-PCE2 - A_HKT_D.chan[26] coordinates String delta_time hkt_meb_1p5v_asc_v /atlas/housekeeping/meb/delta_time long_name String 1P5VTLM-ASC units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 1P5VTLM-ASC - A_HKT_D.chan[22] coordinates String delta_time hkt_meb_1p5vb_pce3_v /atlas/housekeeping/meb/delta_time long_name String 1P5VBTLM-PCE3 units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 1P5VBTLM-PCE3 - A_HKT_D.chan[18] coordinates String delta_time hkt_meb_3p3i_lvpc_i /atlas/housekeeping/meb/delta_time long_name String 3P3ITLM-LVPC units String amps source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 3P3ITLM-LVPC - A_HKT_D.chan[12] coordinates String delta_time hkt_meb_1p5va_pce1_v /atlas/housekeeping/meb/delta_time long_name String 1P5VATLM-PCE1 units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 1P5VATLM-PCE1 - A_HKT_D.chan[23] coordinates String delta_time hkt_meb_5p0i_sbc_i /atlas/housekeeping/meb/delta_time long_name String 5P0I_SBC_TLM units String amps source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 5P0I_SBC_TLM - A_HKT_D.chan[28] coordinates String delta_time hkt_meb_n15p0i_lvpc_i /atlas/housekeeping/meb/delta_time long_name String 15P0I_NEG_TLM-LVPC units String amps source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 15P0I_NEG_TLM-LVPC - A_HKT_D.chan[21] coordinates String delta_time hkt_meb_n5a_mon_v /atlas/housekeeping/meb/delta_time long_name String HKT -5A Monitor units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String HKT -5A Monitor - A_HKT_D.chan[11] coordinates String delta_time hkt_meb_cal_p65p3_t /atlas/housekeeping/meb/delta_time long_name String CAL +65.3 units String degreesC source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String CAL +65.3 - A_HKT_D.chan[0] coordinates String delta_time hkt_meb_1p5va_pce2_v /atlas/housekeeping/meb/delta_time long_name String 1P5VATLM-PCE2 units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 1P5VATLM-PCE2 - A_HKT_D.chan[16] coordinates String delta_time hkt_meb_cal_n35p9_t /atlas/housekeeping/meb/delta_time long_name String CAL -35.9 units String degreesC source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String CAL -35.9 - A_HKT_D.chan[3] coordinates String delta_time hkt_meb_cal_p25_t /atlas/housekeeping/meb/delta_time long_name String CAL +25 units String degreesC source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String CAL +25 - A_HKT_D.chan[1] coordinates String delta_time hkt_meb_2p5v_pce1_v /atlas/housekeeping/meb/delta_time long_name String 2P5VTLM-PCE1 units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 2P5VTLM-PCE1 - A_HKT_D.chan[19] coordinates String delta_time hkt_meb_n15v_mon_v /atlas/housekeeping/meb/delta_time long_name String -15V Monitor units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String -15V Monitor - A_HKT_D.chan[10] coordinates String delta_time hkt_meb_1p5va_pce3_v /atlas/housekeeping/meb/delta_time long_name String 1P5VATLM-PCE3 units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 1P5VATLM-PCE3 - A_HKT_D.chan[17] coordinates String delta_time hkt_meb_p15p0i_lvpc_i /atlas/housekeeping/meb/delta_time long_name String 15P0I_POS_TLM-LVPC units String amps source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 15P0I_POS_TLM-LVPC - A_HKT_D.chan[20] coordinates String delta_time hkt_ground_check /atlas/housekeeping/meb/delta_time long_name String Ground check units String counts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String Ground check - A_HKT_D.chan[30] coordinates String delta_time hkt_meb_v_uso_v /atlas/housekeeping/meb/delta_time long_name String VTLM-USO units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String VTLM-USO - A_HKT_D.chan[14] coordinates String delta_time hkt_meb_cal_n62p5_t /atlas/housekeeping/meb/delta_time long_name String CAL -62.5 units String degreesC source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String CAL -62.5 - A_HKT_D.chan[4] coordinates String delta_time hkt_meb_5p0i_lvpc_i /atlas/housekeeping/meb/delta_time long_name String 5P0ITLM-LVPC units String amps source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 5P0ITLM-LVPC - A_HKT_D.chan[13] coordinates String delta_time hkt_meb_p5a_mon_v /atlas/housekeeping/meb/delta_time long_name String HKT +5A Monitor units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String HKT +5A Monitor - A_HKT_D.chan[8] coordinates String delta_time hkt_meb_cal_n6p6_t /atlas/housekeeping/meb/delta_time long_name String CAL -6.6 units String degreesC source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String CAL -6.6 - A_HKT_D.chan[2] coordinates String delta_time hkt_meb_1p5vb_pce2_v /atlas/housekeeping/meb/delta_time long_name String 1P5VBTLM-PCE2 source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 1P5VBTLM-PCE2 - A_HKT_D.chan[25] coordinates String delta_time units String volts hkt_meb_1p5vb_pce1_v /atlas/housekeeping/meb/delta_time long_name String 1P5VBTLM-PCE1 units String volts source String ATL01/atlas/a_hkt_d_1062 converted contentType String referenceInformation description String 1P5VBTLM-PCE1 - A_HKT_D.chan[24] coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Data from APID 1062 Analog HK Telemetry. Packet Frequency is 1 in Hertz. Voltage and current data data_rate String Data within this group are stored at the data rate of the source APID. (Nominally 1HZ). pdu delta_time 423 delta_time /atlas/housekeeping/pdu/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP GPS Epoch. This is computed based on the housekeeping design to sample a measurement every 0.003125 seconds from the internal ASC 1PPS . The time for this packet is set as the time of the lowest software channel number in this telemetry packet. If the specific time is needed add to it the difference of its actual ATLAS hardware channel number from the lowest software channel number times the 0.003125 seconds. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. pdu_p3p3v_dem5_i /atlas/housekeeping/pdu/delta_time long_name String PDU P3P3V DEM5 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P3P3V DEM5 I - A_HKT.chan[57] coordinates String delta_time pdu_n3v_dem1_i /atlas/housekeeping/pdu/delta_time long_name String PDU N3V DEM1 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU N3V DEM1 I - A_HKT.chan[52] coordinates String delta_time pdu_tcs_ofa_htr1_i /atlas/housekeeping/pdu/delta_time long_name String PDU TCS OFA HTR1 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU TCS OFA HTR1 I - A_HKT.chan[32] coordinates String delta_time pdu_lhp2_i /atlas/housekeeping/pdu/delta_time long_name String PDU LHP2 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU LHP2 I - A_HKT.chan[44] coordinates String delta_time pdu_meb_lvpc_v /atlas/housekeeping/pdu/delta_time long_name String PDU MEB LVPC V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU MEB LVPC V - A_HKT.chan[16] coordinates String delta_time pdu_tcs_ofa_htr6_i /atlas/housekeeping/pdu/delta_time long_name String PDU TCS OFA HTR6 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU TCS OFA HTR6 I - A_HKT.chan[37] coordinates String delta_time pdu_pwm_tlsp_pri_i /atlas/housekeeping/pdu/delta_time long_name String PDU PWM TLSP PRI I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU PWM TLSP PRI I - A_HKT.chan[39] coordinates String delta_time hvpc_mod_3 /atlas/housekeeping/pdu/delta_time long_name String HVPC Module 3 units String counts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String HVPC Module 3 - A_HKT.chan[72] coordinates String delta_time hvpc_tlm_7 /atlas/housekeeping/pdu/delta_time long_name String HVPC TLM 7 source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String HVPC TLM 7 - A_HKT.chan[77] coordinates String delta_time units String volts pdu_p5v_dem2_v /atlas/housekeeping/pdu/delta_time long_name String PDU P5V DEM2 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P5V DEM2 V - A_HKT.chan[3] coordinates String delta_time pdu_laser_1_v /atlas/housekeeping/pdu/delta_time long_name String PDU LASER 1 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU LASER 1 V - A_HKT.chan[14] coordinates String delta_time pdu_spare_4_v /atlas/housekeeping/pdu/delta_time long_name String PDU SPARE 4 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU SPARE 4 V - A_HKT.chan[30] coordinates String delta_time pdu_tcs_ofa_htr4_i /atlas/housekeeping/pdu/delta_time long_name String PDU TCS OFA HTR4 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU TCS OFA HTR4 I - A_HKT.chan[35] coordinates String delta_time pdu_laser_2_i /atlas/housekeeping/pdu/delta_time long_name String PDU LASER 2 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU LASER 2 I - A_HKT.chan[22] coordinates String delta_time pdu_n3v_dem2_i /atlas/housekeeping/pdu/delta_time long_name String PDU N3V DEM2 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU N3V DEM2 I - A_HKT.chan[63] coordinates String delta_time pdu_det_i /atlas/housekeeping/pdu/delta_time long_name String PDU DET I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU DET I - A_HKT.chan[23] coordinates String delta_time hvpc_mod_2 /atlas/housekeeping/pdu/delta_time long_name String HVPC Module 2 units String counts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String HVPC Module 2 - A_HKT.chan[71] coordinates String delta_time pdu_p3p3v_dem5_v /atlas/housekeeping/pdu/delta_time long_name String PDU P3P3V DEM5 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P3P3V DEM5 V - A_HKT.chan[10] coordinates String delta_time pdu_ofa_p12v_i /atlas/housekeeping/pdu/delta_time long_name String PDU OFA P12V I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU OFA P12V I - A_HKT.chan[59] coordinates String delta_time pdu_spare_5_v /atlas/housekeeping/pdu/delta_time long_name String A PDU SPARE 5V units String counts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String A_PDU_SPARE_5_V - HKT.chan[60] coordinates String delta_time pdu_p5v_dem6_i /atlas/housekeeping/pdu/delta_time long_name String PDU P5V DEM6 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P5V DEM6 I - A_HKT.chan[67] coordinates String delta_time pdu_n3v_dem3_i /atlas/housekeeping/pdu/delta_time long_name String PDU N3V DEM3 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU N3V DEM3 I - A_HKT.chan[55] coordinates String delta_time pdu_p5v_dem5_i /atlas/housekeeping/pdu/delta_time long_name String PDU P5V DEM5 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P5V DEM5 I - A_HKT.chan[56] coordinates String delta_time pdu_spare_2_v /atlas/housekeeping/pdu/delta_time long_name String PDU SPARE 2 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU SPARE 2 V - A_HKT.chan[28] coordinates String delta_time pdu_ofa_p12v_v /atlas/housekeeping/pdu/delta_time long_name String PDU OFA P12V V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU OFA P12V V - A_HKT.chan[12] coordinates String delta_time pdu_p3p3v_dem2_i /atlas/housekeeping/pdu/delta_time long_name String PDU P3P3V DEM2 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P3P3V DEM2 I - A_HKT.chan[62] coordinates String delta_time pdu_spd_p3p3v_v /atlas/housekeeping/pdu/delta_time long_name String PDU SPD P3P3V V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU SPD P3P3V V - A_HKT.chan[20] coordinates String delta_time pdu_lrs_opts_heater_i /atlas/housekeeping/pdu/delta_time long_name String PDU LRS OPTS HEATER I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU LRS OPTS HEATER I - A_HKT.chan[45] coordinates String delta_time pdu_n3v_dem4_i /atlas/housekeeping/pdu/delta_time long_name String PDU N3V DEM4 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU N3V DEM4 I - A_HKT.chan[66] coordinates String delta_time hvpc_mod_6 /atlas/housekeeping/pdu/delta_time long_name String HVPC Module 6 units String counts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String HVPC Module 6 - A_HKT.chan[75] coordinates String delta_time pdu_lrs_i /atlas/housekeeping/pdu/delta_time long_name String PDU LRS I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU LRS I - A_HKT.chan[25] coordinates String delta_time pdu_n3v_dem3_v /atlas/housekeeping/pdu/delta_time long_name String PDU N3V DEM3 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU N3V DEM3 V - A_HKT.chan[8] coordinates String delta_time pdu_p3p3v_dem4_i /atlas/housekeeping/pdu/delta_time long_name String PDU P3P3V DEM4 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P3P3V DEM4 I - A_HKT.chan[65] coordinates String delta_time pdu_p5v_dem2_i /atlas/housekeeping/pdu/delta_time long_name String PDU P5V DEM2 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P5V DEM2 I - A_HKT.chan[61] coordinates String delta_time pdu_p5v_dem5_v /atlas/housekeeping/pdu/delta_time long_name String PDU P5V DEM5 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P5V DEM5 V - A_HKT.chan[9] coordinates String delta_time pdu_meb_lvpc_i /atlas/housekeeping/pdu/delta_time long_name String PDU MEB LVPC I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU MEB LVPC I - A_HKT.chan[26] coordinates String delta_time pdu_n3v_dem2_v /atlas/housekeeping/pdu/delta_time long_name String PDU N3V DEM2 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU N3V DEM2 V - A_HKT.chan[5] coordinates String delta_time pdu_p3p3v_dem2_v /atlas/housekeeping/pdu/delta_time long_name String PDU P3P3V DEM2 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P3P3V DEM2 V - A_HKT.chan[4] coordinates String delta_time pdu_tcs_ofa_htr5_i /atlas/housekeeping/pdu/delta_time long_name String PDU TCS OFA HTR5 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU TCS OFA HTR5 I - A_HKT.chan[36] coordinates String delta_time pdu_tcs_ofa_htr7_i /atlas/housekeeping/pdu/delta_time long_name String PDU TCS OFA HTR7 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU TCS OFA HTR7 I - A_HKT.chan[38] coordinates String delta_time pdu_lhp1_i /atlas/housekeeping/pdu/delta_time long_name String PDU LHP1 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU LHP1 I - A_HKT.chan[43] coordinates String delta_time pdu_n3v_dem1_v /atlas/housekeeping/pdu/delta_time long_name String PDU N3V DEM1 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU N3V DEM1 V - A_HKT.chan[2] coordinates String delta_time pdu_p5v_dem1_i /atlas/housekeeping/pdu/delta_time long_name String PDU P5V DEM1 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P5V DEM1 I - A_HKT.chan[50] coordinates String delta_time pdu_p5v_dem3_i /atlas/housekeeping/pdu/delta_time long_name String PDU P5V DEM3 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P5V DEM3 I - A_HKT.chan[53] coordinates String delta_time pdu_spd_n5v_v /atlas/housekeeping/pdu/delta_time long_name String PDU SPD N5V V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU SPD N5V V - A_HKT.chan[19] coordinates String delta_time pdu_pwm_tlsp_tower_i /atlas/housekeeping/pdu/delta_time long_name String PDU PWM TLSP TOWER I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU PWM TLSP TOWER I - A_HKT.chan[41] coordinates String delta_time pdu_laser_2_v /atlas/housekeeping/pdu/delta_time long_name String PDU LASER 2 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU LASER 2 V - A_HKT.chan[15] coordinates String delta_time pdu_p3p3v_dem1_v /atlas/housekeeping/pdu/delta_time long_name String PDU P3P3V DEM1 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P3P3V DEM1 V - A_HKT.chan[1] coordinates String delta_time pdu_det_v /atlas/housekeeping/pdu/delta_time long_name String PDU DET V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU DET V - A_HKT.chan[17] coordinates String delta_time pdu_spd_p5v_i /atlas/housekeeping/pdu/delta_time long_name String PDU SPD P5V I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU SPD P5V I - A_HKT.chan[47] coordinates String delta_time pdu_p3p3v_dem3_v /atlas/housekeeping/pdu/delta_time long_name String PDU P3P3V DEM3 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P3P3V DEM3 V - A_HKT.chan[7] coordinates String delta_time pdu_n3v_dem5_i /atlas/housekeeping/pdu/delta_time long_name String PDU N3V DEM5 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU N3V DEM5 I - A_HKT.chan[58] coordinates String delta_time pdu_daa_opts_htr_i /atlas/housekeeping/pdu/delta_time long_name String PDU DAA OPTS HTR I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU DAA OPTS HTR I - A_HKT.chan[46] coordinates String delta_time hvpc_mod_4 /atlas/housekeeping/pdu/delta_time long_name String HVPC Module 4 units String counts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String HVPC Module 4 - A_HKT.chan[73] coordinates String delta_time pdu_spd_p5v_v /atlas/housekeeping/pdu/delta_time long_name String PDU SPD P5V V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU SPD P5V V - A_HKT.chan[18] coordinates String delta_time pdu_spare_3_v /atlas/housekeeping/pdu/delta_time long_name String PDU SPARE 3 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU SPARE 3 V - A_HKT.chan[29] coordinates String delta_time pdu_lhp_startup_htr_i /atlas/housekeeping/pdu/delta_time long_name String PDU LHP STARTUP HTR I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU LHP STARTUP HTR I - A_HKT.chan[42] coordinates String delta_time pdu_spd_n5v_i /atlas/housekeeping/pdu/delta_time long_name String PDU SPD N5V I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU SPD N5V I - A_HKT.chan[48] coordinates String delta_time pdu_p5v_dem1_v /atlas/housekeeping/pdu/delta_time long_name String PDU P5V DEM1 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P5V DEM1 V - A_HKT.chan[0] coordinates String delta_time pdu_tcs_ofa_htr2_i /atlas/housekeeping/pdu/delta_time long_name String PDU TCS OFA HTR2 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU TCS OFA HTR2 I - A_HKT.chan[33] coordinates String delta_time pdu_spd_p3p3v_i /atlas/housekeeping/pdu/delta_time long_name String PDU SPD P3P3V I source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU SPD P3P3V I - A_HKT.chan[49] coordinates String delta_time units String amps hvpc_mod_1 /atlas/housekeeping/pdu/delta_time long_name String HVPC Module 1 units String counts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String HVPC Module 1 - A_HKT.chan[70] coordinates String delta_time pdu_tcs_ofa_htr3_i /atlas/housekeeping/pdu/delta_time long_name String PDU TCS OFA HTR3 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU TCS OFA HTR3 I - A_HKT.chan[34] coordinates String delta_time pdu_spare_1_v /atlas/housekeeping/pdu/delta_time long_name String PDU SPARE 1 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU SPARE 1 V - A_HKT.chan[27] coordinates String delta_time pdu_laser_1_i /atlas/housekeeping/pdu/delta_time long_name String PDU LASER 1 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU LASER 1 I - A_HKT.chan[21] coordinates String delta_time pdu_p5v_dem3_v /atlas/housekeeping/pdu/delta_time long_name String PDU P5V DEM3 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P5V DEM3 V - A_HKT.chan[6] coordinates String delta_time pdu_pwm_tlsp_sec_i /atlas/housekeeping/pdu/delta_time long_name String PDU PWM TLSP SEC I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU PWM TLSP SEC I - A_HKT.chan[40] coordinates String delta_time pdu_n3v_dem6_i /atlas/housekeeping/pdu/delta_time long_name String PDU N3V DEM6 I source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU N3V DEM6 I - A_HKT.chan[69] coordinates String delta_time units String amps pdu_hvpc_i /atlas/housekeeping/pdu/delta_time long_name String PDU HVPC I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU HVPC I - A_HKT.chan[24] coordinates String delta_time hvpc_mod_5 /atlas/housekeeping/pdu/delta_time long_name String HVPC Module 5 units String counts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String HVPC Module 5 - A_HKT.chan[74] coordinates String delta_time pdu_p3p3v_dem1_i /atlas/housekeeping/pdu/delta_time long_name String PDU P3P3V DEM1 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P3P3V DEM1 I - A_HKT.chan[51] coordinates String delta_time pdu_p3p3v_dem6_i /atlas/housekeeping/pdu/delta_time long_name String PDU P3P3V DEM6 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P3P3V DEM6 I - A_HKT.chan[68] coordinates String delta_time hvpc_tlm_6 /atlas/housekeeping/pdu/delta_time long_name String HVPC TLM 6 units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String HVPC TLM 6 - A_HKT.chan[76] coordinates String delta_time pdu_p5v_dem4_i /atlas/housekeeping/pdu/delta_time long_name String PDU P5V DEM4 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P5V DEM4 I - A_HKT.chan[64] coordinates String delta_time pdu_p3p3v_dem3_i /atlas/housekeeping/pdu/delta_time long_name String PDU P3P3V DEM3 I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU P3P3V DEM3 I - A_HKT.chan[54] coordinates String delta_time pdu_ofa_n12v_v /atlas/housekeeping/pdu/delta_time long_name String PDU OFA N12V V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU OFA N12V V - A_HKT.chan[13] coordinates String delta_time pdu_n3v_dem5_v /atlas/housekeeping/pdu/delta_time long_name String PDU N3V DEM5 V units String volts source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU N3V DEM5 V - A_HKT.chan[11] coordinates String delta_time pdu_tams_i /atlas/housekeeping/pdu/delta_time long_name String PDU TAMS I units String amps source String ATL01/atlas/a_hkt_a_1059 converted contentType String referenceInformation description String PDU TAMS I - A_HKT.chan[31] coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String PDU Analog HK Telemetry. The PDU analog telemetry digitized by the HKT card and collected by the SBC Thermal Control Task. Packet Frequency is 1 in Hertz. Data is from the APID 1059 (Primary) or APID 1060 (Redundant) HK packets. data_rate String Data within this group are stored at the data rate of the source APID. (Nominally 1HZ). position_velocity delta_time 423 delta_time /atlas/housekeeping/position_velocity/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. z_sc_eci_pos /atlas/housekeeping/position_velocity/delta_time long_name String z_sc_eci_pos units String meters source String ATL01/atlas/a_sc_pos_1137 contentType String referenceInformation description String Spacecraft Earth-Centered-Inertial Position: Z axis coordinates String delta_time z_sc_eci_vel /atlas/housekeeping/position_velocity/delta_time long_name String z_sc_eci_vel source String ATL01/atlas/a_sc_pos_1137 contentType String referenceInformation description String Spacecraft Earth-Centered-Inertial Velocity: Z axis coordinates String delta_time units String meters/second sc_solution_sec /atlas/housekeeping/position_velocity/delta_time long_name String sc_solution_sec units String seconds source String ATL01/atlas/a_sc_pos_1137 contentType String referenceInformation description String Recorded time of the position/velocity solution in seconds from the spacecraft epoch coordinates String delta_time sc_solution_subsec /atlas/housekeeping/position_velocity/delta_time long_name String sc_solution_subsec units String seconds source String ATL01/atlas/a_sc_pos_1137 contentType String referenceInformation description String Spacecraft recorded time counts - 24 bits, 100 ns per count coordinates String delta_time x_sc_eci_vel /atlas/housekeeping/position_velocity/delta_time long_name String x_sc_eci_vel source String ATL01/atlas/a_sc_pos_1137 contentType String referenceInformation description String Spacecraft Earth-Centered-Inertial Velocity: X axis coordinates String delta_time units String meters/second y_sc_eci_vel /atlas/housekeeping/position_velocity/delta_time long_name String y_sc_eci_vel units String meters/second source String ATL01/atlas/a_sc_pos_1137 contentType String referenceInformation description String Spacecraft Earth-Centered-Inertial Velocity: Y axis coordinates String delta_time y_sc_eci_pos /atlas/housekeeping/position_velocity/delta_time long_name String y_sc_eci_pos units String meters source String ATL01/atlas/a_sc_pos_1137 contentType String referenceInformation description String Spacecraft Earth-Centered-Inertial Position: Y axis coordinates String delta_time x_sc_eci_pos /atlas/housekeeping/position_velocity/delta_time long_name String x_sc_eci_pos units String meters source String ATL01/atlas/a_sc_pos_1137 contentType String referenceInformation description String Spacecraft Earth-Centered-Inertial Position: X axis coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String APID 1137 ATLAS Position Message-Spacecraft Position and Velocity Packet - Relayed to SSR. Packet Frequency is in Hertz. data_rate String Data within this group are stored at the data rate of the source APIDs. (only downlinked on command). status delta_time 423 delta_time /atlas/housekeeping/status/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. pdub_ofa1 /atlas/housekeeping/status/delta_time long_name String PDUB_OFA1 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_OFA1 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_lhp_startup /atlas/housekeeping/status/delta_time long_name String PDUB_LHP_STARTUP status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_LHP_STARTUP status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_det_ps /atlas/housekeeping/status/delta_time long_name String PDUB_DET_PS status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_DET_PS status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_spare_sig /atlas/housekeeping/status/delta_time units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_SPARE_SIG status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 long_name String PDUB_SPARE_SIG status flag pdub_ofa7 /atlas/housekeeping/status/delta_time long_name String PDUB_OFA7 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_OFA7 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_lrs_opt /atlas/housekeeping/status/delta_time long_name String PDUB_LRS_OPT status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_LRS_OPT status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_laser_2 /atlas/housekeeping/status/delta_time long_name String PDUB_LASER_2 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_LASER_2 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_ofa_ps /atlas/housekeeping/status/delta_time long_name String PDUB_OFA_PS status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_OFA_PS status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_ofa5 /atlas/housekeeping/status/delta_time long_name String PDUB_OFA5 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_OFA5 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_spd_ps /atlas/housekeeping/status/delta_time long_name String PDUA_SPD_PS status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_SPD_PS status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_lhp_startup /atlas/housekeeping/status/delta_time units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_LHP_STARTUP status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 long_name String PDUA_LHP_STARTUP status flag pdua_pri_mir /atlas/housekeeping/status/delta_time long_name String PDUA_PRI_MIR status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_PRI_MIR status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_hvpc /atlas/housekeeping/status/delta_time long_name String PDUA_HVPC status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_HVPC status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_tams_ls /atlas/housekeeping/status/delta_time long_name String PDUB_TAMS_LS status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_TAMS_LS status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_daa_opt /atlas/housekeeping/status/delta_time long_name String PDUA_DAA_OPT status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_DAA_OPT status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_ofa4 /atlas/housekeeping/status/delta_time long_name String PDUB_OFA4 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_OFA4 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_sec_mir /atlas/housekeeping/status/delta_time long_name String PDUB_SEC_MIR status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_SEC_MIR status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_lrs /atlas/housekeeping/status/delta_time long_name String PDUA_LRS status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_LRS status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_lhp2 /atlas/housekeeping/status/delta_time long_name String PDUB_LHP2 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_LHP2 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_det_ps /atlas/housekeeping/status/delta_time long_name String PDUA_DET_PS status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_DET_PS status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_spare_sig /atlas/housekeeping/status/delta_time long_name String PDUA_SPARE_SIG status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_SPARE_SIG status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_ofa5 /atlas/housekeeping/status/delta_time long_name String PDUA_OFA5 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_OFA5 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_hvpc /atlas/housekeeping/status/delta_time long_name String PDUB_HVPC status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_HVPC status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_spd_ps /atlas/housekeeping/status/delta_time long_name String PDUB_SPD_PS status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_SPD_PS status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_laser_2 /atlas/housekeeping/status/delta_time long_name String PDUA_LASER_2 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_LASER_2 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_ofa6 /atlas/housekeeping/status/delta_time long_name String PDUB_OFA6 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_OFA6 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_tower /atlas/housekeeping/status/delta_time long_name String PDUA_TOWER status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_TOWER status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_ofa4 /atlas/housekeeping/status/delta_time long_name String PDUA_OFA4 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_OFA4 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_ofa2 /atlas/housekeeping/status/delta_time long_name String PDUA_OFA2 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_OFA2 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_ofa_ps /atlas/housekeeping/status/delta_time long_name String PDUA_OFA_PS status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_OFA_PS status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_ofa1 /atlas/housekeeping/status/delta_time long_name String PDUA_OFA1 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_OFA1 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_lrs_opt /atlas/housekeeping/status/delta_time long_name String PDUA_LRS_OPT status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_LRS_OPT status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_lrs /atlas/housekeeping/status/delta_time long_name String PDUB_LRS status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_LRS status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_ofa6 /atlas/housekeeping/status/delta_time long_name String PDUA_OFA6 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_OFA6 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_laser_1 /atlas/housekeeping/status/delta_time long_name String PDUA_LASER_1 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_LASER_1 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_sec_mir /atlas/housekeeping/status/delta_time long_name String PDUA_SEC_MIR status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_SEC_MIR status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_ofa2 /atlas/housekeeping/status/delta_time long_name String PDUB_OFA2 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_OFA2 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_tower /atlas/housekeeping/status/delta_time long_name String PDUB_TOWER status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_TOWER status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_ofa7 /atlas/housekeeping/status/delta_time long_name String PDUA_OFA7 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_OFA7 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_daa_opt /atlas/housekeeping/status/delta_time long_name String PDUB_DAA_OPT status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_DAA_OPT status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_tams_ls /atlas/housekeeping/status/delta_time long_name String PDUA_TAMS_LS status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_TAMS_LS status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_lhp2 /atlas/housekeeping/status/delta_time long_name String PDUA_LHP2 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_LHP2 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_ofa3 /atlas/housekeeping/status/delta_time long_name String PDUB_OFA3 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_OFA3 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_ofa3 /atlas/housekeeping/status/delta_time long_name String PDUA_OFA3 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_OFA3 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_laser_1 /atlas/housekeeping/status/delta_time long_name String PDUB_LASER_1 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_LASER_1 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdua_lhp1 /atlas/housekeeping/status/delta_time long_name String PDUA_LHP1 status flag units String counts source String ATL01/atlas/a_hkt_status_1065 converted contentType String referenceInformation description String PDUA_LHP1 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_pri_mir /atlas/housekeeping/status/delta_time long_name String PDUB_PRI_MIR status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_PRI_MIR status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 pdub_lhp1 /atlas/housekeeping/status/delta_time long_name String PDUB_LHP1 status flag units String 1 source String ATL01/atlas/a_hkt_status_1065 converted valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String PDUB_LHP1 status flag. 0=ON, 1=OFF coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Flags parsed from HKT Status Registers Housekeeping Packet. Packet Frequency is 1 in Hertz. data_rate String Data within this group are stored at the data rate of the source APID. (Nominally 1HZ). time_at_the_tone delta_time 423 delta_time /atlas/housekeeping/time_at_the_tone/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. gps_1pps_sec /atlas/housekeeping/time_at_the_tone/delta_time long_name String gps 1pps units String seconds since January 6, 1980 source String ATL01/APID 1136 Byte 0014-0017 contentType String referenceInformation description String GPS reported seconds. coordinates String delta_time gps_1pps_subsec /atlas/housekeeping/time_at_the_tone/delta_time long_name String gps 1pps subsec units String milliseconds source String ATL01/APID 1136 Byte 0014-0017 contentType String referenceInformation description String GPS reported subseconds coordinates String delta_time sc_time_1pps_sec /atlas/housekeeping/time_at_the_tone/delta_time long_name String SC time at 1 pps units String seconds since January 6, 1980 source String ATL01/APID 1136 Byte 0014-0017 contentType String referenceInformation description String SC time at the reception of the last 1PPS signal from the GPSR. coordinates String delta_time sc_time_1pps_subsec /atlas/housekeeping/time_at_the_tone/delta_time long_name String SC time at 1 pps (subsec) units String 100 nanoseconds source String ATL01/APID 1136 Byte 0014-0017 contentType String referenceInformation description String Subsecond portion of the SC time at the reception of the last 1PPS signal from the GPSR (seconds since SC epoch: 6-Jan-1980 00:00:00) coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String APID 1136 Spacecraft Time at the Tone Packet - Relayed to SSR. Packet Frequency is by command. ATLAS Time-At-The-Tone-Was Message data_rate String Data within this group are stored at the data rate of the source APIDs. (only downlinked on command). tx_pulse_width delta_time 4229843 delta_time /atlas/tx_pulse_width/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Operations contentType String referenceInformation description String Elapsed seconds since the ATLAS SDP GPS Epoch, associated with the transmit time where data from all 3 PCEs are present and aligned. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. tx_pulse_skew_est /atlas/tx_pulse_width/delta_time units String seconds _FillValue Float32 3.402823466e+38 long_name String Transmit Pulse Skew Estimate source String ATL02 ATBD, Section 7.2 contentType String modelResult description String The difference between the averages of the lower and upper threshold crossing times. This is an estimate of the transmit pulse skew. coordinates String delta_time tx_pulse_width_lower /atlas/tx_pulse_width/delta_time _FillValue Float32 3.402823466e+38 long_name String Transmit Pulse Energy Lower Width units String seconds source String ATL03 ATBD contentType String modelResult description String The distance between the lower threshold crossing times measured by the Start Pulse Detector. Only present when data from all 3 PCEs are available and aligned. coordinates String delta_time tx_pulse_width_upper /atlas/tx_pulse_width/delta_time _FillValue Float32 3.402823466e+38 long_name String Transmit Pulse Energy Upper Width units String seconds source String ATL03 ATBD contentType String modelResult description String The distance between the upper threshold crossing times measured by the Start Pulse Detector. Only present when data from all 3 PCEs are available and aligned. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters to characterize the ATLAS pulse shape, derived from the Start Pulse Detector data. data_rate String Parameters in this group are stored at the ATLAS shot rate. pce2 Description String Group contains the Photon Counting Electronics x (PCEx) packet decommutated data data_rate String Data within this group are stored at the data rate of the source PCE Data Packets. (nominally fifty per second.) sxp_ssr_s delta_time 423 ds_50samples 50 delta_time /atlas/pce2/sxp_ssr_s/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_50samples /atlas/pce2/sxp_ssr_s/ds_50samples long_name String DS for 50 bytes units String 1 source String ATL01/atlas/pcex/a_sxp_ssr valid_min Int8 1 valid_max Int8 50 contentType String referenceInformation description String Dimension scale for an array of 50 samples. coordinates String delta_time latitude longitude latitude /atlas/pce2/sxp_ssr_s/delta_time /atlas/pce2/sxp_ssr_s/ds_50samples long_name String latitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Latitude coordinates String delta_time longitude /atlas/pce2/sxp_ssr_s/delta_time /atlas/pce2/sxp_ssr_s/ds_50samples long_name String longitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Longitude coordinates String delta_time mf_cosz /atlas/pce2/sxp_ssr_s/delta_time long_name String First Major Frame cosZ units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the solar zenith angle coordinates String delta_time latitude longitude pce_mframe_cnt /atlas/pce2/sxp_ssr_s/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. coordinates String delta_time latitude longitude cosb /atlas/pce2/sxp_ssr_s/delta_time /atlas/pce2/sxp_ssr_s/ds_50samples long_name String cosB units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the off-nadir angle as calculated onboard from the spacecraft information coordinates String delta_time latitude longitude srm /atlas/pce2/sxp_ssr_s/delta_time /atlas/pce2/sxp_ssr_s/ds_50samples long_name String srm units String 1 source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Surface type, vegetation and coastline information from the SRM. (bit 0-1 = surface type (0=ocean, 1=land, 2=sea ice, 3=land ice). Bit 2 = vegetation present, Bit 3 = coastline present) coordinates String delta_time latitude longitude DODS_EXTRA Container Unlimited_Dimension String delta_time ds_50samples Description String SBC Extrapolation Task telemetry containing Flight Science Receiver Algorithm team requested telemetry for the first set of PCE extrapolation data for a major frame.: lat, long, range, nadir angle, etc. (from APIDs 1152 thru 1157) dfc_hk delta_time 21150 delta_time /atlas/pce2/dfc_hk/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. alt_last_seq_count /atlas/pce2/dfc_hk/delta_time long_name String last sequence packet count units String counts source String APID 1072, 1088, 1104 Byte 0060-0061 contentType String referenceInformation description String CCSDS Packet Sequence Count value of the last downlink packet prior to the major frame. This should be the last packet associated with the previous major frame. That packet should contain the last Tx/RX data for the last shot of the previous major frame. (not EU-converted) coordinates String delta_time alt_rw_start_reg_w /atlas/pce2/dfc_hk/delta_time long_name String Altimetric Weak Range Window Start Reg units String counts source String APID 1072, 1088, 1104 Byte 0086-0088 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the altimetric range window for the weak spot. (not EU-converted) coordinates String delta_time alt_t0_cnt /atlas/pce2/dfc_hk/delta_time long_name String T0 counter units String counts source String APID 1072, 1088, 1104 Byte 0028-0029 contentType String referenceInformation description String ATLAS flight s/w T0 counter that clears with 1PPS (not EU-converted) coordinates String delta_time alt_spw_not_ready_cnt /atlas/pce2/dfc_hk/delta_time long_name String SpW Not Ready Counter units String counts source String APID 1072, 1088, 1104 Byte 0115 contentType String referenceInformation description String Counts each time SpW causes DFC to wait to transmit data to back-end (Status Only) (not EU-converted) coordinates String delta_time alt_sci_seg_limit /atlas/pce2/dfc_hk/delta_time long_name String Science Data Segment Limit Size units String counts source String APID 1072, 1088, 1104 Byte 0069-0070 contentType String referenceInformation description String Science Data Segment Limit Size ; initialization Value (not EU-converted) coordinates String delta_time alt_rw_start_reg_s /atlas/pce2/dfc_hk/delta_time long_name String Altimetric Strong Range Window Start Reg units String counts source String APID 1072, 1088, 1104 Byte 0076-0078 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the altimetric range window for the strong spot (not EU-converted) coordinates String delta_time alt_spot_tag_cnts_s 21150 4 long_name String strong spot tag counter units String counts source String APID 1072, 1088, 1104 Byte 0034-0041 contentType String referenceInformation description String The number of events received by the DFC on channels 1 through 16 summed over 50 range window openings. The four elements of the array correspond to dividing the major frame up into 50 shots. The last element of the array can be 49 or 51 shots depending on the alignment of the range windows with respect to the major frame. Note that these counts are time tag counts and are subject to all the limitations and behaviors associated with time tags (duplicates, FIFO overflows, etc.). (not EU-converted) coordinates String delta_time alt_rw_width_reg_s /atlas/pce2/dfc_hk/delta_time long_name String Altimetric Strong Range Window Width Reg units String counts source String APID 1072, 1088, 1104 Byte 0079-0080 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the range window start and range window stop for the strong spot. (not EU-converted) coordinates String delta_time alt_spot_tag_cnts_w 21150 4 long_name String weak spot tag counter units String counts source String APID 1072, 1088, 1104 Byte 0042-48 contentType String referenceInformation description String The number of events received by the DFC on channels 17 through 20 summed over 50 range window openings. The four elements of the array correspond to dividing the major frame up into 50 shots. The last element of the array can be 49 or 51 shots depending on the alignment of the range windows with respect to the major frame. Note that these counts are time tag counts and are subject to all the limitations and behaviors associated with time tags (duplicates, FIFO overflows, etc.). (not EU-converted) coordinates String delta_time alt_cmd_count /atlas/pce2/dfc_hk/delta_time long_name String Command Counter units String counts source String APID 1072, 1088, 1104 Byte 0062-0063 contentType String referenceInformation description String Command Counter; Indicates the number of good commands received by the DFC prior to the Major Frame Packet being transmitted (not EU-converted) coordinates String delta_time alt_gp_reg 21150 2 long_name String General Purpose Register units String counts source String APID 1072, 1088, 1104 Byte 0100-0101 contentType String referenceInformation description String General Purpose Register (not EU-converted) coordinates String delta_time tx_leading_coarse /atlas/pce2/dfc_hk/delta_time long_name String tx latest leading edge coarse units String counts source String APID 1072, 1088, 1104 Byte 0054-0056 contentType String referenceInformation description String Latest Leading Start Time Tag-acquired leading start time tag value (paired with trailing start time time tag value) coarse time in counts (not EU-converted) coordinates String delta_time alt_dfc_hk_status 21150 5 source String APID 1072, 1088, 1104 Byte 0106-0110 contentType String referenceInformation description String DFC Housekeeping Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12 (not EU-converted) coordinates String delta_time long_name String DFC Housekeeping Status Bits units String counts alt_write_watchdog /atlas/pce2/dfc_hk/delta_time long_name String Tag write watchdog value units String counts source String APID 1072, 1088, 1104 Byte 0072-0073 contentType String referenceInformation description String Tag write watchdog value ; initialization Value (not EU-converted) coordinates String delta_time atm_rw_start_reg_s /atlas/pce2/dfc_hk/delta_time long_name String Atmospheric Strong Range Window Start Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0081-0083 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the Atmospheric range window for the strong spot. (not EU-converted) coordinates String delta_time alt_dupe_margin /atlas/pce2/dfc_hk/delta_time long_name String Duplicate time tag removal units String counts source String APID 1072, 1088, 1104 Byte 0066-0067 contentType String referenceInformation description String Duplicate time tag removal ; initialization Value (not EU-converted) coordinates String delta_time tx_trailing_cell /atlas/pce2/dfc_hk/delta_time long_name String tx latest trailing edge fine units String counts source String APID 1072, 1088, 1104 Byte 0057-0059 contentType String referenceInformation description String Latest trailing Start Time Tag-acquired trailing start time tag value (paired with trailing start time time tag value) cell counts (not EU-converted) coordinates String delta_time atm_rw_width_reg_w /atlas/pce2/dfc_hk/delta_time long_name String Atmospheric Weak Range Window Width Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0094-0095 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the Atmospheric range window start and range window stop for the weak spot. (not EU-converted) coordinates String delta_time alt_mframe_freq /atlas/pce2/dfc_hk/delta_time long_name String Major frame frequency units String counts source String APID 1072, 1088, 1104 Byte 0074 contentType String referenceInformation description String The number of shots per major frame. (not EU-converted) coordinates String delta_time alt_debug_status 21150 3 long_name String Debug Status Bits units String counts source String APID 1072, 1088, 1104 Byte 0112-0114 contentType String referenceInformation description String Debug Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12. (not EU-converted) coordinates String delta_time alt_config /atlas/pce2/dfc_hk/delta_time long_name String Configuration units String counts source String APID 1072, 1088, 1104 Byte 0075 contentType String referenceInformation description String Configuration bits (not EU-converted) coordinates String delta_time tx_trailing_coarse /atlas/pce2/dfc_hk/delta_time long_name String tx latest trailing edge coarse units String counts source String APID 1072, 1088, 1104 Byte 0057-0059 contentType String referenceInformation description String Latest trailing Start Time Tag-acquired trailing start time tag value (paired with trailing start time time tag value) coarse time in counts (not EU-converted) coordinates String delta_time alt_sci_addr /atlas/pce2/dfc_hk/delta_time long_name String Logical address for science data transmit units String counts source String APID 1072, 1088, 1104 Byte 0065 contentType String referenceInformation description String Logical address for science data transmit ; initialization Value (not EU-converted) coordinates String delta_time alt_wait_watchdog /atlas/pce2/dfc_hk/delta_time long_name String Tag wait watchdog value units String counts source String APID 1072, 1088, 1104 Byte 0071 contentType String referenceInformation description String Tag wait watchdog value ; initialization Value (not EU-converted) coordinates String delta_time tx_leading_cell /atlas/pce2/dfc_hk/delta_time long_name String tx latest leading edge fine units String counts source String APID 1072, 1088, 1104 Byte 0054-0056 contentType String referenceInformation description String Latest Leading Start Time Tag-acquired leading start time tag value (paired with trailing start time time tag value) cell counts (not EU-converted) coordinates String delta_time atm_rw_start_reg_w /atlas/pce2/dfc_hk/delta_time long_name String Atmospheric Weak Range Window Start Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0091-0093 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the Atmospheric range window for the weak spot. (not EU-converted) coordinates String delta_time atm_rw_width_reg_s /atlas/pce2/dfc_hk/delta_time long_name String Atmospheric Strong Range Window Width Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0084-0085 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the Atmospheric range window start and range window stop for the strong spot. (not EU-converted) coordinates String delta_time alt_imet_at_1pps /atlas/pce2/dfc_hk/delta_time long_name String IMET at 1 pps units String counts source String APID 1072, 1088, 1104 Byte 0016-0021 contentType String referenceInformation description String ATLAS flight s/w 25 MHz IMET counter value when 1PPS is received (not EU-converted) coordinates String delta_time alt_debug_reg 21150 4 long_name String Debug Control Register units String counts source String APID 1072, 1088, 1104 Byte 0096-0099 contentType String referenceInformation description String Debug Control Register (not EU-converted) coordinates String delta_time alt_cal_interval /atlas/pce2/dfc_hk/delta_time long_name String Calibration request interval from TDC units String counts source String APID 1072, 1088, 1104 Byte 0068 contentType String referenceInformation description String Calibration request interval from TDC (not EU-converted) coordinates String delta_time alt_edac_status 21150 4 long_name String EDAC Status Bits units String counts source String APID 1072, 1088, 1104 Byte 102-105 contentType String referenceInformation description String EDAC Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12 (not EU-converted) coordinates String delta_time alt_cal_rise /atlas/pce2/dfc_hk/delta_time units String counts long_name String Altimetric Latest Calibration Rising source String APID 1072, 1088, 1104 Byte 0050-0051 contentType String referenceInformation description String The PCE latest calibration value for the rising edge (not EU-converted) coordinates String delta_time pce_mframe_cnt /atlas/pce2/dfc_hk/delta_time long_name String PCE Major frame counter units String counts source String APID 1072, 1088, 1104 Byte 0030-0033 contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time alt_imet_at_first_t0 /atlas/pce2/dfc_hk/delta_time long_name String IMET at first T0 after 1 pps units String counts source String APID 1072, 1088, 1104 Byte 0022-0027 contentType String referenceInformation description String ATLAS flight s/w 25 MHz IMET counter value when 1PPS is received (not EU-converted) coordinates String delta_time alt_last_opcode /atlas/pce2/dfc_hk/delta_time long_name String Last Opcode Received units String counts source String APID 1072, 1088, 1104 Byte 0064 contentType String referenceInformation description String Indicates the last good opcode received prior to the Major Frame Packet being transmitted; 0xFF indicates an error condition of either protocol ID mismatch, invalid opcode, or invalid length (not EU-converted) coordinates String delta_time alt_rw_width_reg_w /atlas/pce2/dfc_hk/delta_time long_name String Altimetric Weak Range Window Width Reg units String counts source String APID 1072, 1088, 1104 Byte 0089-0090 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the range window start and range window stop for the weak spot. (not EU-converted) coordinates String delta_time alt_1pps_count /atlas/pce2/dfc_hk/delta_time long_name String MET 1pps counter units String counts source String APID 1072, 1088, 1104 Byte 0012-0015 contentType String referenceInformation description String ATLAS flight s/w 1PPS counter (not EU-converted) coordinates String delta_time alt_dfc_status /atlas/pce2/dfc_hk/delta_time long_name String DFC Status Bits units String counts source String APID 1072, 1088, 1104 Byte 0111 contentType String referenceInformation description String DFC Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12 (not EU-converted) coordinates String delta_time alt_cal_fall /atlas/pce2/dfc_hk/delta_time long_name String Altimetric Latest Calibration Falling units String counts source String APID 1072, 1088, 1104 Byte 0052-0053 contentType String referenceInformation description String The PCE latest calibration value for the falling edge. (not EU-converted) coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String This DFCx_hk is a diagnostic packet (APID 1072, 1088, 1104) that contains some of the parameters normally part of APID 1254, 1264, 1274 (as sequence flag 01). Also know as the PCE Altimetric Science Data Major Frame described in ICESat-2-MEB-SPEC-0875, section 5.13 Table 19. The data in the group are neither calibrated nor EU-converted, but preserved from ATL01 in order provided diagnostics for TOF processing. data_rate String Data within this group are stored at the data rate of the source APID (nominally 50 Hz). algorithm_science delta_time 21150 ds_4bytes 4 ds_2samples 2 ds_2samples /atlas/pce2/algorithm_science/ds_2samples long_name String DS for 2 bytes units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 2 contentType String referenceInformation description String Dimension scale for an array of 2 samples. ds_4bytes /atlas/pce2/algorithm_science/ds_4bytes long_name String DS for 4 bytes units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 4 contentType String referenceInformation description String Dimension scale for an array of 4 bytes. delta_time /atlas/pce2/algorithm_science/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. gps_time /atlas/pce2/algorithm_science/delta_time long_name String GPS seconds at the Major Frame units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String GPS seconds at the Major Frame coordinates String delta_time alt_band_mask /atlas/pce2/algorithm_science/delta_time /atlas/pce2/algorithm_science/ds_4bytes long_name String Band Mask units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Band Mask. Each byte corresponds to a single Band, in the order of 1-4. coordinates String delta_time amet_time /atlas/pce2/algorithm_science/delta_time long_name String AMET seconds at the Major Frame units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String AMET seconds at the Major Frame coordinates String delta_time useflag /atlas/pce2/algorithm_science/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 alt_band_channel_mask /atlas/pce2/algorithm_science/delta_time /atlas/pce2/algorithm_science/ds_4bytes long_name String Band Channel Mask units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Band Channel Mask. (Bands 1-4) coordinates String delta_time pce_mframe_cnt /atlas/pce2/algorithm_science/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. coordinates String delta_time alt_nbands /atlas/pce2/algorithm_science/delta_time long_name String Number of bands units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Number of bands. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_4bytes ds_2samples Description String The PCE PMF Algorithm Science data group. Contains outputs from the onboard receiver algorithm software. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) weak alt_error_flags /atlas/pce2/algorithm_science/delta_time /atlas/pce2/algorithm_science/ds_2samples source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String FSW error flags coordinates String ../delta_time long_name String Error Flags units String counts daynight_flag /atlas/pce2/algorithm_science/delta_time long_name String Day/Night flag units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science valid_min Byte 0 valid_max Byte 1 contentType String referenceInformation description String ATLAS flight software Day/Night Flag associated with the major frame. 0= day, 1 =night. Based on an algorithm determination of the background rate, not on the actual position of the sun. coordinates String ../delta_time flag_meanings String day night flag_values Byte 0 1 decisionflags /atlas/pce2/algorithm_science/delta_time /atlas/pce2/algorithm_science/ds_4bytes long_name String Decision Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w Decision Flags associated with the major frame. indication if there was an error or if no science data is sent and why coordinates String ../delta_time flywheel /atlas/pce2/algorithm_science/delta_time long_name String Flywheel units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Flywheel associated with the major frame. coordinates String ../delta_time signalflags /atlas/pce2/algorithm_science/delta_time long_name String Signal Found Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w signal event flags associated with the major frame. coordinates String ../delta_time Description String The PCE PMF Algorithm Science data group. Contains outputs from the onboard receiver algorithm software. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) strong alt_error_flags /atlas/pce2/algorithm_science/delta_time /atlas/pce2/algorithm_science/ds_2samples source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String FSW error flags coordinates String ../delta_time long_name String Error Flags units String counts daynight_flag /atlas/pce2/algorithm_science/delta_time long_name String Day/Night flag units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science valid_min Byte 0 valid_max Byte 1 contentType String referenceInformation description String ATLAS flight software Day/Night Flag associated with the major frame. 0= day, 1 =night. Based on an algorithm determination of the background rate, not on the actual position of the sun. coordinates String ../delta_time flag_meanings String day night flag_values Byte 0 1 decisionflags /atlas/pce2/algorithm_science/delta_time /atlas/pce2/algorithm_science/ds_4bytes long_name String Decision Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w Decision Flags associated with the major frame. indication if there was an error or if no science data is sent and why coordinates String ../delta_time flywheel /atlas/pce2/algorithm_science/delta_time long_name String Flywheel units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Flywheel associated with the major frame. coordinates String ../delta_time signalflags /atlas/pce2/algorithm_science/delta_time long_name String Signal Found Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w signal event flags associated with the major frame. coordinates String ../delta_time Description String The PCE PMF Algorithm Science data group. Contains outputs from the onboard receiver algorithm software. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) altimetry delta_time 21150 ds_weak_channel_index 4 ds_strong_channel_index 16 ds_hist 199 ds_hist /atlas/pce2/altimetry/ds_hist long_name String Histogram Dimension Scale units String seconds source String ATL02 contentType String referenceInformation description String Relative bin values of windowed, peak-centered TOF histograms. Peak value = 0 delta_time /atlas/pce2/altimetry/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_strong_channel_index /atlas/pce2/altimetry/ds_strong_channel_index long_name String DS for Strong Channels units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 16 contentType String referenceInformation description String Dimension scale for strong channels. ds_weak_channel_index /atlas/pce2/altimetry/ds_weak_channel_index long_name String DS for Weak Channels units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 4 contentType String referenceInformation description String Dimension scale for weak channels. ch_mask_s /atlas/pce2/altimetry/delta_time /atlas/pce2/altimetry/ds_strong_channel_index long_name String Channel Mask Strong units String counts source String ATL01/atlas/pcex/a_alt_science contentType String referenceInformation description String Channel Mask for DLBOs. The 16 flags are a logical OR of the two band offset masks for strong beam coordinates String delta_time cal_rise_sm /atlas/pce2/altimetry/delta_time long_name String Altimetric Latest Calibration Rising units String seconds/cell source String Derived via L1B ATBD contentType String referenceInformation description String The smoothed, calibrated value for the rising edge used to convert cell counts to units of time. time per cell count based on USO for each PCE. coordinates String delta_time cal_fall_sm /atlas/pce2/altimetry/delta_time long_name String Altimetric Latest Calibration Falling units String seconds/cell source String Derived via L1B ATBD contentType String referenceInformation description String The smoothed, calibrated value for the falling edge used to convert cell counts to units of time. time per cell count based on USO for each PCE. coordinates String delta_time useflag /atlas/pce2/altimetry/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 pce_mframe_cnt /atlas/pce2/altimetry/delta_time long_name String PCE Major frame counter units String counts source String ATL02 contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time n_bands /atlas/pce2/altimetry/delta_time long_name String Number Downlink Bands units String counts source String ATL01/atlas/pcex/a_alt_science contentType String referenceInformation description String Number of bands (in addition to the nominal 1 band) selected for downlink. coordinates String delta_time ch_mask_w /atlas/pce2/altimetry/delta_time /atlas/pce2/altimetry/ds_weak_channel_index long_name String Channel Mask Weak units String counts source String ATL01/atlas/pcex/a_alt_science contentType String referenceInformation description String Channel Mask for DLBOs. The 4 flags are a logical OR of the two band offset masks for weak beam coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_weak_channel_index ds_strong_channel_index ds_hist Description String The PCE Altimetry Science Packet data common to both beams (PCEx_ALT_SCI_TLM_MID in APID 1254, 1264, 1274 sequence flag 01 (once per major frame). (see ICESat-2-MEB-SPEC-0875, section 5.12, Spacewire: Major Frame Packet Data Format data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) weak band2_width /atlas/pce2/altimetry/delta_time long_name String Band2 Width units String seconds source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band2. coordinates String ../delta_time band1_offset /atlas/pce2/altimetry/delta_time long_name String Band1 Offset source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band1. coordinates String ../delta_time units String seconds band1_width /atlas/pce2/altimetry/delta_time long_name String Band1 Width source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band1. coordinates String ../delta_time units String seconds alt_rw_width /atlas/pce2/altimetry/delta_time long_name String Altimetric Range Window Width units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds from the range window start and range window stop coordinates String ../delta_time hist /atlas/pce2/altimetry/delta_time /atlas/pce2/altimetry/ds_hist long_name String Center-aligned TOF Histogram units String counts source String ATL02 contentType String qualityInformation description String Per-major frame, peak-aligned, windowed time-of-flight histograms. coordinates String ../ds_hist ../delta_time alt_rw_start /atlas/pce2/altimetry/delta_time long_name String Altimetric Range Window Start units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds between the transmit pulse and the start of the altimetric range window for the beam coordinates String ../delta_time band2_offset /atlas/pce2/altimetry/delta_time long_name String Band2 Offset units String seconds source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band2. coordinates String ../delta_time n_mf_ph /atlas/pce2/altimetry/delta_time long_name String Number of photons units String counts source String Derived contentType String auxiliaryInformation description String Number of photons within each major frame. coordinates String ../delta_time ph_ndx_beg /atlas/pce2/altimetry/delta_time long_name String Photon Index Begin units String counts source String Derived contentType String auxiliaryInformation description String Index (1-based) within the photon-rate data of the first photon within each major frame. coordinates String ../delta_time Description String The PCE Altimetry Science Packet specific to a beam (PCEx_ALT_SCI_TLM_MID in APID 1254, 1264, 1274 sequence flag 01 (once per major frame). (see ICESat-2-MEB-SPEC-0875, section 5.12, Spacewire: Major Frame Packet Data Format data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) photons delta_time 7686010 delta_time /atlas/pce2/altimetry/weak/photons/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The Time of Day for the specific Transmit (TX) pulse associated with the Received (RX) event. (see L1B ATBD section 5 time of flight), relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ph_id_count /atlas/pce2/altimetry/weak/photons/delta_time long_name String photon event counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String photon event counter is part of photon ID and will count from 1 for each channel until reset by laser pulse counter. If ph_id_count is 0, then there was a transmit pulse without any received photons. In this case, the transmit portion of the alt_science packet is valid, but the receive portion is all 0s and should not be used. coordinates String delta_time ph_tof /atlas/pce2/altimetry/weak/photons/delta_time long_name String Time of Flight source String ATL02 ATBD contentType String physicalMeasurement description String Time of flight (TOF); the round trip time in seconds of the received photon relative to the beam's zero range point (ZRP). Computed from the Transmit (Tx) and Receive (Rx) Time-of-flight components and then calibrated to the centroid of the transmit pulse. coordinates String delta_time units String seconds tx_other_tof /atlas/pce2/altimetry/weak/photons/delta_time long_name String Other Transmit Time from LL units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Time of flight from the PCE-specific leading-lower (LL) threshold (tx_ll_tof) to the detected other transmit pulse edge. For PCE1, this is the time from the PCE1 LL to the Transmit Leading Upper edge (LU) threshold; for PCE2, this is the time from the PCE2 LL to the Transmit Trailing Upper edge (TU) threshold; and for PCE3, this is the time from the PCE3 LL to the Transmit Trailing Lower edge (TL) threshold. coordinates String delta_time ph_id_pulse /atlas/pce2/altimetry/weak/photons/delta_time long_name String laser pulse counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String laser pulse counter is part of photon ID and will count from 1 to 200 and reset for each new major frame (major_fram_id). If the corresponding ph_id_count is 0, then there was a transmit pulse without any received photons. coordinates String delta_time rx_band_id /atlas/pce2/altimetry/weak/photons/delta_time long_name String rx downlink band id units String counts source String ATL01/atlas/pcex/a_alt_science_ph RX data valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Flag to indicate downlink band id associated with the received rx_tof (received photon event). A value of 0 indicates the photon corresponds to band1; A value of 1 indicates the photon corresponds to band2. Corresponding parameters are band_width, band_offset and band_eventcount. coordinates String delta_time flag_meanings String band1 band2 flag_values Int8 0 1 ph_id_channel /atlas/pce2/altimetry/weak/photons/delta_time long_name String Receive channel id units String 1 source String Derived as part of Photon ID valid_min Byte 1 valid_max Byte 120 contentType String referenceInformation description String Channel number assigned for each received photon event. This is part of the photon ID. Values range from 1 to 120 to span all channels and rise/fall edges. Values 1 to 60 are for falling edge; PCE1 (1 to 20), PCE 2 (21 to 40) and PCE3 (41 to 60). Values 61 to 120 are for rising edge; PCE1 (61 to 80), PCE 2 (81 to 100) and PC3 (101 to 120). coordinates String delta_time tx_ll_tof /atlas/pce2/altimetry/weak/photons/delta_time long_name String Transmit LL time from T0 units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Transmit (Tx) Leading Lower (LL) time of flight (TOF); the round trip time in seconds from the detected lower leading edge of the transmit pulse relative to the ATLAS T0. Includes all calibrations of coarse and fine counts. coordinates String delta_time tof_flag /atlas/pce2/altimetry/weak/photons/delta_time long_name String TOF Flag units String counts source String L1B ATBD Sect 2.5.4 valid_min Int8 1 valid_max Int8 18 contentType String referenceInformation description String Time Of Flight center correction flag. Values indicate what components were used to adjust the TOF to the centroid of the Tx pulse, based on the alignment of Tx components across all 3 PCEs. 1=LL_LU_TU_TL; 2=LL_TU_TL; 3=LL_LU_TL; 4=LL_LU_TU; 5=LL_TL; 6=LL_TU; 7=LL_LU; 8=LL. Values greater than 10 indicate the same sequence of conditions indicated for a potential TEP photon. coordinates String delta_time flag_meanings String LL_LU_TU_TL LL_TU_TL LL_LU_TL LL_LU_TU LL_TL LL_TU LL_LU LL TEP_LL_LU_TU_TL TEP_LL_TU_TL TEP_LL_LU_TL TEP_LL_LU_TU TEP_LL_TL TEP_LL_TU TEP_LL_LU TEP_LL flag_values Int8 1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 pce_mframe_cnt /atlas/pce2/altimetry/weak/photons/delta_time long_name String PCE Major frame counter units String counts source String Retained from latest a_alt_science packet contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Group contains the PCE Altimetric received photon event (ph) decommutated data and its matching Transmit time tag data. Note the Transmit time tag data are repeated for each received photon event. Data is from Altimetry Science Packet (alt_sci_tlm) APID 1254, 1264, 1274 with Sequence Flag = 0 or 2. See ICESat-2-MEB-SPEC-0875, section 5.12, SPACEWIRE: TIME TAG SCIENCE DATA FORMAT data_rate String Data within this group are stored at the data rate of the source photon events. (varies by detection; nominal value is sixty thousand per second, derived from laser_rate * photons_per_shot * beams_per_pce; where laser_rate=10000, photons_per_shot=3, beams_per_pce=2.) strong band2_width /atlas/pce2/altimetry/delta_time long_name String Band2 Width units String seconds source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band2. coordinates String ../delta_time band1_offset /atlas/pce2/altimetry/delta_time long_name String Band1 Offset source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band1. coordinates String ../delta_time units String seconds band1_width /atlas/pce2/altimetry/delta_time long_name String Band1 Width source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band1. coordinates String ../delta_time units String seconds alt_rw_width /atlas/pce2/altimetry/delta_time long_name String Altimetric Range Window Width units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds from the range window start and range window stop coordinates String ../delta_time hist /atlas/pce2/altimetry/delta_time /atlas/pce2/altimetry/ds_hist long_name String Center-aligned TOF Histogram units String counts source String ATL02 contentType String qualityInformation description String Per-major frame, peak-aligned, windowed time-of-flight histograms. coordinates String ../ds_hist ../delta_time alt_rw_start /atlas/pce2/altimetry/delta_time long_name String Altimetric Range Window Start units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds between the transmit pulse and the start of the altimetric range window for the beam coordinates String ../delta_time band2_offset /atlas/pce2/altimetry/delta_time long_name String Band2 Offset units String seconds source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band2. coordinates String ../delta_time n_mf_ph /atlas/pce2/altimetry/delta_time long_name String Number of photons units String counts source String Derived contentType String auxiliaryInformation description String Number of photons within each major frame. coordinates String ../delta_time ph_ndx_beg /atlas/pce2/altimetry/delta_time long_name String Photon Index Begin units String counts source String Derived contentType String auxiliaryInformation description String Index (1-based) within the photon-rate data of the first photon within each major frame. coordinates String ../delta_time Description String The PCE Altimetry Science Packet specific to a beam (PCEx_ALT_SCI_TLM_MID in APID 1254, 1264, 1274 sequence flag 01 (once per major frame). (see ICESat-2-MEB-SPEC-0875, section 5.12, Spacewire: Major Frame Packet Data Format data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) photons delta_time 9380394 delta_time /atlas/pce2/altimetry/strong/photons/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The Time of Day for the specific Transmit (TX) pulse associated with the Received (RX) event. (see L1B ATBD section 5 time of flight), relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ph_id_count /atlas/pce2/altimetry/strong/photons/delta_time long_name String photon event counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String photon event counter is part of photon ID and will count from 1 for each channel until reset by laser pulse counter. If ph_id_count is 0, then there was a transmit pulse without any received photons. In this case, the transmit portion of the alt_science packet is valid, but the receive portion is all 0s and should not be used. coordinates String delta_time ph_tof /atlas/pce2/altimetry/strong/photons/delta_time long_name String Time of Flight source String ATL02 ATBD contentType String physicalMeasurement description String Time of flight (TOF); the round trip time in seconds of the received photon relative to the beam's zero range point (ZRP). Computed from the Transmit (Tx) and Receive (Rx) Time-of-flight components and then calibrated to the centroid of the transmit pulse. coordinates String delta_time units String seconds tx_other_tof /atlas/pce2/altimetry/strong/photons/delta_time long_name String Other Transmit Time from LL units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Time of flight from the PCE-specific leading-lower (LL) threshold (tx_ll_tof) to the detected other transmit pulse edge. For PCE1, this is the time from the PCE1 LL to the Transmit Leading Upper edge (LU) threshold; for PCE2, this is the time from the PCE2 LL to the Transmit Trailing Upper edge (TU) threshold; and for PCE3, this is the time from the PCE3 LL to the Transmit Trailing Lower edge (TL) threshold. coordinates String delta_time ph_id_pulse /atlas/pce2/altimetry/strong/photons/delta_time long_name String laser pulse counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String laser pulse counter is part of photon ID and will count from 1 to 200 and reset for each new major frame (major_fram_id). If the corresponding ph_id_count is 0, then there was a transmit pulse without any received photons. coordinates String delta_time rx_band_id /atlas/pce2/altimetry/strong/photons/delta_time long_name String rx downlink band id units String counts source String ATL01/atlas/pcex/a_alt_science_ph RX data valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Flag to indicate downlink band id associated with the received rx_tof (received photon event). A value of 0 indicates the photon corresponds to band1; A value of 1 indicates the photon corresponds to band2. Corresponding parameters are band_width, band_offset and band_eventcount. coordinates String delta_time flag_meanings String band1 band2 flag_values Int8 0 1 ph_id_channel /atlas/pce2/altimetry/strong/photons/delta_time long_name String Receive channel id units String 1 source String Derived as part of Photon ID valid_min Byte 1 valid_max Byte 120 contentType String referenceInformation description String Channel number assigned for each received photon event. This is part of the photon ID. Values range from 1 to 120 to span all channels and rise/fall edges. Values 1 to 60 are for falling edge; PCE1 (1 to 20), PCE 2 (21 to 40) and PCE3 (41 to 60). Values 61 to 120 are for rising edge; PCE1 (61 to 80), PCE 2 (81 to 100) and PC3 (101 to 120). coordinates String delta_time tx_ll_tof /atlas/pce2/altimetry/strong/photons/delta_time long_name String Transmit LL time from T0 units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Transmit (Tx) Leading Lower (LL) time of flight (TOF); the round trip time in seconds from the detected lower leading edge of the transmit pulse relative to the ATLAS T0. Includes all calibrations of coarse and fine counts. coordinates String delta_time tof_flag /atlas/pce2/altimetry/strong/photons/delta_time long_name String TOF Flag units String counts source String L1B ATBD Sect 2.5.4 valid_min Int8 1 valid_max Int8 18 contentType String referenceInformation description String Time Of Flight center correction flag. Values indicate what components were used to adjust the TOF to the centroid of the Tx pulse, based on the alignment of Tx components across all 3 PCEs. 1=LL_LU_TU_TL; 2=LL_TU_TL; 3=LL_LU_TL; 4=LL_LU_TU; 5=LL_TL; 6=LL_TU; 7=LL_LU; 8=LL. Values greater than 10 indicate the same sequence of conditions indicated for a potential TEP photon. coordinates String delta_time flag_meanings String LL_LU_TU_TL LL_TU_TL LL_LU_TL LL_LU_TU LL_TL LL_TU LL_LU LL TEP_LL_LU_TU_TL TEP_LL_TU_TL TEP_LL_LU_TL TEP_LL_LU_TU TEP_LL_TL TEP_LL_TU TEP_LL_LU TEP_LL flag_values Int8 1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 pce_mframe_cnt /atlas/pce2/altimetry/strong/photons/delta_time long_name String PCE Major frame counter units String counts source String Retained from latest a_alt_science packet contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Group contains the PCE Altimetric received photon event (ph) decommutated data and its matching Transmit time tag data. Note the Transmit time tag data are repeated for each received photon event. Data is from Altimetry Science Packet (alt_sci_tlm) APID 1254, 1264, 1274 with Sequence Flag = 0 or 2. See ICESat-2-MEB-SPEC-0875, section 5.12, SPACEWIRE: TIME TAG SCIENCE DATA FORMAT data_rate String Data within this group are stored at the data rate of the source photon events. (varies by detection; nominal value is sixty thousand per second, derived from laser_rate * photons_per_shot * beams_per_pce; where laser_rate=10000, photons_per_shot=3, beams_per_pce=2.) atmosphere_s delta_time 10575 ds_hist_bin_index 467 delta_time /atlas/pce2/atmosphere_s/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_hist_bin_index /atlas/pce2/atmosphere_s/ds_hist_bin_index long_name String DS for ATM histogram bins units String 1 source String Dimension Scale valid_min Int16 1 valid_max Int16 467 contentType String referenceInformation description String Dimension scale for atmosphere histogram bins. atm_shift_amount /atlas/pce2/atmosphere_s/delta_time units String counts long_name String Atmospheric Range Window Shift source String ATL01/atlas/pcex/a_atm_hist_x and L1B ATBD section ATM contentType String referenceInformation description String The number of bins the range window start of one of the histograms was shifted to align them before they are added together. coordinates String delta_time atm_rw_start /atlas/pce2/atmosphere_s/delta_time long_name String Atmospheric Range Window Start units String seconds source String ATL01/atlas/pcex/a_atm_hist_x and L1B ATBD section ATM contentType String referenceInformation description String The number of seconds between the transmit pulse and the start of the Atmospheric range window coordinates String delta_time atm_rw_width /atlas/pce2/atmosphere_s/delta_time long_name String Atmospheric Range Window Width units String seconds source String ATL01/atlas/pcex/a_atm_hist_x and L1B ATBD section ATM contentType String referenceInformation description String The number of seconds from the Atmospheric range window start and range window stop. coordinates String delta_time pce_mframe_cnt /atlas/pce2/atmosphere_s/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_atm_hist_x contentType String referenceInformation description String Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time atm_bins /atlas/pce2/atmosphere_s/delta_time /atlas/pce2/atmosphere_s/ds_hist_bin_index long_name String Atmospheric Science Histogram units String counts source String ATL01/atlas/pcex/a_atm_hist_x contentType String referenceInformation description String The histogram bins for the Atmospheric beam.Once every 400 shots ( laser pulses). Bin 1 (clouds) is nearest to spacecraft .Bin 467 is under ground. coordinates String delta_time useflag /atlas/pce2/atmosphere_s/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DODS_EXTRA Container Unlimited_Dimension String delta_time ds_hist_bin_index Description String Contains parameters relating to the PCE Atmospheric Data Histograms. Normally 25 hz. (APID 1255, 1259, 1265, 1269, 1275, 1279). P1 S,P1 W, P2 S, P2 W, P3 S, P3 W. data_rate String Data in this group is stored at a 25hz (25 per second) rate. pmf_hk delta_time 423 delta_time /atlas/pce2/pmf_hk/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. autorestartdfccount /atlas/pce2/pmf_hk/delta_time long_name String AutoRestartDFCCount units String counts source String APID 1073, 1089, 1105 Byte 0090-0091 contentType String referenceInformation description String Number of DFC Auto Restarts coordinates String delta_time cmd_err_cntr /atlas/pce2/pmf_hk/delta_time long_name String cmd_err_cntr units String counts source String APID 1073, 1089, 1105 Byte 0012-0012 contentType String referenceInformation description String Command error counter coordinates String delta_time cmd_suc_cntr /atlas/pce2/pmf_hk/delta_time long_name String cmd_suc_cntr units String counts source String APID 1073, 1089, 1105 Byte 0013-0013 contentType String referenceInformation description String Command success counter. coordinates String delta_time activeknobstable /atlas/pce2/pmf_hk/delta_time long_name String ActiveKnobsTable units String counts source String APID 1073, 1089, 1105 Byte 0037-0037 contentType String referenceInformation description String The active knobs table. coordinates String delta_time mode /atlas/pce2/pmf_hk/delta_time long_name String Mode units String counts source String APID 1073, 1089, 1105 Byte 0036-0036 valid_min Byte 0 valid_max Byte 5 contentType String referenceInformation description String PCE Mode. 0=STBY; 1=Science; 2=Test; 3=Manual; 4=Radio; 5=Unknown coordinates String delta_time flag_meanings String STBY Science Test Manual Radio Test flag_values Byte 0 1 2 3 4 5 DODS_EXTRA Container Unlimited_Dimension String delta_time Description String PCE Diagnostic Telemetry Packet from one of the following APIDs : 1073, 1089, 1105 (each APID is associated with a specific PCE). Packet Frequency is 1 Hertz. sxp_ssr_w delta_time 423 ds_50samples 50 delta_time /atlas/pce2/sxp_ssr_w/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_50samples /atlas/pce2/sxp_ssr_w/ds_50samples long_name String DS for 50 bytes units String 1 source String ATL01/atlas/pcex/a_sxp_ssr valid_min Int8 1 valid_max Int8 50 contentType String referenceInformation description String Dimension scale for an array of 50 samples. coordinates String delta_time latitude longitude latitude /atlas/pce2/sxp_ssr_w/delta_time /atlas/pce2/sxp_ssr_w/ds_50samples long_name String latitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Latitude coordinates String delta_time longitude /atlas/pce2/sxp_ssr_w/delta_time /atlas/pce2/sxp_ssr_w/ds_50samples long_name String longitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Longitude coordinates String delta_time mf_cosz /atlas/pce2/sxp_ssr_w/delta_time long_name String First Major Frame cosZ units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the solar zenith angle coordinates String delta_time latitude longitude pce_mframe_cnt /atlas/pce2/sxp_ssr_w/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. coordinates String delta_time latitude longitude cosb /atlas/pce2/sxp_ssr_w/delta_time /atlas/pce2/sxp_ssr_w/ds_50samples long_name String cosB units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the off-nadir angle as calculated onboard from the spacecraft information coordinates String delta_time latitude longitude srm /atlas/pce2/sxp_ssr_w/delta_time /atlas/pce2/sxp_ssr_w/ds_50samples long_name String srm units String 1 source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Surface type, vegetation and coastline information from the SRM. (bit 0-1 = surface type (0=ocean, 1=land, 2=sea ice, 3=land ice). Bit 2 = vegetation present, Bit 3 = coastline present) coordinates String delta_time latitude longitude DODS_EXTRA Container Unlimited_Dimension String delta_time ds_50samples Description String SBC Extrapolation Task telemetry containing Flight Science Receiver Algorithm team requested telemetry for the first set of PCE extrapolation data for a major frame.: lat, long, range, nadir angle, etc. (from APIDs 1152 thru 1157) background delta_time 84600 delta_time /atlas/pce2/background/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the 50 laser pulses used for background, in seconds relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. coordinates String delta_time bg_cnt_50shot_w /atlas/pce2/background/delta_time long_name String Weak background counts units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w indicates for the beam the # of counted time tags (BackgroundCounts_50Shot) during the range windows associated with a set of 50 laser pulses of the major frame. coordinates String delta_time bg_cnt_50shot_s /atlas/pce2/background/delta_time units String counts long_name String Strong background counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w indicates for the beam the # of counted time tags (BackgroundCounts_50Shot) during the range windows associated with a set of 50 laser pulses of the major frame. coordinates String delta_time pce_mframe_cnt /atlas/pce2/background/delta_time long_name String PCE Major frame counter units String counts source String Derived contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time useflag /atlas/pce2/background/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DODS_EXTRA Container Unlimited_Dimension String delta_time Description String The background data is specific to each beam and reported at a 50-shot rate. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) pce1 Description String Group contains the Photon Counting Electronics x (PCEx) packet decommutated data data_rate String Data within this group are stored at the data rate of the source PCE Data Packets. (nominally fifty per second.) sxp_ssr_s delta_time 423 ds_50samples 50 delta_time /atlas/pce1/sxp_ssr_s/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_50samples /atlas/pce1/sxp_ssr_s/ds_50samples long_name String DS for 50 bytes units String 1 source String ATL01/atlas/pcex/a_sxp_ssr valid_min Int8 1 valid_max Int8 50 contentType String referenceInformation description String Dimension scale for an array of 50 samples. coordinates String delta_time latitude longitude latitude /atlas/pce1/sxp_ssr_s/delta_time /atlas/pce1/sxp_ssr_s/ds_50samples long_name String latitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Latitude coordinates String delta_time longitude /atlas/pce1/sxp_ssr_s/delta_time /atlas/pce1/sxp_ssr_s/ds_50samples long_name String longitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Longitude coordinates String delta_time mf_cosz /atlas/pce1/sxp_ssr_s/delta_time long_name String First Major Frame cosZ units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the solar zenith angle coordinates String delta_time latitude longitude pce_mframe_cnt /atlas/pce1/sxp_ssr_s/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. coordinates String delta_time latitude longitude cosb /atlas/pce1/sxp_ssr_s/delta_time /atlas/pce1/sxp_ssr_s/ds_50samples long_name String cosB units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the off-nadir angle as calculated onboard from the spacecraft information coordinates String delta_time latitude longitude srm /atlas/pce1/sxp_ssr_s/delta_time /atlas/pce1/sxp_ssr_s/ds_50samples long_name String srm units String 1 source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Surface type, vegetation and coastline information from the SRM. (bit 0-1 = surface type (0=ocean, 1=land, 2=sea ice, 3=land ice). Bit 2 = vegetation present, Bit 3 = coastline present) coordinates String delta_time latitude longitude DODS_EXTRA Container Unlimited_Dimension String delta_time ds_50samples Description String SBC Extrapolation Task telemetry containing Flight Science Receiver Algorithm team requested telemetry for the first set of PCE extrapolation data for a major frame.: lat, long, range, nadir angle, etc. (from APIDs 1152 thru 1157) dfc_hk delta_time 21150 delta_time /atlas/pce1/dfc_hk/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. alt_last_seq_count /atlas/pce1/dfc_hk/delta_time long_name String last sequence packet count units String counts source String APID 1072, 1088, 1104 Byte 0060-0061 contentType String referenceInformation description String CCSDS Packet Sequence Count value of the last downlink packet prior to the major frame. This should be the last packet associated with the previous major frame. That packet should contain the last Tx/RX data for the last shot of the previous major frame. (not EU-converted) coordinates String delta_time alt_rw_start_reg_w /atlas/pce1/dfc_hk/delta_time long_name String Altimetric Weak Range Window Start Reg units String counts source String APID 1072, 1088, 1104 Byte 0086-0088 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the altimetric range window for the weak spot. (not EU-converted) coordinates String delta_time alt_t0_cnt /atlas/pce1/dfc_hk/delta_time long_name String T0 counter units String counts source String APID 1072, 1088, 1104 Byte 0028-0029 contentType String referenceInformation description String ATLAS flight s/w T0 counter that clears with 1PPS (not EU-converted) coordinates String delta_time alt_spw_not_ready_cnt /atlas/pce1/dfc_hk/delta_time long_name String SpW Not Ready Counter units String counts source String APID 1072, 1088, 1104 Byte 0115 contentType String referenceInformation description String Counts each time SpW causes DFC to wait to transmit data to back-end (Status Only) (not EU-converted) coordinates String delta_time alt_sci_seg_limit /atlas/pce1/dfc_hk/delta_time long_name String Science Data Segment Limit Size units String counts source String APID 1072, 1088, 1104 Byte 0069-0070 contentType String referenceInformation description String Science Data Segment Limit Size ; initialization Value (not EU-converted) coordinates String delta_time alt_rw_start_reg_s /atlas/pce1/dfc_hk/delta_time long_name String Altimetric Strong Range Window Start Reg units String counts source String APID 1072, 1088, 1104 Byte 0076-0078 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the altimetric range window for the strong spot (not EU-converted) coordinates String delta_time alt_spot_tag_cnts_s 21150 4 long_name String strong spot tag counter units String counts source String APID 1072, 1088, 1104 Byte 0034-0041 contentType String referenceInformation description String The number of events received by the DFC on channels 1 through 16 summed over 50 range window openings. The four elements of the array correspond to dividing the major frame up into 50 shots. The last element of the array can be 49 or 51 shots depending on the alignment of the range windows with respect to the major frame. Note that these counts are time tag counts and are subject to all the limitations and behaviors associated with time tags (duplicates, FIFO overflows, etc.). (not EU-converted) coordinates String delta_time alt_rw_width_reg_s /atlas/pce1/dfc_hk/delta_time long_name String Altimetric Strong Range Window Width Reg units String counts source String APID 1072, 1088, 1104 Byte 0079-0080 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the range window start and range window stop for the strong spot. (not EU-converted) coordinates String delta_time alt_spot_tag_cnts_w 21150 4 long_name String weak spot tag counter units String counts source String APID 1072, 1088, 1104 Byte 0042-48 contentType String referenceInformation description String The number of events received by the DFC on channels 17 through 20 summed over 50 range window openings. The four elements of the array correspond to dividing the major frame up into 50 shots. The last element of the array can be 49 or 51 shots depending on the alignment of the range windows with respect to the major frame. Note that these counts are time tag counts and are subject to all the limitations and behaviors associated with time tags (duplicates, FIFO overflows, etc.). (not EU-converted) coordinates String delta_time alt_cmd_count /atlas/pce1/dfc_hk/delta_time long_name String Command Counter units String counts source String APID 1072, 1088, 1104 Byte 0062-0063 contentType String referenceInformation description String Command Counter; Indicates the number of good commands received by the DFC prior to the Major Frame Packet being transmitted (not EU-converted) coordinates String delta_time alt_gp_reg 21150 2 long_name String General Purpose Register units String counts source String APID 1072, 1088, 1104 Byte 0100-0101 contentType String referenceInformation description String General Purpose Register (not EU-converted) coordinates String delta_time tx_leading_coarse /atlas/pce1/dfc_hk/delta_time long_name String tx latest leading edge coarse units String counts source String APID 1072, 1088, 1104 Byte 0054-0056 contentType String referenceInformation description String Latest Leading Start Time Tag-acquired leading start time tag value (paired with trailing start time time tag value) coarse time in counts (not EU-converted) coordinates String delta_time alt_dfc_hk_status 21150 5 source String APID 1072, 1088, 1104 Byte 0106-0110 contentType String referenceInformation description String DFC Housekeeping Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12 (not EU-converted) coordinates String delta_time long_name String DFC Housekeeping Status Bits units String counts alt_write_watchdog /atlas/pce1/dfc_hk/delta_time long_name String Tag write watchdog value units String counts source String APID 1072, 1088, 1104 Byte 0072-0073 contentType String referenceInformation description String Tag write watchdog value ; initialization Value (not EU-converted) coordinates String delta_time atm_rw_start_reg_s /atlas/pce1/dfc_hk/delta_time long_name String Atmospheric Strong Range Window Start Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0081-0083 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the Atmospheric range window for the strong spot. (not EU-converted) coordinates String delta_time alt_dupe_margin /atlas/pce1/dfc_hk/delta_time long_name String Duplicate time tag removal units String counts source String APID 1072, 1088, 1104 Byte 0066-0067 contentType String referenceInformation description String Duplicate time tag removal ; initialization Value (not EU-converted) coordinates String delta_time tx_trailing_cell /atlas/pce1/dfc_hk/delta_time long_name String tx latest trailing edge fine units String counts source String APID 1072, 1088, 1104 Byte 0057-0059 contentType String referenceInformation description String Latest trailing Start Time Tag-acquired trailing start time tag value (paired with trailing start time time tag value) cell counts (not EU-converted) coordinates String delta_time atm_rw_width_reg_w /atlas/pce1/dfc_hk/delta_time long_name String Atmospheric Weak Range Window Width Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0094-0095 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the Atmospheric range window start and range window stop for the weak spot. (not EU-converted) coordinates String delta_time alt_mframe_freq /atlas/pce1/dfc_hk/delta_time long_name String Major frame frequency units String counts source String APID 1072, 1088, 1104 Byte 0074 contentType String referenceInformation description String The number of shots per major frame. (not EU-converted) coordinates String delta_time alt_debug_status 21150 3 long_name String Debug Status Bits units String counts source String APID 1072, 1088, 1104 Byte 0112-0114 contentType String referenceInformation description String Debug Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12. (not EU-converted) coordinates String delta_time alt_config /atlas/pce1/dfc_hk/delta_time long_name String Configuration units String counts source String APID 1072, 1088, 1104 Byte 0075 contentType String referenceInformation description String Configuration bits (not EU-converted) coordinates String delta_time tx_trailing_coarse /atlas/pce1/dfc_hk/delta_time long_name String tx latest trailing edge coarse units String counts source String APID 1072, 1088, 1104 Byte 0057-0059 contentType String referenceInformation description String Latest trailing Start Time Tag-acquired trailing start time tag value (paired with trailing start time time tag value) coarse time in counts (not EU-converted) coordinates String delta_time alt_sci_addr /atlas/pce1/dfc_hk/delta_time long_name String Logical address for science data transmit units String counts source String APID 1072, 1088, 1104 Byte 0065 contentType String referenceInformation description String Logical address for science data transmit ; initialization Value (not EU-converted) coordinates String delta_time alt_wait_watchdog /atlas/pce1/dfc_hk/delta_time long_name String Tag wait watchdog value units String counts source String APID 1072, 1088, 1104 Byte 0071 contentType String referenceInformation description String Tag wait watchdog value ; initialization Value (not EU-converted) coordinates String delta_time tx_leading_cell /atlas/pce1/dfc_hk/delta_time long_name String tx latest leading edge fine units String counts source String APID 1072, 1088, 1104 Byte 0054-0056 contentType String referenceInformation description String Latest Leading Start Time Tag-acquired leading start time tag value (paired with trailing start time time tag value) cell counts (not EU-converted) coordinates String delta_time atm_rw_start_reg_w /atlas/pce1/dfc_hk/delta_time long_name String Atmospheric Weak Range Window Start Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0091-0093 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the Atmospheric range window for the weak spot. (not EU-converted) coordinates String delta_time atm_rw_width_reg_s /atlas/pce1/dfc_hk/delta_time long_name String Atmospheric Strong Range Window Width Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0084-0085 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the Atmospheric range window start and range window stop for the strong spot. (not EU-converted) coordinates String delta_time alt_imet_at_1pps /atlas/pce1/dfc_hk/delta_time long_name String IMET at 1 pps units String counts source String APID 1072, 1088, 1104 Byte 0016-0021 contentType String referenceInformation description String ATLAS flight s/w 25 MHz IMET counter value when 1PPS is received (not EU-converted) coordinates String delta_time alt_debug_reg 21150 4 long_name String Debug Control Register units String counts source String APID 1072, 1088, 1104 Byte 0096-0099 contentType String referenceInformation description String Debug Control Register (not EU-converted) coordinates String delta_time alt_cal_interval /atlas/pce1/dfc_hk/delta_time long_name String Calibration request interval from TDC units String counts source String APID 1072, 1088, 1104 Byte 0068 contentType String referenceInformation description String Calibration request interval from TDC (not EU-converted) coordinates String delta_time alt_edac_status 21150 4 long_name String EDAC Status Bits units String counts source String APID 1072, 1088, 1104 Byte 102-105 contentType String referenceInformation description String EDAC Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12 (not EU-converted) coordinates String delta_time alt_cal_rise /atlas/pce1/dfc_hk/delta_time units String counts long_name String Altimetric Latest Calibration Rising source String APID 1072, 1088, 1104 Byte 0050-0051 contentType String referenceInformation description String The PCE latest calibration value for the rising edge (not EU-converted) coordinates String delta_time pce_mframe_cnt /atlas/pce1/dfc_hk/delta_time long_name String PCE Major frame counter units String counts source String APID 1072, 1088, 1104 Byte 0030-0033 contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time alt_imet_at_first_t0 /atlas/pce1/dfc_hk/delta_time long_name String IMET at first T0 after 1 pps units String counts source String APID 1072, 1088, 1104 Byte 0022-0027 contentType String referenceInformation description String ATLAS flight s/w 25 MHz IMET counter value when 1PPS is received (not EU-converted) coordinates String delta_time alt_last_opcode /atlas/pce1/dfc_hk/delta_time long_name String Last Opcode Received units String counts source String APID 1072, 1088, 1104 Byte 0064 contentType String referenceInformation description String Indicates the last good opcode received prior to the Major Frame Packet being transmitted; 0xFF indicates an error condition of either protocol ID mismatch, invalid opcode, or invalid length (not EU-converted) coordinates String delta_time alt_rw_width_reg_w /atlas/pce1/dfc_hk/delta_time long_name String Altimetric Weak Range Window Width Reg units String counts source String APID 1072, 1088, 1104 Byte 0089-0090 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the range window start and range window stop for the weak spot. (not EU-converted) coordinates String delta_time alt_1pps_count /atlas/pce1/dfc_hk/delta_time long_name String MET 1pps counter units String counts source String APID 1072, 1088, 1104 Byte 0012-0015 contentType String referenceInformation description String ATLAS flight s/w 1PPS counter (not EU-converted) coordinates String delta_time alt_dfc_status /atlas/pce1/dfc_hk/delta_time long_name String DFC Status Bits units String counts source String APID 1072, 1088, 1104 Byte 0111 contentType String referenceInformation description String DFC Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12 (not EU-converted) coordinates String delta_time alt_cal_fall /atlas/pce1/dfc_hk/delta_time long_name String Altimetric Latest Calibration Falling units String counts source String APID 1072, 1088, 1104 Byte 0052-0053 contentType String referenceInformation description String The PCE latest calibration value for the falling edge. (not EU-converted) coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String This DFCx_hk is a diagnostic packet (APID 1072, 1088, 1104) that contains some of the parameters normally part of APID 1254, 1264, 1274 (as sequence flag 01). Also know as the PCE Altimetric Science Data Major Frame described in ICESat-2-MEB-SPEC-0875, section 5.13 Table 19. The data in the group are neither calibrated nor EU-converted, but preserved from ATL01 in order provided diagnostics for TOF processing. data_rate String Data within this group are stored at the data rate of the source APID (nominally 50 Hz). algorithm_science delta_time 21150 ds_4bytes 4 ds_2samples 2 ds_2samples /atlas/pce1/algorithm_science/ds_2samples long_name String DS for 2 bytes units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 2 contentType String referenceInformation description String Dimension scale for an array of 2 samples. ds_4bytes /atlas/pce1/algorithm_science/ds_4bytes long_name String DS for 4 bytes units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 4 contentType String referenceInformation description String Dimension scale for an array of 4 bytes. delta_time /atlas/pce1/algorithm_science/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. gps_time /atlas/pce1/algorithm_science/delta_time long_name String GPS seconds at the Major Frame units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String GPS seconds at the Major Frame coordinates String delta_time alt_band_mask /atlas/pce1/algorithm_science/delta_time /atlas/pce1/algorithm_science/ds_4bytes long_name String Band Mask units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Band Mask. Each byte corresponds to a single Band, in the order of 1-4. coordinates String delta_time amet_time /atlas/pce1/algorithm_science/delta_time long_name String AMET seconds at the Major Frame units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String AMET seconds at the Major Frame coordinates String delta_time useflag /atlas/pce1/algorithm_science/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 alt_band_channel_mask /atlas/pce1/algorithm_science/delta_time /atlas/pce1/algorithm_science/ds_4bytes long_name String Band Channel Mask units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Band Channel Mask. (Bands 1-4) coordinates String delta_time pce_mframe_cnt /atlas/pce1/algorithm_science/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. coordinates String delta_time alt_nbands /atlas/pce1/algorithm_science/delta_time long_name String Number of bands units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Number of bands. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_4bytes ds_2samples Description String The PCE PMF Algorithm Science data group. Contains outputs from the onboard receiver algorithm software. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) weak alt_error_flags /atlas/pce1/algorithm_science/delta_time /atlas/pce1/algorithm_science/ds_2samples source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String FSW error flags coordinates String ../delta_time long_name String Error Flags units String counts daynight_flag /atlas/pce1/algorithm_science/delta_time long_name String Day/Night flag units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science valid_min Byte 0 valid_max Byte 1 contentType String referenceInformation description String ATLAS flight software Day/Night Flag associated with the major frame. 0= day, 1 =night. Based on an algorithm determination of the background rate, not on the actual position of the sun. coordinates String ../delta_time flag_meanings String day night flag_values Byte 0 1 decisionflags /atlas/pce1/algorithm_science/delta_time /atlas/pce1/algorithm_science/ds_4bytes long_name String Decision Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w Decision Flags associated with the major frame. indication if there was an error or if no science data is sent and why coordinates String ../delta_time flywheel /atlas/pce1/algorithm_science/delta_time long_name String Flywheel units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Flywheel associated with the major frame. coordinates String ../delta_time signalflags /atlas/pce1/algorithm_science/delta_time long_name String Signal Found Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w signal event flags associated with the major frame. coordinates String ../delta_time Description String The PCE PMF Algorithm Science data group. Contains outputs from the onboard receiver algorithm software. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) strong alt_error_flags /atlas/pce1/algorithm_science/delta_time /atlas/pce1/algorithm_science/ds_2samples source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String FSW error flags coordinates String ../delta_time long_name String Error Flags units String counts daynight_flag /atlas/pce1/algorithm_science/delta_time long_name String Day/Night flag units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science valid_min Byte 0 valid_max Byte 1 contentType String referenceInformation description String ATLAS flight software Day/Night Flag associated with the major frame. 0= day, 1 =night. Based on an algorithm determination of the background rate, not on the actual position of the sun. coordinates String ../delta_time flag_meanings String day night flag_values Byte 0 1 decisionflags /atlas/pce1/algorithm_science/delta_time /atlas/pce1/algorithm_science/ds_4bytes long_name String Decision Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w Decision Flags associated with the major frame. indication if there was an error or if no science data is sent and why coordinates String ../delta_time flywheel /atlas/pce1/algorithm_science/delta_time long_name String Flywheel units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Flywheel associated with the major frame. coordinates String ../delta_time signalflags /atlas/pce1/algorithm_science/delta_time long_name String Signal Found Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w signal event flags associated with the major frame. coordinates String ../delta_time Description String The PCE PMF Algorithm Science data group. Contains outputs from the onboard receiver algorithm software. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) altimetry delta_time 21150 ds_weak_channel_index 4 ds_strong_channel_index 16 ds_hist 199 ds_hist /atlas/pce1/altimetry/ds_hist long_name String Histogram Dimension Scale units String seconds source String ATL02 contentType String referenceInformation description String Relative bin values of windowed, peak-centered TOF histograms. Peak value = 0 delta_time /atlas/pce1/altimetry/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_strong_channel_index /atlas/pce1/altimetry/ds_strong_channel_index long_name String DS for Strong Channels units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 16 contentType String referenceInformation description String Dimension scale for strong channels. ds_weak_channel_index /atlas/pce1/altimetry/ds_weak_channel_index long_name String DS for Weak Channels units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 4 contentType String referenceInformation description String Dimension scale for weak channels. ch_mask_s /atlas/pce1/altimetry/delta_time /atlas/pce1/altimetry/ds_strong_channel_index long_name String Channel Mask Strong units String counts source String ATL01/atlas/pcex/a_alt_science contentType String referenceInformation description String Channel Mask for DLBOs. The 16 flags are a logical OR of the two band offset masks for strong beam coordinates String delta_time cal_rise_sm /atlas/pce1/altimetry/delta_time long_name String Altimetric Latest Calibration Rising units String seconds/cell source String Derived via L1B ATBD contentType String referenceInformation description String The smoothed, calibrated value for the rising edge used to convert cell counts to units of time. time per cell count based on USO for each PCE. coordinates String delta_time cal_fall_sm /atlas/pce1/altimetry/delta_time long_name String Altimetric Latest Calibration Falling units String seconds/cell source String Derived via L1B ATBD contentType String referenceInformation description String The smoothed, calibrated value for the falling edge used to convert cell counts to units of time. time per cell count based on USO for each PCE. coordinates String delta_time useflag /atlas/pce1/altimetry/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 pce_mframe_cnt /atlas/pce1/altimetry/delta_time long_name String PCE Major frame counter units String counts source String ATL02 contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time n_bands /atlas/pce1/altimetry/delta_time long_name String Number Downlink Bands units String counts source String ATL01/atlas/pcex/a_alt_science contentType String referenceInformation description String Number of bands (in addition to the nominal 1 band) selected for downlink. coordinates String delta_time ch_mask_w /atlas/pce1/altimetry/delta_time /atlas/pce1/altimetry/ds_weak_channel_index long_name String Channel Mask Weak units String counts source String ATL01/atlas/pcex/a_alt_science contentType String referenceInformation description String Channel Mask for DLBOs. The 4 flags are a logical OR of the two band offset masks for weak beam coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_weak_channel_index ds_strong_channel_index ds_hist Description String The PCE Altimetry Science Packet data common to both beams (PCEx_ALT_SCI_TLM_MID in APID 1254, 1264, 1274 sequence flag 01 (once per major frame). (see ICESat-2-MEB-SPEC-0875, section 5.12, Spacewire: Major Frame Packet Data Format data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) weak band2_width /atlas/pce1/altimetry/delta_time long_name String Band2 Width units String seconds source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band2. coordinates String ../delta_time band1_offset /atlas/pce1/altimetry/delta_time long_name String Band1 Offset source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band1. coordinates String ../delta_time units String seconds band1_width /atlas/pce1/altimetry/delta_time long_name String Band1 Width source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band1. coordinates String ../delta_time units String seconds alt_rw_width /atlas/pce1/altimetry/delta_time long_name String Altimetric Range Window Width units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds from the range window start and range window stop coordinates String ../delta_time hist /atlas/pce1/altimetry/delta_time /atlas/pce1/altimetry/ds_hist long_name String Center-aligned TOF Histogram units String counts source String ATL02 contentType String qualityInformation description String Per-major frame, peak-aligned, windowed time-of-flight histograms. coordinates String ../ds_hist ../delta_time alt_rw_start /atlas/pce1/altimetry/delta_time long_name String Altimetric Range Window Start units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds between the transmit pulse and the start of the altimetric range window for the beam coordinates String ../delta_time band2_offset /atlas/pce1/altimetry/delta_time long_name String Band2 Offset units String seconds source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band2. coordinates String ../delta_time n_mf_ph /atlas/pce1/altimetry/delta_time long_name String Number of photons units String counts source String Derived contentType String auxiliaryInformation description String Number of photons within each major frame. coordinates String ../delta_time ph_ndx_beg /atlas/pce1/altimetry/delta_time long_name String Photon Index Begin units String counts source String Derived contentType String auxiliaryInformation description String Index (1-based) within the photon-rate data of the first photon within each major frame. coordinates String ../delta_time Description String The PCE Altimetry Science Packet specific to a beam (PCEx_ALT_SCI_TLM_MID in APID 1254, 1264, 1274 sequence flag 01 (once per major frame). (see ICESat-2-MEB-SPEC-0875, section 5.12, Spacewire: Major Frame Packet Data Format data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) photons delta_time 7273277 delta_time /atlas/pce1/altimetry/weak/photons/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The Time of Day for the specific Transmit (TX) pulse associated with the Received (RX) event. (see L1B ATBD section 5 time of flight), relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ph_id_count /atlas/pce1/altimetry/weak/photons/delta_time long_name String photon event counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String photon event counter is part of photon ID and will count from 1 for each channel until reset by laser pulse counter. If ph_id_count is 0, then there was a transmit pulse without any received photons. In this case, the transmit portion of the alt_science packet is valid, but the receive portion is all 0s and should not be used. coordinates String delta_time ph_tof /atlas/pce1/altimetry/weak/photons/delta_time long_name String Time of Flight source String ATL02 ATBD contentType String physicalMeasurement description String Time of flight (TOF); the round trip time in seconds of the received photon relative to the beam's zero range point (ZRP). Computed from the Transmit (Tx) and Receive (Rx) Time-of-flight components and then calibrated to the centroid of the transmit pulse. coordinates String delta_time units String seconds tx_other_tof /atlas/pce1/altimetry/weak/photons/delta_time long_name String Other Transmit Time from LL units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Time of flight from the PCE-specific leading-lower (LL) threshold (tx_ll_tof) to the detected other transmit pulse edge. For PCE1, this is the time from the PCE1 LL to the Transmit Leading Upper edge (LU) threshold; for PCE2, this is the time from the PCE2 LL to the Transmit Trailing Upper edge (TU) threshold; and for PCE3, this is the time from the PCE3 LL to the Transmit Trailing Lower edge (TL) threshold. coordinates String delta_time ph_id_pulse /atlas/pce1/altimetry/weak/photons/delta_time long_name String laser pulse counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String laser pulse counter is part of photon ID and will count from 1 to 200 and reset for each new major frame (major_fram_id). If the corresponding ph_id_count is 0, then there was a transmit pulse without any received photons. coordinates String delta_time rx_band_id /atlas/pce1/altimetry/weak/photons/delta_time long_name String rx downlink band id units String counts source String ATL01/atlas/pcex/a_alt_science_ph RX data valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Flag to indicate downlink band id associated with the received rx_tof (received photon event). A value of 0 indicates the photon corresponds to band1; A value of 1 indicates the photon corresponds to band2. Corresponding parameters are band_width, band_offset and band_eventcount. coordinates String delta_time flag_meanings String band1 band2 flag_values Int8 0 1 ph_id_channel /atlas/pce1/altimetry/weak/photons/delta_time long_name String Receive channel id units String 1 source String Derived as part of Photon ID valid_min Byte 1 valid_max Byte 120 contentType String referenceInformation description String Channel number assigned for each received photon event. This is part of the photon ID. Values range from 1 to 120 to span all channels and rise/fall edges. Values 1 to 60 are for falling edge; PCE1 (1 to 20), PCE 2 (21 to 40) and PCE3 (41 to 60). Values 61 to 120 are for rising edge; PCE1 (61 to 80), PCE 2 (81 to 100) and PC3 (101 to 120). coordinates String delta_time tx_ll_tof /atlas/pce1/altimetry/weak/photons/delta_time long_name String Transmit LL time from T0 units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Transmit (Tx) Leading Lower (LL) time of flight (TOF); the round trip time in seconds from the detected lower leading edge of the transmit pulse relative to the ATLAS T0. Includes all calibrations of coarse and fine counts. coordinates String delta_time tof_flag /atlas/pce1/altimetry/weak/photons/delta_time long_name String TOF Flag units String counts source String L1B ATBD Sect 2.5.4 valid_min Int8 1 valid_max Int8 18 contentType String referenceInformation description String Time Of Flight center correction flag. Values indicate what components were used to adjust the TOF to the centroid of the Tx pulse, based on the alignment of Tx components across all 3 PCEs. 1=LL_LU_TU_TL; 2=LL_TU_TL; 3=LL_LU_TL; 4=LL_LU_TU; 5=LL_TL; 6=LL_TU; 7=LL_LU; 8=LL. Values greater than 10 indicate the same sequence of conditions indicated for a potential TEP photon. coordinates String delta_time flag_meanings String LL_LU_TU_TL LL_TU_TL LL_LU_TL LL_LU_TU LL_TL LL_TU LL_LU LL TEP_LL_LU_TU_TL TEP_LL_TU_TL TEP_LL_LU_TL TEP_LL_LU_TU TEP_LL_TL TEP_LL_TU TEP_LL_LU TEP_LL flag_values Int8 1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 pce_mframe_cnt /atlas/pce1/altimetry/weak/photons/delta_time long_name String PCE Major frame counter units String counts source String Retained from latest a_alt_science packet contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Group contains the PCE Altimetric received photon event (ph) decommutated data and its matching Transmit time tag data. Note the Transmit time tag data are repeated for each received photon event. Data is from Altimetry Science Packet (alt_sci_tlm) APID 1254, 1264, 1274 with Sequence Flag = 0 or 2. See ICESat-2-MEB-SPEC-0875, section 5.12, SPACEWIRE: TIME TAG SCIENCE DATA FORMAT data_rate String Data within this group are stored at the data rate of the source photon events. (varies by detection; nominal value is sixty thousand per second, derived from laser_rate * photons_per_shot * beams_per_pce; where laser_rate=10000, photons_per_shot=3, beams_per_pce=2.) strong band2_width /atlas/pce1/altimetry/delta_time long_name String Band2 Width units String seconds source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band2. coordinates String ../delta_time band1_offset /atlas/pce1/altimetry/delta_time long_name String Band1 Offset source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band1. coordinates String ../delta_time units String seconds band1_width /atlas/pce1/altimetry/delta_time long_name String Band1 Width source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band1. coordinates String ../delta_time units String seconds alt_rw_width /atlas/pce1/altimetry/delta_time long_name String Altimetric Range Window Width units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds from the range window start and range window stop coordinates String ../delta_time hist /atlas/pce1/altimetry/delta_time /atlas/pce1/altimetry/ds_hist long_name String Center-aligned TOF Histogram units String counts source String ATL02 contentType String qualityInformation description String Per-major frame, peak-aligned, windowed time-of-flight histograms. coordinates String ../ds_hist ../delta_time alt_rw_start /atlas/pce1/altimetry/delta_time long_name String Altimetric Range Window Start units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds between the transmit pulse and the start of the altimetric range window for the beam coordinates String ../delta_time band2_offset /atlas/pce1/altimetry/delta_time long_name String Band2 Offset units String seconds source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band2. coordinates String ../delta_time n_mf_ph /atlas/pce1/altimetry/delta_time long_name String Number of photons units String counts source String Derived contentType String auxiliaryInformation description String Number of photons within each major frame. coordinates String ../delta_time ph_ndx_beg /atlas/pce1/altimetry/delta_time long_name String Photon Index Begin units String counts source String Derived contentType String auxiliaryInformation description String Index (1-based) within the photon-rate data of the first photon within each major frame. coordinates String ../delta_time Description String The PCE Altimetry Science Packet specific to a beam (PCEx_ALT_SCI_TLM_MID in APID 1254, 1264, 1274 sequence flag 01 (once per major frame). (see ICESat-2-MEB-SPEC-0875, section 5.12, Spacewire: Major Frame Packet Data Format data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) photons delta_time 10888379 delta_time /atlas/pce1/altimetry/strong/photons/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The Time of Day for the specific Transmit (TX) pulse associated with the Received (RX) event. (see L1B ATBD section 5 time of flight), relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ph_id_count /atlas/pce1/altimetry/strong/photons/delta_time long_name String photon event counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String photon event counter is part of photon ID and will count from 1 for each channel until reset by laser pulse counter. If ph_id_count is 0, then there was a transmit pulse without any received photons. In this case, the transmit portion of the alt_science packet is valid, but the receive portion is all 0s and should not be used. coordinates String delta_time ph_tof /atlas/pce1/altimetry/strong/photons/delta_time long_name String Time of Flight source String ATL02 ATBD contentType String physicalMeasurement description String Time of flight (TOF); the round trip time in seconds of the received photon relative to the beam's zero range point (ZRP). Computed from the Transmit (Tx) and Receive (Rx) Time-of-flight components and then calibrated to the centroid of the transmit pulse. coordinates String delta_time units String seconds tx_other_tof /atlas/pce1/altimetry/strong/photons/delta_time long_name String Other Transmit Time from LL units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Time of flight from the PCE-specific leading-lower (LL) threshold (tx_ll_tof) to the detected other transmit pulse edge. For PCE1, this is the time from the PCE1 LL to the Transmit Leading Upper edge (LU) threshold; for PCE2, this is the time from the PCE2 LL to the Transmit Trailing Upper edge (TU) threshold; and for PCE3, this is the time from the PCE3 LL to the Transmit Trailing Lower edge (TL) threshold. coordinates String delta_time ph_id_pulse /atlas/pce1/altimetry/strong/photons/delta_time long_name String laser pulse counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String laser pulse counter is part of photon ID and will count from 1 to 200 and reset for each new major frame (major_fram_id). If the corresponding ph_id_count is 0, then there was a transmit pulse without any received photons. coordinates String delta_time rx_band_id /atlas/pce1/altimetry/strong/photons/delta_time long_name String rx downlink band id units String counts source String ATL01/atlas/pcex/a_alt_science_ph RX data valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Flag to indicate downlink band id associated with the received rx_tof (received photon event). A value of 0 indicates the photon corresponds to band1; A value of 1 indicates the photon corresponds to band2. Corresponding parameters are band_width, band_offset and band_eventcount. coordinates String delta_time flag_meanings String band1 band2 flag_values Int8 0 1 ph_id_channel /atlas/pce1/altimetry/strong/photons/delta_time long_name String Receive channel id units String 1 source String Derived as part of Photon ID valid_min Byte 1 valid_max Byte 120 contentType String referenceInformation description String Channel number assigned for each received photon event. This is part of the photon ID. Values range from 1 to 120 to span all channels and rise/fall edges. Values 1 to 60 are for falling edge; PCE1 (1 to 20), PCE 2 (21 to 40) and PCE3 (41 to 60). Values 61 to 120 are for rising edge; PCE1 (61 to 80), PCE 2 (81 to 100) and PC3 (101 to 120). coordinates String delta_time tx_ll_tof /atlas/pce1/altimetry/strong/photons/delta_time long_name String Transmit LL time from T0 units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Transmit (Tx) Leading Lower (LL) time of flight (TOF); the round trip time in seconds from the detected lower leading edge of the transmit pulse relative to the ATLAS T0. Includes all calibrations of coarse and fine counts. coordinates String delta_time tof_flag /atlas/pce1/altimetry/strong/photons/delta_time long_name String TOF Flag units String counts source String L1B ATBD Sect 2.5.4 valid_min Int8 1 valid_max Int8 18 contentType String referenceInformation description String Time Of Flight center correction flag. Values indicate what components were used to adjust the TOF to the centroid of the Tx pulse, based on the alignment of Tx components across all 3 PCEs. 1=LL_LU_TU_TL; 2=LL_TU_TL; 3=LL_LU_TL; 4=LL_LU_TU; 5=LL_TL; 6=LL_TU; 7=LL_LU; 8=LL. Values greater than 10 indicate the same sequence of conditions indicated for a potential TEP photon. coordinates String delta_time flag_meanings String LL_LU_TU_TL LL_TU_TL LL_LU_TL LL_LU_TU LL_TL LL_TU LL_LU LL TEP_LL_LU_TU_TL TEP_LL_TU_TL TEP_LL_LU_TL TEP_LL_LU_TU TEP_LL_TL TEP_LL_TU TEP_LL_LU TEP_LL flag_values Int8 1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 pce_mframe_cnt /atlas/pce1/altimetry/strong/photons/delta_time long_name String PCE Major frame counter units String counts source String Retained from latest a_alt_science packet contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Group contains the PCE Altimetric received photon event (ph) decommutated data and its matching Transmit time tag data. Note the Transmit time tag data are repeated for each received photon event. Data is from Altimetry Science Packet (alt_sci_tlm) APID 1254, 1264, 1274 with Sequence Flag = 0 or 2. See ICESat-2-MEB-SPEC-0875, section 5.12, SPACEWIRE: TIME TAG SCIENCE DATA FORMAT data_rate String Data within this group are stored at the data rate of the source photon events. (varies by detection; nominal value is sixty thousand per second, derived from laser_rate * photons_per_shot * beams_per_pce; where laser_rate=10000, photons_per_shot=3, beams_per_pce=2.) atmosphere_s delta_time 10575 ds_hist_bin_index 467 delta_time /atlas/pce1/atmosphere_s/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_hist_bin_index /atlas/pce1/atmosphere_s/ds_hist_bin_index long_name String DS for ATM histogram bins units String 1 source String Dimension Scale valid_min Int16 1 valid_max Int16 467 contentType String referenceInformation description String Dimension scale for atmosphere histogram bins. atm_shift_amount /atlas/pce1/atmosphere_s/delta_time units String counts long_name String Atmospheric Range Window Shift source String ATL01/atlas/pcex/a_atm_hist_x and L1B ATBD section ATM contentType String referenceInformation description String The number of bins the range window start of one of the histograms was shifted to align them before they are added together. coordinates String delta_time atm_rw_start /atlas/pce1/atmosphere_s/delta_time long_name String Atmospheric Range Window Start units String seconds source String ATL01/atlas/pcex/a_atm_hist_x and L1B ATBD section ATM contentType String referenceInformation description String The number of seconds between the transmit pulse and the start of the Atmospheric range window coordinates String delta_time atm_rw_width /atlas/pce1/atmosphere_s/delta_time long_name String Atmospheric Range Window Width units String seconds source String ATL01/atlas/pcex/a_atm_hist_x and L1B ATBD section ATM contentType String referenceInformation description String The number of seconds from the Atmospheric range window start and range window stop. coordinates String delta_time pce_mframe_cnt /atlas/pce1/atmosphere_s/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_atm_hist_x contentType String referenceInformation description String Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time atm_bins /atlas/pce1/atmosphere_s/delta_time /atlas/pce1/atmosphere_s/ds_hist_bin_index long_name String Atmospheric Science Histogram units String counts source String ATL01/atlas/pcex/a_atm_hist_x contentType String referenceInformation description String The histogram bins for the Atmospheric beam.Once every 400 shots ( laser pulses). Bin 1 (clouds) is nearest to spacecraft .Bin 467 is under ground. coordinates String delta_time useflag /atlas/pce1/atmosphere_s/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DODS_EXTRA Container Unlimited_Dimension String delta_time ds_hist_bin_index Description String Contains parameters relating to the PCE Atmospheric Data Histograms. Normally 25 hz. (APID 1255, 1259, 1265, 1269, 1275, 1279). P1 S,P1 W, P2 S, P2 W, P3 S, P3 W. data_rate String Data in this group is stored at a 25hz (25 per second) rate. pmf_hk delta_time 423 delta_time /atlas/pce1/pmf_hk/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. autorestartdfccount /atlas/pce1/pmf_hk/delta_time long_name String AutoRestartDFCCount units String counts source String APID 1073, 1089, 1105 Byte 0090-0091 contentType String referenceInformation description String Number of DFC Auto Restarts coordinates String delta_time cmd_err_cntr /atlas/pce1/pmf_hk/delta_time long_name String cmd_err_cntr units String counts source String APID 1073, 1089, 1105 Byte 0012-0012 contentType String referenceInformation description String Command error counter coordinates String delta_time cmd_suc_cntr /atlas/pce1/pmf_hk/delta_time long_name String cmd_suc_cntr units String counts source String APID 1073, 1089, 1105 Byte 0013-0013 contentType String referenceInformation description String Command success counter. coordinates String delta_time activeknobstable /atlas/pce1/pmf_hk/delta_time long_name String ActiveKnobsTable units String counts source String APID 1073, 1089, 1105 Byte 0037-0037 contentType String referenceInformation description String The active knobs table. coordinates String delta_time mode /atlas/pce1/pmf_hk/delta_time long_name String Mode units String counts source String APID 1073, 1089, 1105 Byte 0036-0036 valid_min Byte 0 valid_max Byte 5 contentType String referenceInformation description String PCE Mode. 0=STBY; 1=Science; 2=Test; 3=Manual; 4=Radio; 5=Unknown coordinates String delta_time flag_meanings String STBY Science Test Manual Radio Test flag_values Byte 0 1 2 3 4 5 DODS_EXTRA Container Unlimited_Dimension String delta_time Description String PCE Diagnostic Telemetry Packet from one of the following APIDs : 1073, 1089, 1105 (each APID is associated with a specific PCE). Packet Frequency is 1 Hertz. sxp_ssr_w delta_time 423 ds_50samples 50 delta_time /atlas/pce1/sxp_ssr_w/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_50samples /atlas/pce1/sxp_ssr_w/ds_50samples long_name String DS for 50 bytes units String 1 source String ATL01/atlas/pcex/a_sxp_ssr valid_min Int8 1 valid_max Int8 50 contentType String referenceInformation description String Dimension scale for an array of 50 samples. coordinates String delta_time latitude longitude latitude /atlas/pce1/sxp_ssr_w/delta_time /atlas/pce1/sxp_ssr_w/ds_50samples long_name String latitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Latitude coordinates String delta_time longitude /atlas/pce1/sxp_ssr_w/delta_time /atlas/pce1/sxp_ssr_w/ds_50samples long_name String longitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Longitude coordinates String delta_time mf_cosz /atlas/pce1/sxp_ssr_w/delta_time long_name String First Major Frame cosZ units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the solar zenith angle coordinates String delta_time latitude longitude pce_mframe_cnt /atlas/pce1/sxp_ssr_w/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. coordinates String delta_time latitude longitude cosb /atlas/pce1/sxp_ssr_w/delta_time /atlas/pce1/sxp_ssr_w/ds_50samples long_name String cosB units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the off-nadir angle as calculated onboard from the spacecraft information coordinates String delta_time latitude longitude srm /atlas/pce1/sxp_ssr_w/delta_time /atlas/pce1/sxp_ssr_w/ds_50samples long_name String srm units String 1 source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Surface type, vegetation and coastline information from the SRM. (bit 0-1 = surface type (0=ocean, 1=land, 2=sea ice, 3=land ice). Bit 2 = vegetation present, Bit 3 = coastline present) coordinates String delta_time latitude longitude DODS_EXTRA Container Unlimited_Dimension String delta_time ds_50samples Description String SBC Extrapolation Task telemetry containing Flight Science Receiver Algorithm team requested telemetry for the first set of PCE extrapolation data for a major frame.: lat, long, range, nadir angle, etc. (from APIDs 1152 thru 1157) background delta_time 84600 delta_time /atlas/pce1/background/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the 50 laser pulses used for background, in seconds relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. coordinates String delta_time bg_cnt_50shot_w /atlas/pce1/background/delta_time long_name String Weak background counts units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w indicates for the beam the # of counted time tags (BackgroundCounts_50Shot) during the range windows associated with a set of 50 laser pulses of the major frame. coordinates String delta_time bg_cnt_50shot_s /atlas/pce1/background/delta_time units String counts long_name String Strong background counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w indicates for the beam the # of counted time tags (BackgroundCounts_50Shot) during the range windows associated with a set of 50 laser pulses of the major frame. coordinates String delta_time pce_mframe_cnt /atlas/pce1/background/delta_time long_name String PCE Major frame counter units String counts source String Derived contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time useflag /atlas/pce1/background/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DODS_EXTRA Container Unlimited_Dimension String delta_time Description String The background data is specific to each beam and reported at a 50-shot rate. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) pce3 Description String Group contains the Photon Counting Electronics x (PCEx) packet decommutated data data_rate String Data within this group are stored at the data rate of the source PCE Data Packets. (nominally fifty per second.) sxp_ssr_s delta_time 423 ds_50samples 50 delta_time /atlas/pce3/sxp_ssr_s/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_50samples /atlas/pce3/sxp_ssr_s/ds_50samples long_name String DS for 50 bytes units String 1 source String ATL01/atlas/pcex/a_sxp_ssr valid_min Int8 1 valid_max Int8 50 contentType String referenceInformation description String Dimension scale for an array of 50 samples. coordinates String delta_time latitude longitude latitude /atlas/pce3/sxp_ssr_s/delta_time /atlas/pce3/sxp_ssr_s/ds_50samples long_name String latitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Latitude coordinates String delta_time longitude /atlas/pce3/sxp_ssr_s/delta_time /atlas/pce3/sxp_ssr_s/ds_50samples long_name String longitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Longitude coordinates String delta_time mf_cosz /atlas/pce3/sxp_ssr_s/delta_time long_name String First Major Frame cosZ units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the solar zenith angle coordinates String delta_time latitude longitude pce_mframe_cnt /atlas/pce3/sxp_ssr_s/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. coordinates String delta_time latitude longitude cosb /atlas/pce3/sxp_ssr_s/delta_time /atlas/pce3/sxp_ssr_s/ds_50samples long_name String cosB units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the off-nadir angle as calculated onboard from the spacecraft information coordinates String delta_time latitude longitude srm /atlas/pce3/sxp_ssr_s/delta_time /atlas/pce3/sxp_ssr_s/ds_50samples long_name String srm units String 1 source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Surface type, vegetation and coastline information from the SRM. (bit 0-1 = surface type (0=ocean, 1=land, 2=sea ice, 3=land ice). Bit 2 = vegetation present, Bit 3 = coastline present) coordinates String delta_time latitude longitude DODS_EXTRA Container Unlimited_Dimension String delta_time ds_50samples Description String SBC Extrapolation Task telemetry containing Flight Science Receiver Algorithm team requested telemetry for the first set of PCE extrapolation data for a major frame.: lat, long, range, nadir angle, etc. (from APIDs 1152 thru 1157) dfc_hk delta_time 21150 delta_time /atlas/pce3/dfc_hk/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. alt_last_seq_count /atlas/pce3/dfc_hk/delta_time long_name String last sequence packet count units String counts source String APID 1072, 1088, 1104 Byte 0060-0061 contentType String referenceInformation description String CCSDS Packet Sequence Count value of the last downlink packet prior to the major frame. This should be the last packet associated with the previous major frame. That packet should contain the last Tx/RX data for the last shot of the previous major frame. (not EU-converted) coordinates String delta_time alt_rw_start_reg_w /atlas/pce3/dfc_hk/delta_time long_name String Altimetric Weak Range Window Start Reg units String counts source String APID 1072, 1088, 1104 Byte 0086-0088 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the altimetric range window for the weak spot. (not EU-converted) coordinates String delta_time alt_t0_cnt /atlas/pce3/dfc_hk/delta_time long_name String T0 counter units String counts source String APID 1072, 1088, 1104 Byte 0028-0029 contentType String referenceInformation description String ATLAS flight s/w T0 counter that clears with 1PPS (not EU-converted) coordinates String delta_time alt_spw_not_ready_cnt /atlas/pce3/dfc_hk/delta_time long_name String SpW Not Ready Counter units String counts source String APID 1072, 1088, 1104 Byte 0115 contentType String referenceInformation description String Counts each time SpW causes DFC to wait to transmit data to back-end (Status Only) (not EU-converted) coordinates String delta_time alt_sci_seg_limit /atlas/pce3/dfc_hk/delta_time long_name String Science Data Segment Limit Size units String counts source String APID 1072, 1088, 1104 Byte 0069-0070 contentType String referenceInformation description String Science Data Segment Limit Size ; initialization Value (not EU-converted) coordinates String delta_time alt_rw_start_reg_s /atlas/pce3/dfc_hk/delta_time long_name String Altimetric Strong Range Window Start Reg units String counts source String APID 1072, 1088, 1104 Byte 0076-0078 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the altimetric range window for the strong spot (not EU-converted) coordinates String delta_time alt_spot_tag_cnts_s 21150 4 long_name String strong spot tag counter units String counts source String APID 1072, 1088, 1104 Byte 0034-0041 contentType String referenceInformation description String The number of events received by the DFC on channels 1 through 16 summed over 50 range window openings. The four elements of the array correspond to dividing the major frame up into 50 shots. The last element of the array can be 49 or 51 shots depending on the alignment of the range windows with respect to the major frame. Note that these counts are time tag counts and are subject to all the limitations and behaviors associated with time tags (duplicates, FIFO overflows, etc.). (not EU-converted) coordinates String delta_time alt_rw_width_reg_s /atlas/pce3/dfc_hk/delta_time long_name String Altimetric Strong Range Window Width Reg units String counts source String APID 1072, 1088, 1104 Byte 0079-0080 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the range window start and range window stop for the strong spot. (not EU-converted) coordinates String delta_time alt_spot_tag_cnts_w 21150 4 long_name String weak spot tag counter units String counts source String APID 1072, 1088, 1104 Byte 0042-48 contentType String referenceInformation description String The number of events received by the DFC on channels 17 through 20 summed over 50 range window openings. The four elements of the array correspond to dividing the major frame up into 50 shots. The last element of the array can be 49 or 51 shots depending on the alignment of the range windows with respect to the major frame. Note that these counts are time tag counts and are subject to all the limitations and behaviors associated with time tags (duplicates, FIFO overflows, etc.). (not EU-converted) coordinates String delta_time alt_cmd_count /atlas/pce3/dfc_hk/delta_time long_name String Command Counter units String counts source String APID 1072, 1088, 1104 Byte 0062-0063 contentType String referenceInformation description String Command Counter; Indicates the number of good commands received by the DFC prior to the Major Frame Packet being transmitted (not EU-converted) coordinates String delta_time alt_gp_reg 21150 2 long_name String General Purpose Register units String counts source String APID 1072, 1088, 1104 Byte 0100-0101 contentType String referenceInformation description String General Purpose Register (not EU-converted) coordinates String delta_time tx_leading_coarse /atlas/pce3/dfc_hk/delta_time long_name String tx latest leading edge coarse units String counts source String APID 1072, 1088, 1104 Byte 0054-0056 contentType String referenceInformation description String Latest Leading Start Time Tag-acquired leading start time tag value (paired with trailing start time time tag value) coarse time in counts (not EU-converted) coordinates String delta_time alt_dfc_hk_status 21150 5 source String APID 1072, 1088, 1104 Byte 0106-0110 contentType String referenceInformation description String DFC Housekeeping Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12 (not EU-converted) coordinates String delta_time long_name String DFC Housekeeping Status Bits units String counts alt_write_watchdog /atlas/pce3/dfc_hk/delta_time long_name String Tag write watchdog value units String counts source String APID 1072, 1088, 1104 Byte 0072-0073 contentType String referenceInformation description String Tag write watchdog value ; initialization Value (not EU-converted) coordinates String delta_time atm_rw_start_reg_s /atlas/pce3/dfc_hk/delta_time long_name String Atmospheric Strong Range Window Start Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0081-0083 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the Atmospheric range window for the strong spot. (not EU-converted) coordinates String delta_time alt_dupe_margin /atlas/pce3/dfc_hk/delta_time long_name String Duplicate time tag removal units String counts source String APID 1072, 1088, 1104 Byte 0066-0067 contentType String referenceInformation description String Duplicate time tag removal ; initialization Value (not EU-converted) coordinates String delta_time tx_trailing_cell /atlas/pce3/dfc_hk/delta_time long_name String tx latest trailing edge fine units String counts source String APID 1072, 1088, 1104 Byte 0057-0059 contentType String referenceInformation description String Latest trailing Start Time Tag-acquired trailing start time tag value (paired with trailing start time time tag value) cell counts (not EU-converted) coordinates String delta_time atm_rw_width_reg_w /atlas/pce3/dfc_hk/delta_time long_name String Atmospheric Weak Range Window Width Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0094-0095 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the Atmospheric range window start and range window stop for the weak spot. (not EU-converted) coordinates String delta_time alt_mframe_freq /atlas/pce3/dfc_hk/delta_time long_name String Major frame frequency units String counts source String APID 1072, 1088, 1104 Byte 0074 contentType String referenceInformation description String The number of shots per major frame. (not EU-converted) coordinates String delta_time alt_debug_status 21150 3 long_name String Debug Status Bits units String counts source String APID 1072, 1088, 1104 Byte 0112-0114 contentType String referenceInformation description String Debug Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12. (not EU-converted) coordinates String delta_time alt_config /atlas/pce3/dfc_hk/delta_time long_name String Configuration units String counts source String APID 1072, 1088, 1104 Byte 0075 contentType String referenceInformation description String Configuration bits (not EU-converted) coordinates String delta_time tx_trailing_coarse /atlas/pce3/dfc_hk/delta_time long_name String tx latest trailing edge coarse units String counts source String APID 1072, 1088, 1104 Byte 0057-0059 contentType String referenceInformation description String Latest trailing Start Time Tag-acquired trailing start time tag value (paired with trailing start time time tag value) coarse time in counts (not EU-converted) coordinates String delta_time alt_sci_addr /atlas/pce3/dfc_hk/delta_time long_name String Logical address for science data transmit units String counts source String APID 1072, 1088, 1104 Byte 0065 contentType String referenceInformation description String Logical address for science data transmit ; initialization Value (not EU-converted) coordinates String delta_time alt_wait_watchdog /atlas/pce3/dfc_hk/delta_time long_name String Tag wait watchdog value units String counts source String APID 1072, 1088, 1104 Byte 0071 contentType String referenceInformation description String Tag wait watchdog value ; initialization Value (not EU-converted) coordinates String delta_time tx_leading_cell /atlas/pce3/dfc_hk/delta_time long_name String tx latest leading edge fine units String counts source String APID 1072, 1088, 1104 Byte 0054-0056 contentType String referenceInformation description String Latest Leading Start Time Tag-acquired leading start time tag value (paired with trailing start time time tag value) cell counts (not EU-converted) coordinates String delta_time atm_rw_start_reg_w /atlas/pce3/dfc_hk/delta_time long_name String Atmospheric Weak Range Window Start Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0091-0093 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the transmit pulse and the start of the Atmospheric range window for the weak spot. (not EU-converted) coordinates String delta_time atm_rw_width_reg_s /atlas/pce3/dfc_hk/delta_time long_name String Atmospheric Strong Range Window Width Reg units String clock cycles source String APID 1072, 1088, 1104 Byte 0084-0085 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the Atmospheric range window start and range window stop for the strong spot. (not EU-converted) coordinates String delta_time alt_imet_at_1pps /atlas/pce3/dfc_hk/delta_time long_name String IMET at 1 pps units String counts source String APID 1072, 1088, 1104 Byte 0016-0021 contentType String referenceInformation description String ATLAS flight s/w 25 MHz IMET counter value when 1PPS is received (not EU-converted) coordinates String delta_time alt_debug_reg 21150 4 long_name String Debug Control Register units String counts source String APID 1072, 1088, 1104 Byte 0096-0099 contentType String referenceInformation description String Debug Control Register (not EU-converted) coordinates String delta_time alt_cal_interval /atlas/pce3/dfc_hk/delta_time long_name String Calibration request interval from TDC units String counts source String APID 1072, 1088, 1104 Byte 0068 contentType String referenceInformation description String Calibration request interval from TDC (not EU-converted) coordinates String delta_time alt_edac_status 21150 4 long_name String EDAC Status Bits units String counts source String APID 1072, 1088, 1104 Byte 102-105 contentType String referenceInformation description String EDAC Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12 (not EU-converted) coordinates String delta_time alt_cal_rise /atlas/pce3/dfc_hk/delta_time units String counts long_name String Altimetric Latest Calibration Rising source String APID 1072, 1088, 1104 Byte 0050-0051 contentType String referenceInformation description String The PCE latest calibration value for the rising edge (not EU-converted) coordinates String delta_time pce_mframe_cnt /atlas/pce3/dfc_hk/delta_time long_name String PCE Major frame counter units String counts source String APID 1072, 1088, 1104 Byte 0030-0033 contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time alt_imet_at_first_t0 /atlas/pce3/dfc_hk/delta_time long_name String IMET at first T0 after 1 pps units String counts source String APID 1072, 1088, 1104 Byte 0022-0027 contentType String referenceInformation description String ATLAS flight s/w 25 MHz IMET counter value when 1PPS is received (not EU-converted) coordinates String delta_time alt_last_opcode /atlas/pce3/dfc_hk/delta_time long_name String Last Opcode Received units String counts source String APID 1072, 1088, 1104 Byte 0064 contentType String referenceInformation description String Indicates the last good opcode received prior to the Major Frame Packet being transmitted; 0xFF indicates an error condition of either protocol ID mismatch, invalid opcode, or invalid length (not EU-converted) coordinates String delta_time alt_rw_width_reg_w /atlas/pce3/dfc_hk/delta_time long_name String Altimetric Weak Range Window Width Reg units String counts source String APID 1072, 1088, 1104 Byte 0089-0090 contentType String referenceInformation description String Value of register set in initialization command for the number of 10ns ticks between the range window start and range window stop for the weak spot. (not EU-converted) coordinates String delta_time alt_1pps_count /atlas/pce3/dfc_hk/delta_time long_name String MET 1pps counter units String counts source String APID 1072, 1088, 1104 Byte 0012-0015 contentType String referenceInformation description String ATLAS flight s/w 1PPS counter (not EU-converted) coordinates String delta_time alt_dfc_status /atlas/pce3/dfc_hk/delta_time long_name String DFC Status Bits units String counts source String APID 1072, 1088, 1104 Byte 0111 contentType String referenceInformation description String DFC Status Bits. Defined in ATLAS MEB PCE DFC FPGA Specification, ICESat-2-MEB-SPEC-0875, section 5.12 (not EU-converted) coordinates String delta_time alt_cal_fall /atlas/pce3/dfc_hk/delta_time long_name String Altimetric Latest Calibration Falling units String counts source String APID 1072, 1088, 1104 Byte 0052-0053 contentType String referenceInformation description String The PCE latest calibration value for the falling edge. (not EU-converted) coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String This DFCx_hk is a diagnostic packet (APID 1072, 1088, 1104) that contains some of the parameters normally part of APID 1254, 1264, 1274 (as sequence flag 01). Also know as the PCE Altimetric Science Data Major Frame described in ICESat-2-MEB-SPEC-0875, section 5.13 Table 19. The data in the group are neither calibrated nor EU-converted, but preserved from ATL01 in order provided diagnostics for TOF processing. data_rate String Data within this group are stored at the data rate of the source APID (nominally 50 Hz). algorithm_science delta_time 21150 ds_4bytes 4 ds_2samples 2 ds_2samples /atlas/pce3/algorithm_science/ds_2samples long_name String DS for 2 bytes units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 2 contentType String referenceInformation description String Dimension scale for an array of 2 samples. ds_4bytes /atlas/pce3/algorithm_science/ds_4bytes long_name String DS for 4 bytes units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 4 contentType String referenceInformation description String Dimension scale for an array of 4 bytes. delta_time /atlas/pce3/algorithm_science/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. gps_time /atlas/pce3/algorithm_science/delta_time long_name String GPS seconds at the Major Frame units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String GPS seconds at the Major Frame coordinates String delta_time alt_band_mask /atlas/pce3/algorithm_science/delta_time /atlas/pce3/algorithm_science/ds_4bytes long_name String Band Mask units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Band Mask. Each byte corresponds to a single Band, in the order of 1-4. coordinates String delta_time amet_time /atlas/pce3/algorithm_science/delta_time long_name String AMET seconds at the Major Frame units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String AMET seconds at the Major Frame coordinates String delta_time useflag /atlas/pce3/algorithm_science/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 alt_band_channel_mask /atlas/pce3/algorithm_science/delta_time /atlas/pce3/algorithm_science/ds_4bytes long_name String Band Channel Mask units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Band Channel Mask. (Bands 1-4) coordinates String delta_time pce_mframe_cnt /atlas/pce3/algorithm_science/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. coordinates String delta_time alt_nbands /atlas/pce3/algorithm_science/delta_time long_name String Number of bands units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Number of bands. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_4bytes ds_2samples Description String The PCE PMF Algorithm Science data group. Contains outputs from the onboard receiver algorithm software. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) weak alt_error_flags /atlas/pce3/algorithm_science/delta_time /atlas/pce3/algorithm_science/ds_2samples source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String FSW error flags coordinates String ../delta_time long_name String Error Flags units String counts daynight_flag /atlas/pce3/algorithm_science/delta_time long_name String Day/Night flag units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science valid_min Byte 0 valid_max Byte 1 contentType String referenceInformation description String ATLAS flight software Day/Night Flag associated with the major frame. 0= day, 1 =night. Based on an algorithm determination of the background rate, not on the actual position of the sun. coordinates String ../delta_time flag_meanings String day night flag_values Byte 0 1 decisionflags /atlas/pce3/algorithm_science/delta_time /atlas/pce3/algorithm_science/ds_4bytes long_name String Decision Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w Decision Flags associated with the major frame. indication if there was an error or if no science data is sent and why coordinates String ../delta_time flywheel /atlas/pce3/algorithm_science/delta_time long_name String Flywheel units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Flywheel associated with the major frame. coordinates String ../delta_time signalflags /atlas/pce3/algorithm_science/delta_time long_name String Signal Found Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w signal event flags associated with the major frame. coordinates String ../delta_time Description String The PCE PMF Algorithm Science data group. Contains outputs from the onboard receiver algorithm software. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) strong alt_error_flags /atlas/pce3/algorithm_science/delta_time /atlas/pce3/algorithm_science/ds_2samples source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String FSW error flags coordinates String ../delta_time long_name String Error Flags units String counts daynight_flag /atlas/pce3/algorithm_science/delta_time long_name String Day/Night flag units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science valid_min Byte 0 valid_max Byte 1 contentType String referenceInformation description String ATLAS flight software Day/Night Flag associated with the major frame. 0= day, 1 =night. Based on an algorithm determination of the background rate, not on the actual position of the sun. coordinates String ../delta_time flag_meanings String day night flag_values Byte 0 1 decisionflags /atlas/pce3/algorithm_science/delta_time /atlas/pce3/algorithm_science/ds_4bytes long_name String Decision Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w Decision Flags associated with the major frame. indication if there was an error or if no science data is sent and why coordinates String ../delta_time flywheel /atlas/pce3/algorithm_science/delta_time long_name String Flywheel units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight software Flywheel associated with the major frame. coordinates String ../delta_time signalflags /atlas/pce3/algorithm_science/delta_time long_name String Signal Found Flags units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w signal event flags associated with the major frame. coordinates String ../delta_time Description String The PCE PMF Algorithm Science data group. Contains outputs from the onboard receiver algorithm software. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) altimetry delta_time 21150 ds_weak_channel_index 4 ds_strong_channel_index 16 ds_hist 199 ds_hist /atlas/pce3/altimetry/ds_hist long_name String Histogram Dimension Scale units String seconds source String ATL02 contentType String referenceInformation description String Relative bin values of windowed, peak-centered TOF histograms. Peak value = 0 delta_time /atlas/pce3/altimetry/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_strong_channel_index /atlas/pce3/altimetry/ds_strong_channel_index long_name String DS for Strong Channels units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 16 contentType String referenceInformation description String Dimension scale for strong channels. ds_weak_channel_index /atlas/pce3/altimetry/ds_weak_channel_index long_name String DS for Weak Channels units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 4 contentType String referenceInformation description String Dimension scale for weak channels. ch_mask_s /atlas/pce3/altimetry/delta_time /atlas/pce3/altimetry/ds_strong_channel_index long_name String Channel Mask Strong units String counts source String ATL01/atlas/pcex/a_alt_science contentType String referenceInformation description String Channel Mask for DLBOs. The 16 flags are a logical OR of the two band offset masks for strong beam coordinates String delta_time cal_rise_sm /atlas/pce3/altimetry/delta_time long_name String Altimetric Latest Calibration Rising units String seconds/cell source String Derived via L1B ATBD contentType String referenceInformation description String The smoothed, calibrated value for the rising edge used to convert cell counts to units of time. time per cell count based on USO for each PCE. coordinates String delta_time cal_fall_sm /atlas/pce3/altimetry/delta_time long_name String Altimetric Latest Calibration Falling units String seconds/cell source String Derived via L1B ATBD contentType String referenceInformation description String The smoothed, calibrated value for the falling edge used to convert cell counts to units of time. time per cell count based on USO for each PCE. coordinates String delta_time useflag /atlas/pce3/altimetry/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 pce_mframe_cnt /atlas/pce3/altimetry/delta_time long_name String PCE Major frame counter units String counts source String ATL02 contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time n_bands /atlas/pce3/altimetry/delta_time long_name String Number Downlink Bands units String counts source String ATL01/atlas/pcex/a_alt_science contentType String referenceInformation description String Number of bands (in addition to the nominal 1 band) selected for downlink. coordinates String delta_time ch_mask_w /atlas/pce3/altimetry/delta_time /atlas/pce3/altimetry/ds_weak_channel_index long_name String Channel Mask Weak units String counts source String ATL01/atlas/pcex/a_alt_science contentType String referenceInformation description String Channel Mask for DLBOs. The 4 flags are a logical OR of the two band offset masks for weak beam coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_weak_channel_index ds_strong_channel_index ds_hist Description String The PCE Altimetry Science Packet data common to both beams (PCEx_ALT_SCI_TLM_MID in APID 1254, 1264, 1274 sequence flag 01 (once per major frame). (see ICESat-2-MEB-SPEC-0875, section 5.12, Spacewire: Major Frame Packet Data Format data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) weak band2_width /atlas/pce3/altimetry/delta_time long_name String Band2 Width units String seconds source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band2. coordinates String ../delta_time band1_offset /atlas/pce3/altimetry/delta_time long_name String Band1 Offset source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band1. coordinates String ../delta_time units String seconds band1_width /atlas/pce3/altimetry/delta_time long_name String Band1 Width source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band1. coordinates String ../delta_time units String seconds alt_rw_width /atlas/pce3/altimetry/delta_time long_name String Altimetric Range Window Width units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds from the range window start and range window stop coordinates String ../delta_time hist /atlas/pce3/altimetry/delta_time /atlas/pce3/altimetry/ds_hist long_name String Center-aligned TOF Histogram units String counts source String ATL02 contentType String qualityInformation description String Per-major frame, peak-aligned, windowed time-of-flight histograms. coordinates String ../ds_hist ../delta_time alt_rw_start /atlas/pce3/altimetry/delta_time long_name String Altimetric Range Window Start units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds between the transmit pulse and the start of the altimetric range window for the beam coordinates String ../delta_time band2_offset /atlas/pce3/altimetry/delta_time long_name String Band2 Offset units String seconds source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band2. coordinates String ../delta_time n_mf_ph /atlas/pce3/altimetry/delta_time long_name String Number of photons units String counts source String Derived contentType String auxiliaryInformation description String Number of photons within each major frame. coordinates String ../delta_time ph_ndx_beg /atlas/pce3/altimetry/delta_time long_name String Photon Index Begin units String counts source String Derived contentType String auxiliaryInformation description String Index (1-based) within the photon-rate data of the first photon within each major frame. coordinates String ../delta_time Description String The PCE Altimetry Science Packet specific to a beam (PCEx_ALT_SCI_TLM_MID in APID 1254, 1264, 1274 sequence flag 01 (once per major frame). (see ICESat-2-MEB-SPEC-0875, section 5.12, Spacewire: Major Frame Packet Data Format data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) photons delta_time 6922635 delta_time /atlas/pce3/altimetry/weak/photons/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The Time of Day for the specific Transmit (TX) pulse associated with the Received (RX) event. (see L1B ATBD section 5 time of flight), relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ph_id_count /atlas/pce3/altimetry/weak/photons/delta_time long_name String photon event counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String photon event counter is part of photon ID and will count from 1 for each channel until reset by laser pulse counter. If ph_id_count is 0, then there was a transmit pulse without any received photons. In this case, the transmit portion of the alt_science packet is valid, but the receive portion is all 0s and should not be used. coordinates String delta_time ph_tof /atlas/pce3/altimetry/weak/photons/delta_time long_name String Time of Flight source String ATL02 ATBD contentType String physicalMeasurement description String Time of flight (TOF); the round trip time in seconds of the received photon relative to the beam's zero range point (ZRP). Computed from the Transmit (Tx) and Receive (Rx) Time-of-flight components and then calibrated to the centroid of the transmit pulse. coordinates String delta_time units String seconds tx_other_tof /atlas/pce3/altimetry/weak/photons/delta_time long_name String Other Transmit Time from LL units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Time of flight from the PCE-specific leading-lower (LL) threshold (tx_ll_tof) to the detected other transmit pulse edge. For PCE1, this is the time from the PCE1 LL to the Transmit Leading Upper edge (LU) threshold; for PCE2, this is the time from the PCE2 LL to the Transmit Trailing Upper edge (TU) threshold; and for PCE3, this is the time from the PCE3 LL to the Transmit Trailing Lower edge (TL) threshold. coordinates String delta_time ph_id_pulse /atlas/pce3/altimetry/weak/photons/delta_time long_name String laser pulse counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String laser pulse counter is part of photon ID and will count from 1 to 200 and reset for each new major frame (major_fram_id). If the corresponding ph_id_count is 0, then there was a transmit pulse without any received photons. coordinates String delta_time rx_band_id /atlas/pce3/altimetry/weak/photons/delta_time long_name String rx downlink band id units String counts source String ATL01/atlas/pcex/a_alt_science_ph RX data valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Flag to indicate downlink band id associated with the received rx_tof (received photon event). A value of 0 indicates the photon corresponds to band1; A value of 1 indicates the photon corresponds to band2. Corresponding parameters are band_width, band_offset and band_eventcount. coordinates String delta_time flag_meanings String band1 band2 flag_values Int8 0 1 ph_id_channel /atlas/pce3/altimetry/weak/photons/delta_time long_name String Receive channel id units String 1 source String Derived as part of Photon ID valid_min Byte 1 valid_max Byte 120 contentType String referenceInformation description String Channel number assigned for each received photon event. This is part of the photon ID. Values range from 1 to 120 to span all channels and rise/fall edges. Values 1 to 60 are for falling edge; PCE1 (1 to 20), PCE 2 (21 to 40) and PCE3 (41 to 60). Values 61 to 120 are for rising edge; PCE1 (61 to 80), PCE 2 (81 to 100) and PC3 (101 to 120). coordinates String delta_time tx_ll_tof /atlas/pce3/altimetry/weak/photons/delta_time long_name String Transmit LL time from T0 units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Transmit (Tx) Leading Lower (LL) time of flight (TOF); the round trip time in seconds from the detected lower leading edge of the transmit pulse relative to the ATLAS T0. Includes all calibrations of coarse and fine counts. coordinates String delta_time tof_flag /atlas/pce3/altimetry/weak/photons/delta_time long_name String TOF Flag units String counts source String L1B ATBD Sect 2.5.4 valid_min Int8 1 valid_max Int8 18 contentType String referenceInformation description String Time Of Flight center correction flag. Values indicate what components were used to adjust the TOF to the centroid of the Tx pulse, based on the alignment of Tx components across all 3 PCEs. 1=LL_LU_TU_TL; 2=LL_TU_TL; 3=LL_LU_TL; 4=LL_LU_TU; 5=LL_TL; 6=LL_TU; 7=LL_LU; 8=LL. Values greater than 10 indicate the same sequence of conditions indicated for a potential TEP photon. coordinates String delta_time flag_meanings String LL_LU_TU_TL LL_TU_TL LL_LU_TL LL_LU_TU LL_TL LL_TU LL_LU LL TEP_LL_LU_TU_TL TEP_LL_TU_TL TEP_LL_LU_TL TEP_LL_LU_TU TEP_LL_TL TEP_LL_TU TEP_LL_LU TEP_LL flag_values Int8 1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 pce_mframe_cnt /atlas/pce3/altimetry/weak/photons/delta_time long_name String PCE Major frame counter units String counts source String Retained from latest a_alt_science packet contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Group contains the PCE Altimetric received photon event (ph) decommutated data and its matching Transmit time tag data. Note the Transmit time tag data are repeated for each received photon event. Data is from Altimetry Science Packet (alt_sci_tlm) APID 1254, 1264, 1274 with Sequence Flag = 0 or 2. See ICESat-2-MEB-SPEC-0875, section 5.12, SPACEWIRE: TIME TAG SCIENCE DATA FORMAT data_rate String Data within this group are stored at the data rate of the source photon events. (varies by detection; nominal value is sixty thousand per second, derived from laser_rate * photons_per_shot * beams_per_pce; where laser_rate=10000, photons_per_shot=3, beams_per_pce=2.) strong band2_width /atlas/pce3/altimetry/delta_time long_name String Band2 Width units String seconds source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band2. coordinates String ../delta_time band1_offset /atlas/pce3/altimetry/delta_time long_name String Band1 Offset source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band1. coordinates String ../delta_time units String seconds band1_width /atlas/pce3/altimetry/delta_time long_name String Band1 Width source String L1A ATBD contentType String physicalMeasurement description String Width of downlink band1. coordinates String ../delta_time units String seconds alt_rw_width /atlas/pce3/altimetry/delta_time long_name String Altimetric Range Window Width units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds from the range window start and range window stop coordinates String ../delta_time hist /atlas/pce3/altimetry/delta_time /atlas/pce3/altimetry/ds_hist long_name String Center-aligned TOF Histogram units String counts source String ATL02 contentType String qualityInformation description String Per-major frame, peak-aligned, windowed time-of-flight histograms. coordinates String ../ds_hist ../delta_time alt_rw_start /atlas/pce3/altimetry/delta_time long_name String Altimetric Range Window Start units String seconds source String ATL01/atlas/pcex/a_pmf_algorithm_science and L1B ATBD conversion contentType String referenceInformation description String The number of seconds between the transmit pulse and the start of the altimetric range window for the beam coordinates String ../delta_time band2_offset /atlas/pce3/altimetry/delta_time long_name String Band2 Offset units String seconds source String L1A ATBD contentType String physicalMeasurement description String Downlink band offset (DLBO) for band2. coordinates String ../delta_time n_mf_ph /atlas/pce3/altimetry/delta_time long_name String Number of photons units String counts source String Derived contentType String auxiliaryInformation description String Number of photons within each major frame. coordinates String ../delta_time ph_ndx_beg /atlas/pce3/altimetry/delta_time long_name String Photon Index Begin units String counts source String Derived contentType String auxiliaryInformation description String Index (1-based) within the photon-rate data of the first photon within each major frame. coordinates String ../delta_time Description String The PCE Altimetry Science Packet specific to a beam (PCEx_ALT_SCI_TLM_MID in APID 1254, 1264, 1274 sequence flag 01 (once per major frame). (see ICESat-2-MEB-SPEC-0875, section 5.12, Spacewire: Major Frame Packet Data Format data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) photons delta_time 11252817 delta_time /atlas/pce3/altimetry/strong/photons/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The Time of Day for the specific Transmit (TX) pulse associated with the Received (RX) event. (see L1B ATBD section 5 time of flight), relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ph_id_count /atlas/pce3/altimetry/strong/photons/delta_time long_name String photon event counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String photon event counter is part of photon ID and will count from 1 for each channel until reset by laser pulse counter. If ph_id_count is 0, then there was a transmit pulse without any received photons. In this case, the transmit portion of the alt_science packet is valid, but the receive portion is all 0s and should not be used. coordinates String delta_time ph_tof /atlas/pce3/altimetry/strong/photons/delta_time long_name String Time of Flight source String ATL02 ATBD contentType String physicalMeasurement description String Time of flight (TOF); the round trip time in seconds of the received photon relative to the beam's zero range point (ZRP). Computed from the Transmit (Tx) and Receive (Rx) Time-of-flight components and then calibrated to the centroid of the transmit pulse. coordinates String delta_time units String seconds tx_other_tof /atlas/pce3/altimetry/strong/photons/delta_time long_name String Other Transmit Time from LL units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Time of flight from the PCE-specific leading-lower (LL) threshold (tx_ll_tof) to the detected other transmit pulse edge. For PCE1, this is the time from the PCE1 LL to the Transmit Leading Upper edge (LU) threshold; for PCE2, this is the time from the PCE2 LL to the Transmit Trailing Upper edge (TU) threshold; and for PCE3, this is the time from the PCE3 LL to the Transmit Trailing Lower edge (TL) threshold. coordinates String delta_time ph_id_pulse /atlas/pce3/altimetry/strong/photons/delta_time long_name String laser pulse counter units String counts source String Derived as part of Photon ID contentType String referenceInformation description String laser pulse counter is part of photon ID and will count from 1 to 200 and reset for each new major frame (major_fram_id). If the corresponding ph_id_count is 0, then there was a transmit pulse without any received photons. coordinates String delta_time rx_band_id /atlas/pce3/altimetry/strong/photons/delta_time long_name String rx downlink band id units String counts source String ATL01/atlas/pcex/a_alt_science_ph RX data valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Flag to indicate downlink band id associated with the received rx_tof (received photon event). A value of 0 indicates the photon corresponds to band1; A value of 1 indicates the photon corresponds to band2. Corresponding parameters are band_width, band_offset and band_eventcount. coordinates String delta_time flag_meanings String band1 band2 flag_values Int8 0 1 ph_id_channel /atlas/pce3/altimetry/strong/photons/delta_time long_name String Receive channel id units String 1 source String Derived as part of Photon ID valid_min Byte 1 valid_max Byte 120 contentType String referenceInformation description String Channel number assigned for each received photon event. This is part of the photon ID. Values range from 1 to 120 to span all channels and rise/fall edges. Values 1 to 60 are for falling edge; PCE1 (1 to 20), PCE 2 (21 to 40) and PCE3 (41 to 60). Values 61 to 120 are for rising edge; PCE1 (61 to 80), PCE 2 (81 to 100) and PC3 (101 to 120). coordinates String delta_time tx_ll_tof /atlas/pce3/altimetry/strong/photons/delta_time long_name String Transmit LL time from T0 units String seconds source String ATL01/atlas/pcex/a_alt_science_ph TX data L1B ATBD section tof contentType String referenceInformation description String Transmit (Tx) Leading Lower (LL) time of flight (TOF); the round trip time in seconds from the detected lower leading edge of the transmit pulse relative to the ATLAS T0. Includes all calibrations of coarse and fine counts. coordinates String delta_time tof_flag /atlas/pce3/altimetry/strong/photons/delta_time long_name String TOF Flag units String counts source String L1B ATBD Sect 2.5.4 valid_min Int8 1 valid_max Int8 18 contentType String referenceInformation description String Time Of Flight center correction flag. Values indicate what components were used to adjust the TOF to the centroid of the Tx pulse, based on the alignment of Tx components across all 3 PCEs. 1=LL_LU_TU_TL; 2=LL_TU_TL; 3=LL_LU_TL; 4=LL_LU_TU; 5=LL_TL; 6=LL_TU; 7=LL_LU; 8=LL. Values greater than 10 indicate the same sequence of conditions indicated for a potential TEP photon. coordinates String delta_time flag_meanings String LL_LU_TU_TL LL_TU_TL LL_LU_TL LL_LU_TU LL_TL LL_TU LL_LU LL TEP_LL_LU_TU_TL TEP_LL_TU_TL TEP_LL_LU_TL TEP_LL_LU_TU TEP_LL_TL TEP_LL_TU TEP_LL_LU TEP_LL flag_values Int8 1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 pce_mframe_cnt /atlas/pce3/altimetry/strong/photons/delta_time long_name String PCE Major frame counter units String counts source String Retained from latest a_alt_science packet contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Group contains the PCE Altimetric received photon event (ph) decommutated data and its matching Transmit time tag data. Note the Transmit time tag data are repeated for each received photon event. Data is from Altimetry Science Packet (alt_sci_tlm) APID 1254, 1264, 1274 with Sequence Flag = 0 or 2. See ICESat-2-MEB-SPEC-0875, section 5.12, SPACEWIRE: TIME TAG SCIENCE DATA FORMAT data_rate String Data within this group are stored at the data rate of the source photon events. (varies by detection; nominal value is sixty thousand per second, derived from laser_rate * photons_per_shot * beams_per_pce; where laser_rate=10000, photons_per_shot=3, beams_per_pce=2.) atmosphere_s delta_time 10575 ds_hist_bin_index 467 delta_time /atlas/pce3/atmosphere_s/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_hist_bin_index /atlas/pce3/atmosphere_s/ds_hist_bin_index long_name String DS for ATM histogram bins units String 1 source String Dimension Scale valid_min Int16 1 valid_max Int16 467 contentType String referenceInformation description String Dimension scale for atmosphere histogram bins. atm_shift_amount /atlas/pce3/atmosphere_s/delta_time units String counts long_name String Atmospheric Range Window Shift source String ATL01/atlas/pcex/a_atm_hist_x and L1B ATBD section ATM contentType String referenceInformation description String The number of bins the range window start of one of the histograms was shifted to align them before they are added together. coordinates String delta_time atm_rw_start /atlas/pce3/atmosphere_s/delta_time long_name String Atmospheric Range Window Start units String seconds source String ATL01/atlas/pcex/a_atm_hist_x and L1B ATBD section ATM contentType String referenceInformation description String The number of seconds between the transmit pulse and the start of the Atmospheric range window coordinates String delta_time atm_rw_width /atlas/pce3/atmosphere_s/delta_time long_name String Atmospheric Range Window Width units String seconds source String ATL01/atlas/pcex/a_atm_hist_x and L1B ATBD section ATM contentType String referenceInformation description String The number of seconds from the Atmospheric range window start and range window stop. coordinates String delta_time pce_mframe_cnt /atlas/pce3/atmosphere_s/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_atm_hist_x contentType String referenceInformation description String Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time atm_bins /atlas/pce3/atmosphere_s/delta_time /atlas/pce3/atmosphere_s/ds_hist_bin_index long_name String Atmospheric Science Histogram units String counts source String ATL01/atlas/pcex/a_atm_hist_x contentType String referenceInformation description String The histogram bins for the Atmospheric beam.Once every 400 shots ( laser pulses). Bin 1 (clouds) is nearest to spacecraft .Bin 467 is under ground. coordinates String delta_time useflag /atlas/pce3/atmosphere_s/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DODS_EXTRA Container Unlimited_Dimension String delta_time ds_hist_bin_index Description String Contains parameters relating to the PCE Atmospheric Data Histograms. Normally 25 hz. (APID 1255, 1259, 1265, 1269, 1275, 1279). P1 S,P1 W, P2 S, P2 W, P3 S, P3 W. data_rate String Data in this group is stored at a 25hz (25 per second) rate. pmf_hk delta_time 423 delta_time /atlas/pce3/pmf_hk/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. autorestartdfccount /atlas/pce3/pmf_hk/delta_time long_name String AutoRestartDFCCount units String counts source String APID 1073, 1089, 1105 Byte 0090-0091 contentType String referenceInformation description String Number of DFC Auto Restarts coordinates String delta_time cmd_err_cntr /atlas/pce3/pmf_hk/delta_time long_name String cmd_err_cntr units String counts source String APID 1073, 1089, 1105 Byte 0012-0012 contentType String referenceInformation description String Command error counter coordinates String delta_time cmd_suc_cntr /atlas/pce3/pmf_hk/delta_time long_name String cmd_suc_cntr units String counts source String APID 1073, 1089, 1105 Byte 0013-0013 contentType String referenceInformation description String Command success counter. coordinates String delta_time activeknobstable /atlas/pce3/pmf_hk/delta_time long_name String ActiveKnobsTable units String counts source String APID 1073, 1089, 1105 Byte 0037-0037 contentType String referenceInformation description String The active knobs table. coordinates String delta_time mode /atlas/pce3/pmf_hk/delta_time long_name String Mode units String counts source String APID 1073, 1089, 1105 Byte 0036-0036 valid_min Byte 0 valid_max Byte 5 contentType String referenceInformation description String PCE Mode. 0=STBY; 1=Science; 2=Test; 3=Manual; 4=Radio; 5=Unknown coordinates String delta_time flag_meanings String STBY Science Test Manual Radio Test flag_values Byte 0 1 2 3 4 5 DODS_EXTRA Container Unlimited_Dimension String delta_time Description String PCE Diagnostic Telemetry Packet from one of the following APIDs : 1073, 1089, 1105 (each APID is associated with a specific PCE). Packet Frequency is 1 Hertz. sxp_ssr_w delta_time 423 ds_50samples 50 delta_time /atlas/pce3/sxp_ssr_w/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the major frame, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_50samples /atlas/pce3/sxp_ssr_w/ds_50samples long_name String DS for 50 bytes units String 1 source String ATL01/atlas/pcex/a_sxp_ssr valid_min Int8 1 valid_max Int8 50 contentType String referenceInformation description String Dimension scale for an array of 50 samples. coordinates String delta_time latitude longitude latitude /atlas/pce3/sxp_ssr_w/delta_time /atlas/pce3/sxp_ssr_w/ds_50samples long_name String latitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Latitude coordinates String delta_time longitude /atlas/pce3/sxp_ssr_w/delta_time /atlas/pce3/sxp_ssr_w/ds_50samples long_name String longitude units String degrees source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Longitude coordinates String delta_time mf_cosz /atlas/pce3/sxp_ssr_w/delta_time long_name String First Major Frame cosZ units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the solar zenith angle coordinates String delta_time latitude longitude pce_mframe_cnt /atlas/pce3/sxp_ssr_w/delta_time long_name String PCE Major frame counter units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. coordinates String delta_time latitude longitude cosb /atlas/pce3/sxp_ssr_w/delta_time /atlas/pce3/sxp_ssr_w/ds_50samples long_name String cosB units String counts source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Cosine of the off-nadir angle as calculated onboard from the spacecraft information coordinates String delta_time latitude longitude srm /atlas/pce3/sxp_ssr_w/delta_time /atlas/pce3/sxp_ssr_w/ds_50samples long_name String srm units String 1 source String ATL01/atlas/pcex/a_sxp_ssr contentType String referenceInformation description String Surface type, vegetation and coastline information from the SRM. (bit 0-1 = surface type (0=ocean, 1=land, 2=sea ice, 3=land ice). Bit 2 = vegetation present, Bit 3 = coastline present) coordinates String delta_time latitude longitude DODS_EXTRA Container Unlimited_Dimension String delta_time ds_50samples Description String SBC Extrapolation Task telemetry containing Flight Science Receiver Algorithm team requested telemetry for the first set of PCE extrapolation data for a major frame.: lat, long, range, nadir angle, etc. (from APIDs 1152 thru 1157) background delta_time 84600 delta_time /atlas/pce3/background/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via L1B ATBD contentType String referenceInformation description String The time of the first TX pulse in the 50 laser pulses used for background, in seconds relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. coordinates String delta_time bg_cnt_50shot_w /atlas/pce3/background/delta_time long_name String Weak background counts units String counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w indicates for the beam the # of counted time tags (BackgroundCounts_50Shot) during the range windows associated with a set of 50 laser pulses of the major frame. coordinates String delta_time bg_cnt_50shot_s /atlas/pce3/background/delta_time units String counts long_name String Strong background counts source String ATL01/atlas/pcex/a_pmf_algorithm_science contentType String referenceInformation description String ATLAS flight s/w indicates for the beam the # of counted time tags (BackgroundCounts_50Shot) during the range windows associated with a set of 50 laser pulses of the major frame. coordinates String delta_time pce_mframe_cnt /atlas/pce3/background/delta_time long_name String PCE Major frame counter units String counts source String Derived contentType String referenceInformation description String Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID coordinates String delta_time useflag /atlas/pce3/background/delta_time long_name String Science Mode Flag units String counts source String ATL01/atlas/pcex/a_alt_sci/ valid_min Byte 0 valid_max Byte 15 contentType String referenceInformation description String Science Mode Flag. Used by ATL03 to discard non-science mode data. 0=stby, 1=science_mode, 2=test, 3=manual, 4=radio, 5=unknown, > 10=amcs_not_normal coordinates String delta_time flag_meanings String stby science test manual radio unknown unused unused unused unused stby_alt_amcs science_alt_amcs test_alt_amcs manual_alt_amcs radio_alt_amcs unknown_alt_amcs flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DODS_EXTRA Container Unlimited_Dimension String delta_time Description String The background data is specific to each beam and reported at a 50-shot rate. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) gpsr Description String Contains parameters related to the GPS Receiver. data_rate String Data within this group are stored at the data rate of the source GPS Receiver Data Packets. (nominally one per second.) carrier_amplitude delta_time 423 ds_16_slots 16 delta_time /gpsr/carrier_amplitude/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Time, in seconds since the ATLAS SDP GPS Epoch, computed from raw_gps_time_sec and subseconds in the time correlation group. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_16_slots /gpsr/carrier_amplitude/ds_16_slots long_name String DS for 16 slots units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 16 contentType String referenceInformation description String Dimension scale representing each of the 16 slots. noise_ratio /gpsr/carrier_amplitude/delta_time /gpsr/carrier_amplitude/ds_16_slots units String dBHz long_name String CADR Carrier to Noise Power Density Ratio source String ATL01/sc3/gpsr/carrier_amplitude converted contentType String referenceInformation description String Carrier Amplitude Data Record (CADR) - Carrier to Noise Power Density Ratio. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time num_valid_slots /gpsr/carrier_amplitude/delta_time long_name String Number of slots filled units String counts source String ATL01/sc3/gpsr/carrier_amplitude/dfh/raw_num_recs valid_min Int8 0 valid_max Int8 24 contentType String referenceInformation description String Number of the 16 available slots filled by telemetry. Data values after the number of valid slots are filled with 0. Note: Valid data records will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 16, then the remaining unused data fields within the arrays will be zero-filled. coordinates String delta_time antenna_id /gpsr/carrier_amplitude/delta_time /gpsr/carrier_amplitude/ds_16_slots long_name String CADR Antenna Identifier units String 1 source String ATL01/sc3/gpsr/carrier_amplitude valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Carrier Amplitude Data Record (CADR) - Antenna Identifier. 0 = First Antenna 1 = Second Antenna (invalid for present receiver) All other values invalid. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time flag_meanings String first_antenna second_antenna flag_values Int8 0 1 signal_type /gpsr/carrier_amplitude/delta_time /gpsr/carrier_amplitude/ds_16_slots source String ATL01/sc3/gpsr/carrier_amplitude valid_min Int8 0 valid_max Int8 6 contentType String referenceInformation description String Carrier Amplitude Data Record (CADR) - GPS Signal Type. 0 = GPS L1 C/A 1 = GPS L1 P 2 = GPS L2 C/A (N/A for present receiver) 3 = GPS L2 P 4 = GPS L2 CM 5 = GPS L2 CL (N/A for present receiver) 6 = No signal processing on this channel All other values invalid. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time flag_meanings String gps_l1a_ca gps_l1_p gps_l2_ca gps_l2_p gps_l2_cm gps_l2_cl no_signal_processing flag_values Int8 0 1 2 3 4 5 6 long_name String CADR GPS Signal Type units String 1 constell_id /gpsr/carrier_amplitude/delta_time /gpsr/carrier_amplitude/ds_16_slots long_name String CADR Constellation ID units String counts source String ATL01/sc3/gpsr/carrier_amplitude contentType String referenceInformation description String Carrier Amplitude Data Record (CADR) - Constellation ID - Single Frequency Channel 1-24 (0 = GPS Constellation; All other values invalid). Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time channel_num /gpsr/carrier_amplitude/delta_time /gpsr/carrier_amplitude/ds_16_slots long_name String CADR Channel Number units String counts source String ATL01/sc3/gpsr/carrier_amplitude valid_min Int8 0 valid_max Int8 23 contentType String referenceInformation description String Carrier Amplitude Data Record (CADR) - Channel Number. 0 to 23; All other values invalid. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time carrier_amp /gpsr/carrier_amplitude/delta_time /gpsr/carrier_amplitude/ds_16_slots long_name String CADR Carrier Amplitude units String dB source String ATL01/sc3/gpsr/carrier_amplitude converted contentType String referenceInformation description String Carrier Amplitude Data Record (CADR) - Carrier Amplitude - Multiple Frequency Processing. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time sv_id /gpsr/carrier_amplitude/delta_time /gpsr/carrier_amplitude/ds_16_slots long_name String CADR Space Vehicle ID units String counts source String ATL01/sc3/gpsr/carrier_amplitude valid_min Int8 0 valid_max Int8 32 contentType String referenceInformation description String Carrier Amplitude Data Record (CADR) - Space Vehicle ID. (0 = No signal acquisition or tracking; 1-32 = GPS SVs. All other values invalid). Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_16_slots Description String Contains parameters related to Carrier Amplitude Data Record (CADR). data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) carrier_phase delta_time 423 ds_24_slots 24 ds_24_slots /gpsr/carrier_phase/ds_24_slots units String 1 long_name String DS for 24 slots source String Dimension Scale valid_min Int8 1 valid_max Int8 24 contentType String referenceInformation description String Dimension scale representing each of the 24 slots. delta_time /gpsr/carrier_phase/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Time, in seconds since the ATLAS SDP GPS Epoch, computed from raw_gps_time_sec and subseconds in the time correlation group. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. delta_range /gpsr/carrier_phase/delta_time /gpsr/carrier_phase/ds_24_slots long_name String CRPDR Delta Range units String meters/second source String ATL01/sc3/gpsr/carrier_phase converted contentType String referenceInformation description String Carrier Phase Data Record (CrPDR) - Delta Range. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time num_valid_slots /gpsr/carrier_phase/delta_time long_name String Number of slots filled units String counts source String ATL01/sc3/gpsr/carrier_phase/dfh_x/raw_num_recs valid_min Int8 0 valid_max Int8 24 contentType String referenceInformation description String Number of the 24 available slots filled by telemetry. Data values after the number of valid slots are filled with 0. Note: Valid data records will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused data fields within the arrays will be zero-filled. coordinates String delta_time antenna_id /gpsr/carrier_phase/delta_time /gpsr/carrier_phase/ds_24_slots long_name String CRPDR Antenna Identifier units String 1 source String ATL01/sc3/gpsr/carrier_phase contentType String referenceInformation description String Carrier Phase Data Record (CrPDR) - Antenna Identifier. 0 = First Antenna 1 = Second Antenna (invalid for present receiver) All other values invalid. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time flag_meanings String first_antenna second_antenna flag_values Int8 0 1 constell_id /gpsr/carrier_phase/delta_time /gpsr/carrier_phase/ds_24_slots long_name String CRPDR Constellation ID units String counts source String ATL01/sc3/gpsr/carrier_phase contentType String referenceInformation description String Carrier Phase Data Record (CrPDR) - Constellation ID - Single Frequency Channel 1-24 (0 = GPS Constellation; All other values invalid). Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time signal_type /gpsr/carrier_phase/delta_time /gpsr/carrier_phase/ds_24_slots long_name String CRPDR GPS Signal Type units String 1 source String ATL01/sc3/gpsr/carrier_phase valid_min Int8 0 valid_max Int8 6 contentType String referenceInformation description String Carrier Phase Data Record (CrPDR) - GPS Signal Type. 0 = GPS L1 C/A 1 = GPS L1 P 2 = GPS L2 C/A (N/A for present receiver) 3 = GPS L2 P 4 = GPS L2 CM 5 = GPS L2 CL (N/A for present receiver) 6 = No signal processing on this channel All other values invalid. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time flag_meanings String gps_l1a_ca gps_l1_p gps_l2_ca gps_l2_p gps_l2_cm gps_l2_cl no_signal_processing flag_values Int8 0 1 2 3 4 5 6 deter_f /gpsr/carrier_phase/delta_time /gpsr/carrier_phase/ds_24_slots long_name String CRPDR Deterioration Flag units String 1 source String ATL01/sc3/gpsr/carrier_phase valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Carrier Phase Data Record (CrPDR) - Deterioration Flag. 0= Carrier Loop Lock Steady 1 = Carrier Loop Lock Unsteady (Measurement data may be deteriorated). Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time flag_meanings String steady unsteady flag_values Int8 0 1 carrier_c_int /gpsr/carrier_phase/delta_time /gpsr/carrier_phase/ds_24_slots long_name String CRPDR Integer Carrier Cycle Counter units String counts source String ATL01/sc3/gpsr/carrier_phase contentType String referenceInformation description String Carrier Phase Data Record (CrPDR) - Integer Carrier Cycle Counter - Note: At the beginning of each track the integer carrier cycle count starts with 0. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time carrier_c_fract /gpsr/carrier_phase/delta_time /gpsr/carrier_phase/ds_24_slots units String degrees long_name String CRPDR Carrier Cycle Fraction source String ATL01/sc3/gpsr/carrier_phase converted contentType String referenceInformation description String Carrier Phase Data Record (CrPDR) - Carrier Cycle Fraction - Fraction corresponding to 360 degrees divided by 4096. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time channel_num /gpsr/carrier_phase/delta_time /gpsr/carrier_phase/ds_24_slots long_name String CRPDR Channel Number units String counts source String ATL01/sc3/gpsr/carrier_phase valid_min Int8 0 valid_max Int8 23 contentType String referenceInformation description String Carrier Phase Data Record (CrPDR) - Channel Number. 0 to 23; All other values invalid. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time sv_id /gpsr/carrier_phase/delta_time /gpsr/carrier_phase/ds_24_slots long_name String CRPDR Space Vehicle ID units String counts source String ATL01/sc3/gpsr/carrier_phase valid_min Int8 0 valid_max Int8 32 contentType String referenceInformation description String Carrier Phase Data Record (CrPDR) - Space Vehicle ID. (0 = No signal acquisition or tracking; 1-32 = GPS SVs. All other values invalid). Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_24_slots Description String Contains parameters related to the GPSR Carrier Phase Data Record (CrPDR). data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) channel_status delta_time 423 ds_24_slots 24 ds_24_slots /gpsr/channel_status/ds_24_slots long_name String DS for 24 slots units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 24 contentType String referenceInformation description String Dimension scale representing each of the 24 slots. delta_time /gpsr/channel_status/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Time, in seconds since the ATLAS SDP GPS Epoch, computed from raw_gps_time_sec and subseconds in the time correlation group. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. code_loop_bw /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Code Loop Bandwidth units String counts source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 127 contentType String referenceInformation description String Channel Status Record (CSR) - Index of actual code loop bandwidth setting - Single Frequency Channel 1-24, Value = 0; Multiple Settings are not applicable for this parameter type. All other values invalid coordinates String delta_time code_loop_corr_ff /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Code Loop Correlator Spacing Final Flag units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Code Loop Correlator Spacing (CdLCS) Final Flag (FF) - Single Frequency Channel 1-24. 0 = Code loop correlator not final, 1 = Final code loop correlator applied. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_final applied flag_values Int8 0 1 code_phase_deter /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Code Phase Deterioration units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Code Phase Deterioration (CdPD) - Single Frequency Channel 1-24. 0 = No deterioration, 1 = Measurement quality deterioration. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String no_deterioration deterioration flag_values Int8 0 1 carrier_loop_int_t_ff /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Carrier Loop Int Time Final Flag units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Carrier Loop Int Time (CrLIT) Final Flag (FF) - Single Frequency Channel 1-24. 0 = Carrier loop integration time not final, 1 = Final carrier loop integration time applied. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_final applied flag_values Int8 0 1 nav_d_sync /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Navigation Data Sync Status units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 3 contentType String referenceInformation description String Channel Status Record (CSR) - Navigation Data Sync Status - Single Frequency Channel 1-24. 0 = Nav Data Not Synchronized, 1 = Nav Data Synchronized, Data Stream Not Inverted, 3 = Nav Data Synchronized, Data Stream Inverted. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_synced synced_not_inverted synced_inverted flag_values Int8 0 1 3 num_valid_slots /gpsr/channel_status/delta_time long_name String Number of slots filled units String counts source String ATL01/sc4/gpsr/channel_status/dfh/raw_num_recs valid_min Int8 0 valid_max Int8 24 contentType String referenceInformation description String Number of the 24 available slots filled by telemetry. Data values after the number of valid slots are filled with 0. Note: Valid data records will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused data fields within the arrays will be zero-filled. coordinates String delta_time logical_track_state /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Logical Tracking State units String counts source String ATL01/sc4/gpsr/channel_status contentType String referenceInformation description String Channel Status Record (CSR) - Logical Tracking State - Single Frequency Channel 1-24. See Appendix C within DN-ICESAT2-SYS-024 for enumerated values. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time carrier_loop_int_t /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Carrier Loop Int Time units String counts source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 24 contentType String referenceInformation description String Channel Status Record (CSR) - Index of actual carrier loop integration time setting - Single Frequency Channel 1-24. Value = 0; Multiple Settings are not applicable for this parameter type. All other values invalid. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time carrier_ph_deter /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Carrier Phase Deterioration units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Carrier Phase Deterioration; 0 = No deterioration, 1 = Measurement quality deterioration. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String no_deterioration deterioration flag_values Int8 0 1 carrier_loop_bw_ff /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Carrier Loop Bandwidth Final Flag units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Carrier Loop Bandwidth (CrLB) Final Flag (FF) - Single Frequency Channel 1-24. 0 = Carrier loop bandwidth not final, 1 = Final carrier bandwidth time applied. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_final applied flag_values Int8 0 1 antenna_id /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Antenna Identifier units String 1 source String ATL01/sc4/gpsr/channel_status contentType String referenceInformation description String Channel Status Record (CSR) - Antenna Identifier. 0 = First Antenna 1 = Second Antenna (invalid for present receiver) All other values invalid. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String first_antenna second_antenna flag_values Int8 0 1 code_loop_int_t_ff /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Code Loop Int Time Final Flag units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Code Loop Int Time Final (CdLIT) Flag (FF) - Single Frequency Channel 1-24. 0 = Code loop integration time not final, 1 = Final code loop integration time applied. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_final applied flag_values Int8 0 1 code_loop_int_t /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Code Loop Int Time units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 24 contentType String referenceInformation description String Channel Status Record (CSR) - Index of actual code loop integration time setting - Single Frequency Channel 1-24. Value = 0; Multiple Settings are not applicable for this parameter type. All other values invalid. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time code_loop_bw_ff /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Code Loop Bandwidth Final Flag units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Code Loop Bandwidth (CdLB) Final Flag (FF) - Single Frequency Channel 1-24. 0 = Code loop bandwidth not final, 1 = Final code bandwidth time applied. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_final applied flag_values Int8 0 1 code_loop_lock /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Code Loop Lock units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Code Loop Lock (CdLL) - Single Frequency Channel 1-24. 0 = Not locked, 1 = Locked. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_locked locked flag_values Int8 0 1 carrier_loop_lock /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Carrier Loop Lock (CrLL) - Single Frequency Channel 1-24. 0 = Not locked, 1 = Locked. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_locked locked flag_values Int8 0 1 long_name String CSR Carrier Loop Lock units String 1 constell_id /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Constellation ID units String counts source String ATL01/sc4/gpsr/channel_status contentType String referenceInformation description String Channel Status Record (CSR) - Constellation ID - Single Frequency Channel 1-24 (0 = GPS Constellation; All other values invalid). Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time carrier_loop_bw /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Carrier Loop Bandwidth units String counts source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 24 contentType String referenceInformation description String Channel Status Record (CSR) - Index of actual carrier loop bandwidth setting - Single Frequency Channel 1-24 Value = 0; Multiple Settings are not applicable for this parameter type. All other values invalid. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time signal_type /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR GPS Signal Type units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 6 contentType String referenceInformation description String Channel Status Record (CSR) - GPS Signal Type. 0 = GPS L1 C/A 1 = GPS L1 P 2 = GPS L2 C/A (N/A for present receiver) 3 = GPS L2 P 4 = GPS L2 CM 5 = GPS L2 CL (N/A for present receiver) 6 = No signal processing on this channel All other values invalid. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String gps_l1a_ca gps_l1_p gps_l2_ca gps_l2_p gps_l2_cm gps_l2_cl no_signal_processing flag_values Int8 0 1 2 3 4 5 6 code_loop_mode /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Code Loop Mode units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 3 contentType String referenceInformation description String Channel Status Record (CSR) - Code Loop Mode - Single Frequency Channel 1-24. 0 = No code loop activities, 1 = Code acquisition ongoing, 2 = Code tracking ongoing, 3 = Code acquisition error. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String no_activities acquisition tracking acq_error flag_values Int8 0 1 2 3 carrier_loop_thres_ff /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Carrier Loop Threshold (CrLT) Final Flag (FF) - Single Frequency Channel 1-24. 0 = Carrier loop threshold not final, 1 = Final carrier loop threshold applied. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_final applied flag_values Int8 0 1 long_name String CSR Carrier Loop Threshold Final Flag units String 1 code_loop_thres_ff /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Code Loop Threshold Final Flag units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Code Loop Threshold (CdLT) Final Flag (FF) - Single Frequency Channel 1-24. 0 = Code loop threshold not final, 1 = Final code loop threshold applied. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_final applied flag_values Int8 0 1 channel_num /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Channel Number units String counts source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 23 contentType String referenceInformation description String Channel Status Record (CSR) - Channel Number. 0 to 23; All other values invalid. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time carrier_loop_mode /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Carrier Loop Mode units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 3 contentType String referenceInformation description String Channel Status Record (CSR) - Carrier Loop Mode) - Single Frequency Channel 1-24. 0 = No carrier loop activities; 1 = Carrier acquisition ongoing; 2 = Carrier tracking ongoing; 3 = Carrier acquisition error. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String no_activities acquisition tracking acq_error flag_values Int8 0 1 2 3 carrier_loop_disc_ff /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Carrier Loop Discriminator Final Flag units String 1 source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Channel Status Record (CSR) - Carrier Loop Discriminator (CrLD) Final Flag (FF) - Single Frequency Channel 1-24. 0 = Carrier loop discriminator not final, 1 = Final carrier loop discriminator applied. Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time flag_meanings String not_final applied flag_values Int8 0 1 sv_id /gpsr/channel_status/delta_time /gpsr/channel_status/ds_24_slots long_name String CSR Space Vehicle ID units String counts source String ATL01/sc4/gpsr/channel_status valid_min Int8 0 valid_max Int8 32 contentType String referenceInformation description String Channel Status Record (CSR) - Space Vehicle ID. (0 = No signal acquisition or tracking; 1-32 = GPS SVs. All other values invalid). Note: num_valid_slots indicate the number of channel that actual valid to use. the remaining unused data fields are zero-filled. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_24_slots Description String Contains parameters related to Channel Status record (CSR). data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) code_phase delta_time 423 ds_24_slots 24 ds_24_slots /gpsr/code_phase/ds_24_slots long_name String DS for 24 slots units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 24 contentType String referenceInformation description String Dimension scale representing each of the 24 slots. delta_time /gpsr/code_phase/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Time, in seconds since the ATLAS SDP GPS Epoch, computed from raw_gps_time_sec and subseconds in the time correlation group. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. num_valid_slots /gpsr/code_phase/delta_time long_name String Number of slots filled units String counts source String ATL01/sc3/gpsr/code_phase/dfh_x/raw_num_recs valid_min Int8 0 valid_max Int8 24 contentType String referenceInformation description String Number of the 24 available slots filled by telemetry. Data values after the number of valid slots are filled with 0. Note: Valid data records will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused data fields within the arrays will be zero-filled. coordinates String delta_time code_chip_count /gpsr/code_phase/delta_time /gpsr/code_phase/ds_24_slots long_name String CDPDR Chip Count units String counts source String ATL01/sc3/gpsr/code_phase contentType String referenceInformation description String Code Phase Data Record (CdPDR) - Number of Code Chips Since Start of GPS Week. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time antenna_id /gpsr/code_phase/delta_time /gpsr/code_phase/ds_24_slots long_name String CDPDR Antenna Identifier units String 1 source String ATL01/sc3/gpsr/code_phase valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Code Phase Data Record (CdPDR) - Antenna Identifier. 0 = First Antenna 1 = Second Antenna (invalid for present receiver) All other values invalid. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time flag_meanings String first_antenna second_antenna flag_values Int8 0 1 smooth_flg /gpsr/code_phase/delta_time /gpsr/code_phase/ds_24_slots long_name String CDPDR Smoothing Flag units String 1 source String ATL01/sc3/gpsr/code_phase valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Code Phase Data Record (CdPDR) - Smoothing Flag. 0 = Smoothing Not Applied 1 = Carrier phase-based smoothing applied for the reported code phase. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time flag_meanings String not_applied applied flag_values Int8 0 1 code_chip_fract /gpsr/code_phase/delta_time /gpsr/code_phase/ds_24_slots long_name String CDPDR Fractional Chip Count units String counts source String ATL01/sc3/gpsr/code_phase converted contentType String referenceInformation description String Code Phase Data Record (CdPDR) - Fractional Portion of Number of Code Chips Since Start of GPS Week. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time constell_id /gpsr/code_phase/delta_time /gpsr/code_phase/ds_24_slots long_name String CDPDR Constellation ID units String counts source String ATL01/sc3/gpsr/code_phase contentType String referenceInformation description String Code Phase Data Record (CdPDR) - Constellation ID - Single Frequency Channel 1-24 (0 = GPS Constellation; All other values invalid). Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time signal_type /gpsr/code_phase/delta_time /gpsr/code_phase/ds_24_slots long_name String CDPDR GPS Signal Type units String 1 source String ATL01/sc3/gpsr/code_phase valid_min Int8 0 valid_max Int8 6 contentType String referenceInformation description String Code Phase Data Record (CdPDR) - GPS Signal Type. 0 = GPS L1 C/A 1 = GPS L1 P 2 = GPS L2 C/A (N/A for present receiver) 3 = GPS L2 P 4 = GPS L2 CM 5 = GPS L2 CL (N/A for present receiver) 6 = No signal processing on this channel All other values invalid. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time flag_meanings String gps_l1a_ca gps_l1_p gps_l2_ca gps_l2_p gps_l2_cm gps_l2_cl no_signal_processing flag_values Int8 0 1 2 3 4 5 6 deter_f /gpsr/code_phase/delta_time /gpsr/code_phase/ds_24_slots long_name String CDPDR Deterioration Flag units String 1 source String ATL01/sc3/gpsr/code_phase valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Code Phase Data Record (CdPDR) - Deterioration Flag. 0= Carrier Loop Lock Steady 1 = Carrier Loop Lock Unsteady (Measurement data may be deteriorated). Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time flag_meanings String steady unsteady flag_values Int8 0 1 channel_num /gpsr/code_phase/delta_time /gpsr/code_phase/ds_24_slots long_name String CDPDR Channel Number units String counts source String ATL01/sc3/gpsr/code_phase valid_min Int8 0 valid_max Int8 23 contentType String referenceInformation description String Code Phase Data Record (CdPDR) - Channel Number. 0 to 23; All other values invalid. Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time sv_id /gpsr/code_phase/delta_time /gpsr/code_phase/ds_24_slots long_name String CDPDR Space Vehicle ID units String counts source String ATL01/sc3/gpsr/code_phase valid_min Int8 0 valid_max Int8 32 contentType String referenceInformation description String Code Phase Data Record (CdPDR) - Space Vehicle ID. (0 = No signal acquisition or tracking; 1-32 = GPS SVs. All other values invalid). Note: Valid data records (num_valid_slots) will only be included for the amount of SFCs being tracked by the GPSR. If the tracked SFCs < 24, then the remaining unused CSR data fields within the ancillary packet will be zero-filled. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_24_slots Description String Contains parameters related to Code Phase Data Record (CdPDR). data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) navigation delta_time 423 longitude /gpsr/navigation/delta_time long_name String NAV Longitude (WGS84) units String degrees_east source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Longitude (WGS84) coordinates String delta_time latitude /gpsr/navigation/delta_time long_name String NAV Latitude (WGS84) units String degrees_north source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Latitude (WGS84) coordinates String delta_time delta_time /gpsr/navigation/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Time, in seconds since the ATLAS SDP GPS Epoch, computed from raw_gps_time_sec and subseconds in the time correlation group. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. tdop /gpsr/navigation/delta_time long_name String GPSR Time Dilution of Precision units String meters source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String GPSR - Time Dilution of Precision. Values greater than 655.34 are saturated to 655.34; Value set to 655.35 when NSM = 1 or in the case NSM = 5 with fewer than 4 SVs available. coordinates String delta_time latitude longitude vertical_speed /gpsr/navigation/delta_time long_name String NAV Vertical Speed units String meters/second source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Vertical Speed coordinates String delta_time latitude longitude nsm /gpsr/navigation/delta_time long_name String GPSR Navigation Solution Method (NSM) units String 1 source String ATL01/sc4/gpsr/navigation valid_min Int8 1 valid_max Int8 7 contentType String referenceInformation description String GPSR - Navigation Solution Method. 1 = Propagated 2 = Cold Start - First Nav Fix 3 = Cold Start - Least Squares Method w/ no GDOP Optimization 4 = Least Squares Method w/ all Visible SVs 5 = Kalman Filter Method (Normal Operation) 7 = Invalid Navigation Solution All other values invalid coordinates String delta_time latitude longitude flag_meanings String propagated cold_lsq_no_gdop lsqm_w_svs normal_lsqm normal_kalman unused invalid_solution flag_values Int8 1 2 3 4 5 6 7 velocity_error_x /gpsr/navigation/delta_time long_name String NAV Velocity Error X units String meters/second source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated X velocity error coordinates String delta_time latitude longitude max_ura /gpsr/navigation/delta_time long_name String NAV Maximum User Range Accuracy (URA) units String counts source String ATL01/sc4/gpsr/navigation valid_min Int8 -16 valid_max Int8 15 contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Maximum User Range Accuracy (-16 means that no URA is available) coordinates String delta_time latitude longitude pdop /gpsr/navigation/delta_time long_name String NAV Position Dilution of Precision units String counts source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Position Dilution of Precision. Values greater than 655.34 are saturated to 655.34; Value set to 655.35 when NSM = 1 or in the case NSM = 5 with fewer than 4 SVs available. coordinates String delta_time latitude longitude gps_time_subsec /gpsr/navigation/delta_time long_name String TCDR GPS Time (Subseconds) units String 1/4294967296 seconds source String ATL01/sc4/gpsr/navigation contentType String referenceInformation description String Time Correlation Data Record (TCDR) - Subseconds portion of the GPS Time (GPST) representation of the synchronization time stamp. Total seconds elapsed since GPS epoch (6-Jan-1980 00:00:00) starting with 0. (Same data that is provided to ATLAS in RT) coordinates String delta_time latitude longitude n_svs /gpsr/navigation/delta_time long_name String NAV Number of SVs in Solution units String counts source String ATL01/sc4/gpsr/navigation valid_min Int8 0 valid_max Int8 8 contentType String referenceInformation description String Navigation Solution Data Record (NAV) - The number of SVs the receiver was able to use for the Navigation Solution computation, i.e. SVs for which code and carrier phase measurements and Ephemeris data were available coordinates String delta_time latitude longitude velocity_error_z /gpsr/navigation/delta_time long_name String NAV Velocity Error Z units String meters/second source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated Z velocity error coordinates String delta_time latitude longitude max_curve_fit /gpsr/navigation/delta_time long_name String NAV Maximum Curve Fit units String 1 source String ATL01/sc4/gpsr/navigation valid_min Int8 0 valid_max Int8 15 contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Maximum Curve Fit interval taken from all SVs used in current navigation solution coordinates String delta_time latitude longitude flag_meanings String 4h 6h 8h 14h 26h 50h 74h 98h 122h 146h no_curve_fit flag_values Int8 0 1 2 3 4 5 6 7 8 9 15 position_y /gpsr/navigation/delta_time long_name String NAV Position Y (WGS84) units String meters source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated Y position of the platform reference point according to the Navigation Solution Method (NSM) at the point in time of GPST (WGS84) coordinates String delta_time latitude longitude position_error_y /gpsr/navigation/delta_time long_name String NAV Position Error Y units String meters source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated Y position error coordinates String delta_time latitude longitude velocity_y /gpsr/navigation/delta_time long_name String NAV Velocity Y (WGS84) units String meters/second source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated Y velocity of the platform reference point according to the Navigation Solution Method (NSM) at the point in time of GPST (WGS84) coordinates String delta_time latitude longitude position_x /gpsr/navigation/delta_time long_name String NAV Position X (WGS84) units String meters source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated X position of the platform reference point according to the Navigation Solution Method (NSM) at the point in time of GPST (WGS84) coordinates String delta_time latitude longitude gps_time_sec /gpsr/navigation/delta_time long_name String TCDR GPS Time (Seconds) units String seconds source String ATL01/sc4/gpsr/navigation contentType String referenceInformation description String Time Correlation Data Record (TCDR) - GPS Time (GPST) representation of the synchronization time stamp. Total seconds elapsed since GPS epoch (6-Jan-1980 00:00:00) starting with 0. (Same data that is provided to ATLAS in RT) coordinates String delta_time latitude longitude position_z /gpsr/navigation/delta_time long_name String NAV Position Z (WGS84) units String meters source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated Z position of the platform reference point according to the Navigation Solution Method (NSM) at the point in time of GPST (WGS84) coordinates String delta_time latitude longitude velocity_x /gpsr/navigation/delta_time long_name String NAV Velocity X (WGS84) units String meters/second source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated X velocity of the platform reference point according to the Navigation Solution Method (NSM) at the point in time of GPST (WGS84) coordinates String delta_time latitude longitude gdop /gpsr/navigation/delta_time long_name String NAV Geometric Dilution of Precision units String meters source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Geometric Dilution of Precision (Values greater than 655.34 m are saturated to 655.34 m.) coordinates String delta_time latitude longitude clock_freq_error /gpsr/navigation/delta_time long_name String NAV Receiver Clock Frequency Error units String seconds source String ATL01/sc4/gpsr/navigation contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Receiver Clock Frequency Error coordinates String delta_time gnss_time_error /gpsr/navigation/delta_time long_name String NAV GNSS System Time Error units String seconds source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - GNSS System Time Error coordinates String delta_time latitude longitude velocity_error_y /gpsr/navigation/delta_time long_name String NAV Velocity Error Y units String meters/second source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated Y velocity error coordinates String delta_time latitude longitude position_error_x /gpsr/navigation/delta_time long_name String NAV Position Error X units String meters source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated X position error coordinates String delta_time latitude longitude position_qa /gpsr/navigation/delta_time long_name String NAV Time Quality Index units String seconds source String ATL01/sc4/gpsr/navigation valid_min Int16 0 valid_max Int16 4095 contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Time Quality Index; Values greater than 4095 ns are saturated to 4095 ns. coordinates String delta_time latitude longitude velocity_z /gpsr/navigation/delta_time long_name String NAV Velocity Z (WGS84) units String meters/second source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated Z velocity of the platform reference point according to the Navigation Solution Method (NSM) at the point in time of GPST (WGS84) coordinates String delta_time latitude longitude h_ell /gpsr/navigation/delta_time units String meters long_name String NAV Height Above Reference Ellipsoid (WGS84) source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Height Above Reference Ellipsoid (WGS84) coordinates String delta_time latitude longitude position_error_z /gpsr/navigation/delta_time long_name String NAV Position Error Z units String meters source String ATL01/sc4/gpsr/navigation converted contentType String referenceInformation description String Navigation Solution Data Record (NAV) - Estimated Z position error coordinates String delta_time latitude longitude DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters related to navigation solution. data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) noise_histogram delta_time 423 ds_chain 2 ds_chain /gpsr/noise_histogram/ds_chain long_name String DS for each chain units String 1 source String Dimension Scale valid_min Int8 1 valid_max Int8 2 contentType String referenceInformation description String Dimension scale representing each of the 2 chains. delta_time /gpsr/noise_histogram/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Time, in seconds since the ATLAS SDP GPS Epoch, computed from raw_gps_time_sec and subseconds in the time correlation group. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. chain_index /gpsr/noise_histogram/delta_time /gpsr/noise_histogram/ds_chain long_name String NHDR Chain Index - Chain 1-2 units String 1 source String ATL01/sc3/gpsr/noise_histogram valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Noise Histogram Data Record (NHDR) - Chain Index - Down Conversion Chain Identifier 1-2 coordinates String delta_time flag_meanings String antenna1_l1carrier antenna1_l2carrier flag_values Int8 0 1 norm_neg_quad_phase_m1 /gpsr/noise_histogram/delta_time /gpsr/noise_histogram/ds_chain long_name String NHDR Normalized Negative Quadrature-Phase Counts M1 - Chain 1-2 units String counts source String ATL01/sc3/gpsr/noise_histogram contentType String referenceInformation description String Noise Histogram Data Record (NHDR) - Normalized signal level detector counts of the negative Quadrature-phase samples (M1) - Down Conversion Chain Identifier 1-2 coordinates String delta_time norm_pos_quad_phase_p3 /gpsr/noise_histogram/delta_time /gpsr/noise_histogram/ds_chain long_name String NHDR Normalized Positive Quadrature-Phase Counts P3 - Chain 1-2 units String counts source String ATL01/sc3/gpsr/noise_histogram contentType String referenceInformation description String Noise Histogram Data Record (NHDR) - Normalized signal level detector counts of the positive Quadrature-phase samples (P3) - Down Conversion Chain Identifier 1-2 coordinates String delta_time norm_pos_quad_phase_p1 /gpsr/noise_histogram/delta_time /gpsr/noise_histogram/ds_chain long_name String NHDR Normalized Positive Quadrature-Phase Counts P1 - Chain 1-2 units String counts source String ATL01/sc3/gpsr/noise_histogram contentType String referenceInformation description String Noise Histogram Data Record (NHDR) - Normalized signal level detector counts of the positive Quadrature-phase samples (P1) - Down Conversion Chain Identifier 1-2 coordinates String delta_time noise_power /gpsr/noise_histogram/delta_time /gpsr/noise_histogram/ds_chain long_name String NHDR Noise Power - Chain 1-2 units String dB source String ATL01/sc3/gpsr/noise_histogram converted contentType String referenceInformation description String Noise Histogram Data Record (NHDR) - Noise Power as seen at the input of the variable gain IF amplifier - Down Conversion Chain Identifier 1-2 coordinates String delta_time norm_pos_in_phase_p3 /gpsr/noise_histogram/delta_time /gpsr/noise_histogram/ds_chain long_name String NHDR Normalized Positive In-Phase Counts P3 - Chain 1-2 units String counts source String ATL01/sc3/gpsr/noise_histogram contentType String referenceInformation description String Noise Histogram Data Record (NHDR) - Normalized signal level detector counts of the positive In-phase samples (P3) - Down Conversion Chain Identifier 1-2 coordinates String delta_time norm_pos_in_phase_p1 /gpsr/noise_histogram/delta_time /gpsr/noise_histogram/ds_chain long_name String NHDR Normalized Positive In-Phase Counts P1 - Chain 1-2 units String counts source String ATL01/sc3/gpsr/noise_histogram contentType String referenceInformation description String Noise Histogram Data Record (NHDR) - Normalized signal level detector counts of the positive In-phase samples (P1) - Down Conversion Chain Identifier 1-2 coordinates String delta_time norm_neg_quad_phase_m3 /gpsr/noise_histogram/delta_time /gpsr/noise_histogram/ds_chain long_name String NHDR Normalized Negative Quadrature-Phase Counts M3 - Chain 1-2 units String counts source String ATL01/sc3/gpsr/noise_histogram contentType String referenceInformation description String Noise Histogram Data Record (NHDR) - Normalized signal level detector counts of the negative Quadrature-phase samples (M3) - Down Conversion Chain Identifier 1-2 coordinates String delta_time norm_neg_in_phase_m3 /gpsr/noise_histogram/delta_time /gpsr/noise_histogram/ds_chain long_name String NHDR Normalized Negative In-Phase Counts M3 - Chain 1-2 units String counts source String ATL01/sc3/gpsr/noise_histogram contentType String referenceInformation description String Noise Histogram Data Record (NHDR) - Normalized signal level detector counts of the negative In-phase samples (M3) - Down Conversion Chain Identifier 1-2 coordinates String delta_time norm_neg_in_phase_m1 /gpsr/noise_histogram/delta_time /gpsr/noise_histogram/ds_chain long_name String NHDR Normalized Negative In-Phase Counts M1 - Chain 1-2 units String counts source String ATL01/sc3/gpsr/noise_histogram contentType String referenceInformation description String Noise Histogram Data Record (NHDR) - Normalized signal level detector counts of the negative In-phase samples (M1) - Down Conversion Chain Identifier 1-2 coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_chain Description String Contains parameters related to the GPS Noise Histogram Data Record (NHDR). data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) hk delta_time 423 delta_time /gpsr/hk/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Time, in seconds since the ATLAS SDP GPS Epoch, computed from raw_gps_time_sec and subseconds in the time correlation group. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ic_tag_error /gpsr/hk/delta_time long_name String HK Instr Cache Tag Error Counter units String counts source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - Instr Cache Tag Error Counter coordinates String delta_time edac_single_bit_error /gpsr/hk/delta_time units String counts source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - MilBus I/F EDAC Single Bit Error coordinates String delta_time long_name String HK MilBus I/F EDAC Single Bit Error dc_data_error /gpsr/hk/delta_time long_name String HK Data Cache Data Error Counter units String counts source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - Data Cache Data Error Counter coordinates String delta_time register_file_errors /gpsr/hk/delta_time long_name String HK Corrected Register File Errors units String 1 source String ATL01/sc4/gpsr/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Housekeeping Parameter Report (HK) - Corrected Register File Errors coordinates String delta_time flag_meanings String no_error_detected error_detected flag_values Int8 0 1 cpu_processor_load /gpsr/hk/delta_time long_name String HK CPU Processor Load units String counts source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - CPU Load of most recent PPS interval coordinates String delta_time nsm /gpsr/hk/delta_time long_name String GPSR Navigation Solution Method (NSM) units String 1 source String ATL01/sc4/gpsr/hk valid_min Int8 0 valid_max Int8 7 contentType String referenceInformation description String GPSR - Navigation Solution Method. 1 = Propagated; 2 = Cold Start - First Nav Fix; 3 = Cold Start - Least Squares Method w/ no GDOP Optimization; 4 = Least Squares Method w/ all Visible SVs; 5 = Kalman Filter Method (Normal Operation); 7 = Invalid Navigation Solution. All other values are invalid. coordinates String delta_time flag_meanings String unknown propagated cold_first_nav cold_lsq_no_gdop lsqm_w_svs normal_kalman invalid_solution flag_values Int8 0 1 2 3 4 5 7 edac_double_bit_error /gpsr/hk/delta_time units String counts long_name String HK MilBus I/F EDAC Double Bit Error source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - MilBus I/F EDAC Double Bit Error coordinates String delta_time sram_edac_status /gpsr/hk/delta_time long_name String HK SRAM EDAC Status units String 1 source String ATL01/sc4/gpsr/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Housekeeping Parameter Report (HK) - SRAM EDAC Single bit error coordinates String delta_time flag_meanings String no_error_detected error_detected flag_values Int8 0 1 discarded_tm_packets /gpsr/hk/delta_time units String counts long_name String HK Discarded TM Packet Counter source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - Number of TM packets discarded since start of GPSR (wrapping counter). coordinates String delta_time n_svs_acquired /gpsr/hk/delta_time long_name String HK Number of SVs Being Acquired units String counts source String ATL01/sc4/gpsr/hk valid_min Int8 0 valid_max Int8 8 contentType String referenceInformation description String Housekeeping Parameter Report (HK) - GNSS satellites being acquired at the most recent PPS, i.e. channels with Multi-Frequency Tracking state 2...4 coordinates String delta_time protocol_selection_f /gpsr/hk/delta_time long_name String HK MilBus Protocol Selection Flag units String counts source String ATL01/sc4/gpsr/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Housekeeping Parameter Report (HK) - MilBus Protocol Selection Flag coordinates String delta_time transient_protocol_errors /gpsr/hk/delta_time long_name String HK MilBus Transient Protocol Error Count units String counts source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - MilBus Transient Protocol Error Count coordinates String delta_time dc_tag_error /gpsr/hk/delta_time units String counts long_name String HK Data Cache Tag Error Counter source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - Data Cache Tag Error Counter coordinates String delta_time clock_source /gpsr/hk/delta_time long_name String HK Clock Source units String 1 source String ATL01/sc4/gpsr/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Housekeeping Parameter Report (HK) - Clock Source coordinates String delta_time flag_meanings String internal_clock value_invalid flag_values Int8 0 1 prom_edac_status /gpsr/hk/delta_time long_name String HK PROM EDAC Status units String counts source String ATL01/sc4/gpsr/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Housekeeping Parameter Report (HK) - PROM EDAC Single bit or uncorrectable error coordinates String delta_time flag_meanings String no_error_detected error_detected flag_values Int8 0 1 front_end_t /gpsr/hk/delta_time long_name String DFH Front End Temperature units String counts source String GPSR_DFH contentType String physicalMeasurement description String GPSR Data Field Header - R/F Front End Temperature (raw counts; not EU-converted) coordinates String delta_time n_svs_used /gpsr/hk/delta_time long_name String HK Number of SVs Used for PVT units String counts source String ATL01/sc4/gpsr/hk valid_min Int8 0 valid_max Int8 8 contentType String referenceInformation description String Housekeeping Parameter Report (HK) - GNSS satellites being used for PVT at the PPS before the most recent PPS coordinates String delta_time n_svs_wo_all /gpsr/hk/delta_time long_name String HK Number of Tracked SVs w/o All Components in Tracking State units String counts source String ATL01/sc4/gpsr/hk valid_min Int8 0 valid_max Int8 8 contentType String referenceInformation description String Housekeeping Parameter Report (HK) - GNSS satellites being tracked with not all signal components in a final tracking state at the most recent PPS, i.e. channels with Multi-Frequency Tracking state 5...10 (L1 C/A & P(Y)) or Multi-Frequency Tracking state 5...7 (L1 C/A & L2 CM) coordinates String delta_time transmit_buffer_occupancy /gpsr/hk/delta_time long_name String HK Transmit Buffer Occupancy units String counts source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - Number of bytes buffered for transmission coordinates String delta_time n_sv_w_all /gpsr/hk/delta_time long_name String HK Number of Tracked SVs w All Components in Tracking State units String counts source String ATL01/sc4/gpsr/hk valid_min Int8 0 valid_max Int8 8 contentType String referenceInformation description String Housekeeping Parameter Report (HK) - GNSS satellites being tracked with all signal components in final tracking state at the most recent PPS coordinates String delta_time discarded_tc_packets /gpsr/hk/delta_time units String counts long_name String HK Discarded TC Packet Counter source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - Number of TC packets discarded since start of GPSR (wrapping counter). coordinates String delta_time ic_data_error /gpsr/hk/delta_time long_name String HK Instr Cache Data Error Counter units String counts source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - Instr Cache Data Error Counter coordinates String delta_time memory_dump_status /gpsr/hk/delta_time long_name String HK Memory Dump Status units String counts source String ATL01/sc4/gpsr/hk contentType String referenceInformation description String Housekeeping Parameter Report (HK) - Number of TM packets to be generated until the current Memory Dump is finished coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters related to GPSR housekeeping. data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) time_correlation delta_time 423 delta_time /gpsr/time_correlation/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Time, in seconds since the ATLAS SDP GPS Epoch, computed from raw_gps_time_sec and subseconds in the time correlation group. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. utc_usec /gpsr/time_correlation/delta_time long_name String TCDR TCDR UTC Time - Microseconds units String usec source String ATL01/sc4/gpsr/time_correlation contentType String referenceInformation description String Time Correlation Data Record (TCDR) - UTC time representation of the synchronization time stamp. Number of microseconds of current day. coordinates String delta_time tdop /gpsr/time_correlation/delta_time long_name String GPSR Time Dilution of Precision units String meters source String ATL01/sc4/gpsr/time_correlation converted contentType String referenceInformation description String GPSR - Time Dilution of Precision. Values greater than 655.34 are saturated to 655.34; Value set to 655.35 when NSM = 1 or in the case NSM = 5 with fewer than 4 SVs available. coordinates String delta_time nsm /gpsr/time_correlation/delta_time long_name String GPSR Navigation Solution Method (NSM) units String 1 source String ATL01/sc4/gpsr/time_correlation valid_min Int8 1 valid_max Int8 7 contentType String referenceInformation description String GPSR - Navigation Solution Method. 1 = Propagated 2 = Cold Start - First Nav Fix 3 = Cold Start - Least Squares Method w/ no GDOP Optimization 4 = Least Squares Method w/ all Visible SVs 5 = Kalman Filter Method (Normal Operation) 7 = Invalid Navigation Solution All other values invalid coordinates String delta_time flag_meanings String propagated cold_lsq_no_gdop lsqm_w_svs normal_lsqm normal_kalman unused invalid_solution flag_values Int8 1 2 3 4 5 6 7 imt /gpsr/time_correlation/delta_time long_name String TCDR Instrument Measurement Time units String counts source String ATL01/sc4/gpsr/time_correlation contentType String referenceInformation description String Time Correlation Data Record (TCDR) - Time Correlation Data Record (TCDR) - Instrument Measurement Time (IMT) representation of the synchronization time stamp. IMT precisely describes how the GPSR clock oscillator behaves, and is for internal and maintenance use only. This field contains the raw 64-bit IMT value. (Be aware of possible precision loss possible when converting to seconds.) coordinates String delta_time gps_time_sec /gpsr/time_correlation/delta_time long_name String TCDR GPS Time (Seconds) units String seconds source String ATL01/sc4/gpsr/time_correlation contentType String referenceInformation description String Time Correlation Data Record (TCDR) - GPS Time (GPST) representation of the synchronization time stamp. Total seconds elapsed since GPS epoch (6-Jan-1980 00:00:00) starting with 0. (Same data that is provided to ATLAS in RT) coordinates String delta_time time_qa /gpsr/time_correlation/delta_time long_name String TCDR Time Quality Index units String nanoseconds source String ATL01/sc4/gpsr/time_correlation valid_min Int16 0 valid_max Int16 4095 contentType String referenceInformation description String Time Correlation Data Record (TCDR) - Time Quality Index. Nanoseconds; Values greater than 4095 ns are saturated to 4095 ns. coordinates String delta_time gps_time_subsec /gpsr/time_correlation/delta_time long_name String TCDR GPS Time (Subseconds) units String 1/4294967296 seconds source String ATL01/sc4/gpsr/time_correlation contentType String referenceInformation description String Time Correlation Data Record (TCDR) - Subseconds portion of the GPS Time (GPST) representation of the synchronization time stamp. Total seconds elapsed since GPS epoch (6-Jan-1980 00:00:00) starting with 0. (Same data that is provided to ATLAS in RT) coordinates String delta_time utc_days /gpsr/time_correlation/delta_time units String days long_name String TCDR TCDR UTC Time - Days source String ATL01/sc4/gpsr/time_correlation contentType String referenceInformation description String Time Correlation Data Record (TCDR) - UTC time representation of the synchronization time stamp. Number of days since 1st January 2000, 00:00:00 starting with 0. coordinates String delta_time utc_msec /gpsr/time_correlation/delta_time units String msec source String ATL01/sc4/gpsr/time_correlation contentType String referenceInformation description String Time Correlation Data Record (TCDR) - UTC time representation of the synchronization time stamp. Number of milliseconds of current day. coordinates String delta_time long_name String TCDR TCDR UTC Time - Milliseconds DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters related to GPSR time correlation data record (TCDR). data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) lrs Description String Group contains the Laser Reference System (LRS) packet decommutated data data_rate String Data within this group are stored at the nominal rate of the corresponding LRS APIDs (varies per APID). laser_centroid delta_time 211500 delta_time /lrs/laser_centroid/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Time values retrieved from the CCSDS header timestamps, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. cent_mag /lrs/laser_centroid/delta_time units String counts long_name String LRS_LCENT centroid magitude source String LRS_LCENT contentType String referenceInformation description String The 12-bit centroid magnitude. The centroids are the Transmit Laser Centroids and TAMS Centroids. coordinates String delta_time quality_f /lrs/laser_centroid/delta_time units String 1 long_name String LRS_LCENT Centroid quality source String LRS_LCENT valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Flag indicates centroids pass basic validity checks in the LRS software. 0 = valid centroids; 1 = the corresponding centroid is considered questionable (that is, the corresponding centroid should not be expected to report a valid target with full accuracy). The win parameter within this group correlates the flags to tams/laser windows. However, the correlation of the windows to the actual tams/laser spots is not guaranteed. coordinates String delta_time flag_meanings String valid questionable flag_values Int8 0 1 cent_h /lrs/laser_centroid/delta_time long_name String LRS_LCENT centroid H units String pixels source String LRS_LCENT contentType String referenceInformation description String The centroid H value. The centroids are the Transmit Laser Centroids and TAMS Centroids. coordinates String delta_time centofintbase /lrs/laser_centroid/delta_time units String counts long_name String Center of integration base source String LRS contentType String referenceInformation description String Base age of centroids relative to secondary header timestamp. This 32-bit value indicates how many 843.75 kHz time ticks of offset should be applied between the secondary header timestamp and the center_of_integration for the laser centroids reported. This time offset assumes that the secondary header timestamp represents an exact milli-second (that is, is accurate beyond the precision expressed in the timestamp). The offset is based on the LRS internal 27 MHz oscillator (divided by 32), and it can express offset from zero to more than 84 minutes with about 1.185 micro second resolution. Under normal operating conditions, the offset should never exceed 20 milli seconds (about 16875 counts). Centroid timetags offset with this value alone should be adequate for coarse geo-location, but not precision geo-location knowledge as expected for science (individual centroid offsets are required for that purpose). coordinates String delta_time trackstat_f /lrs/laser_centroid/delta_time units String 1 long_name String LRS_LCENT Tracking status source String LRS_LCENT valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Flag indicates tracking status for centroid; 1 = valid tracking of that centroid window; 0 = the corresponding window is in a searching or acquiring state (that is, the corresponding centroid should not be considered to report a valid target). The win parameter within this group correlates the flags to tams/laser windows. However, the correlation of the windows to the actual tams/laser spots is not guaranteed. coordinates String delta_time flag_meanings String acq_state track_state flag_values Int8 0 1 win /lrs/laser_centroid/delta_time long_name String Window units String 1 source String LRS_LCENT valid_min Int8 0 valid_max Int8 10 contentType String referenceInformation description String Indicates the window corresponding to each component of the centmagtime and corresponding flags. Values of 1-4 correspond to TAMS windows; values of 5-10 correspond to laser windows. Assignment of a window to a particular spot is not guaranteed. coordinates String delta_time flag_meanings String none tams0 tams1 tams2 tams3 laser1 laser2 laser3 laser4 laser5 laser6 flag_values Int8 0 1 2 3 4 5 6 7 8 9 10 cent_v /lrs/laser_centroid/delta_time long_name String LRS_LCENT centroid V units String pixels source String LRS_LCENT contentType String referenceInformation description String The centroid V value. The centroids are the Transmit Laser Centroids and TAMS Centroids. coordinates String delta_time coi_offset /lrs/laser_centroid/delta_time units String counts long_name String Center of integration offset source String LRS contentType String referenceInformation description String The signed 16-bit center of integration offset for this specific centroid. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters relating to the Application Laser Centroid (LCENT) Data. The (Application Mode) Laser Centroid Data Packet contains reported Laser-Side Centroids, which are part of the core LRS data output. This packet normally will contain 10 valid centroids, reported and stored at a nominally 50 Hz rate and is available through all data channels (SSR, real time telemetry, and onboard to the spacecraft ACS). data_rate String Data within this group are stored at the data rate of the source LRS Application Laser Centroid Data (nominally fifty per second). stellar_centroid delta_time 315 delta_time /lrs/stellar_centroid/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Retrieved times from the CCSDS header timestamps, in seconds relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. coi_offset /lrs/stellar_centroid/delta_time long_name String Center of integration offset units String counts source String LRS contentType String referenceInformation description String The signed 16-bit center of integration offset for this specific centroid. coordinates String delta_time cent_mag /lrs/stellar_centroid/delta_time long_name String LRS_LCENT centroid magitude units String counts source String LRS_LCENT contentType String referenceInformation description String The 12-bit centroid magnitude. From Word 2, bits 15 (MSB) to 4 coordinates String delta_time centofintbase /lrs/stellar_centroid/delta_time long_name String Center of integration base units String counts source String LRS contentType String referenceInformation description String Base age of centroids relative to secondary header timestamp. This 32-bit value indicates how many 843.75 kHz time ticks of offset should be applied between the secondary header timestamp and the center_of_integration for the laser centroids reported. This time offset assumes that the secondary header timestamp represents an exact milli-second (that is, is accurate beyond the precision expressed in the timestamp). The offset is based on the LRS internal 27 MHz oscillator (divided by 32), and it can express offset from zero to more than 84 minutes with about 1.185 micro second resolution. Under normal operating conditions, the offset should never exceed 20 milli seconds (about 16875 counts). Centroid timetags offset with this value alone should be adequate for coarse geo-location, but not precision geo-location knowledge as expected for science (individual centroid offsets are required for that purpose). coordinates String delta_time cent_h /lrs/stellar_centroid/delta_time long_name String LRS_LCENT centroid H units String pixels source String LRS_LCENT contentType String referenceInformation description String The centroid H value. coordinates String delta_time quality_f /lrs/stellar_centroid/delta_time long_name String LRS_LCENT Centroid quality units String 1 source String LRS_LCENT valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Flag indicates centroids pass basic validity checks in the LRS software. 0 indicate valid centroids; 1 indicate the corresponding centroid is considered questionable (that is, the corresponding centroid should not be expected to report a valid target with full accuracy). coordinates String delta_time flag_meanings String valid questionable flag_values Int8 0 1 cent_v /lrs/stellar_centroid/delta_time long_name String LRS_LCENT centroid V units String pixels source String LRS_LCENT contentType String referenceInformation description String The centroid V value. coordinates String delta_time trackstat_f /lrs/stellar_centroid/delta_time units String 1 long_name String LRS_LCENT Tracking status source String LRS_LCENT valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Flag indicates tracking status for centroid. 1 indicate valid tracking of that centroid window; 0 indicate the corresponding window is in a searching or acquiring state (that is, the corresponding centroid should not be considered to report a valid target). coordinates String delta_time flag_meanings String acq_state track_state flag_values Int8 0 1 DODS_EXTRA Container Unlimited_Dimension String delta_time Description String The (Application Mode) Stellar Centroid Data Packet contains reported Stellar-Side Centroids, which are part of the core LRS data output. This packet is normally reported and stored at a nominally 10 Hz rate with a variable number of stars reported and is available through all data channels (SSR, real time telemetry, and onboard to the spacecraft ACS). data_rate String Data within this group are stored at the data rate of the source LRS Stellar Centroid Data Packet. (nominally 10 per second.) hk_1120 delta_time 423 delta_time /lrs/hk_1120/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. coordinates String latitude longitude srate_y /lrs/hk_1120/delta_time long_name String LRS_HK Stellar Pattern Rate Y units String pixels/second source String LRS_HK contentType String referenceInformation description String Y component (tip/tilt) of the stellar rate pattern estimate coordinates String delta_time pc_t /lrs/hk_1120/delta_time long_name String LRS_HK Processor Card Thermistor units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Processor Card - 0x0000 = 0.000 V (nominal short;) 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time spwdiscardlink /lrs/hk_1120/delta_time long_name String LRS_HK Spacewire tlm packets dropped due to link not available units String counts source String LRS_HK contentType String referenceInformation description String This 32-bit counter is incremented every time a spacewire telemetry packet is dropped by Failsafe Mode while waiting for a valid spacewire link between the LRS and MEB (an abnormal condition). It starts at 0x00000000, and rolls over to 0x00000000 when it increments from 0xFFFFFFFF. This counter will be reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). coordinates String delta_time sysstat_ac_en /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - Analog Converter Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the LRS FPGA Analog Converter. (0 =DISABLED (abnormal condition); 1 = ENABLED (normal operating condition)) coordinates String delta_time flag_meanings String disabled enabled flag_values Int8 0 1 timecnt /lrs/hk_1120/delta_time long_name String LRS_HK Valid Time Sync Command Counter units String counts source String LRS_HK contentType String referenceInformation description String The Valid Time Sync Command Counter is a 16-bit counter that increments each time that the Failsafe Mode processes a valid command of the corresponding command type. A valid command is defined as a command that passes all verification tests. The counter starts at 0x0000, and rolls over to 0x0000 when it increments from 0xFFFF. The counter is reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). coordinates String delta_time m12v_ldc_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK -12VDC LDC Monitor units String volts source String LRS_HK contentType String referenceInformation description String Voltage of -12VDC LDC Monitor - 0x0000 = 0.000 V; 0xBF9D = -12.000 V (nominal value); 0xFFFF = -16.000 V : A_LRS_HK.ANALOGHK[11] coordinates String delta_time timeerrcnt /lrs/hk_1120/delta_time long_name String LRS_HK Time Sync Command Error Counter units String counts source String LRS_HK contentType String referenceInformation description String The 16-bit Time Sync Command error Counter is incremented every time the Failsafe Mode has one or more command verification or processing errors with the corresponding command type (abnormal conditions). The counter starts at 0x0000, and rolls over to 0x0000 when it increments from 0xFFFF. The counter increments only once per command when there is at least one verification/processing error for that command. TIMEERRCODE will indicate the type of error. The counter is reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). coordinates String delta_time p5v_sdc_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK +5VDC SDC Monitor units String volts source String LRS_HK contentType String referenceInformation description String Voltage of +5VDC SDC Monitor - 0x0000 = 0.000 V; 0xA000 = +5.000 V (nominal value); 0xFFFF = +8.000 V : A_LRS_HK.ANALOGHK[13] coordinates String delta_time cmderrcode /lrs/hk_1120/delta_time long_name String LRS_HK Unique Code for User Command Errors units String counts source String LRS_HK contentType String referenceInformation description String The 16-bit Command Error Unique Code indicates the last type of command error that occurred in Failsafe Mode. This code will be reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). The error codes are defined in Table 19: Command Validation Error Codes in the LRS command and data ICD. coordinates String delta_time chkstat_e_sd_df /lrs/hk_1120/delta_time units String 1 long_name String LRS_HK Checksum Status Register - EEPROM Stellar Detector Dark Frame Checksum source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String EEPROM Stellar Detector (SD) Dark Frame data checksum (0=PASSED (normal operating condition) 1=FAILED (abnormal condition)) coordinates String delta_time flag_meanings String passed failed flag_values Int8 0 1 sysstat_sw /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - Spacewire Module Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the Spacewire Module (0 = NOT RUNNING (abnormal condition); 1 = RUNNING (normal operating condition)) coordinates String delta_time flag_meanings String not_running running flag_values Int8 0 1 spwstat_ll_err /lrs/hk_1120/delta_time long_name String LRS_HK Spacewire Status Register - Last Link Error units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 3 contentType String referenceInformation description String This is the Last Link Error Code portion of the LRS spacewire interface register. coordinates String delta_time flag_meanings String disconnected parity_err esc_rec credit_err flag_values Int8 0 1 2 3 p3_3v_cmon_a /lrs/hk_1120/delta_time long_name String LRS_HK +3.3VDC Current Monitor units String amps source String LRS_HK contentType String referenceInformation description String Amperage of +3.3VDC Current Monitor - 0x0000 = 0.000 A; 0xFFFF = +4.000 A : A_LRS_HK.ANALOGHK[9] coordinates String delta_time spwstat_pec /lrs/hk_1120/delta_time long_name String LRS_HK Spacewire Status Register _ Packet Error Counter units String counts source String LRS_HK contentType String referenceInformation description String This is the 6-bit Packet Error Counter portion of the LRS spacewire interface status register coordinates String delta_time p5v_ana_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK +5VDC Analog Monitor units String volts source String LRS_HK contentType String referenceInformation description String Voltage of +5VDC Analog Monitor - 0x0000 = 0.000 V; 0xA000 = +5.000 V (nominal value); 0xFFFF = +8.000 V : A_LRS_HK.ANALOGHK[16] coordinates String delta_time timeerrcode /lrs/hk_1120/delta_time long_name String LRS_HK Time Sync Command Error Code units String counts source String LRS_HK contentType String referenceInformation description String The 16-bit Time Sync Error Code indicates the last type of time sync error that occurred in Failsafe Mode. This code will be reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). The error codes are defined in Table 19: Command Validation Error Codes. coordinates String delta_time chkstat_s_sd_df /lrs/hk_1120/delta_time units String 1 long_name String LRS_HK Checksum Status Register - SRAM Stellar Detector Dark Frame Checksum source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String SRAM Stellar Detector (SD) Dark Frame data checksum (0=PASSED (normal operating condition) 1=FAILED (abnormal condition)) coordinates String delta_time flag_meanings String passed failed flag_values Int8 0 1 m12v_cmon_a /lrs/hk_1120/delta_time long_name String LRS_HK -12VDC Current Monitor units String amps source String LRS_HK contentType String referenceInformation description String Amperage of -12VDC Current Monitor - 0x0000 = 0.000 A; 0xFFFF = +0.400 A : A_LRS_HK.ANALOGHK[6] coordinates String delta_time p1_5v_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK +1.5VDC Monitor units String volts source String LRS_HK contentType String referenceInformation description String Voltage of +1.5VDC Monitor - 0x0000 = 0.000 V; 0x6000 = +1.500 V (nominal value); 0xFFFF = +4.000 V : A_LRS_HK.ANALOGHK[3] coordinates String delta_time meter_bar1_t /lrs/hk_1120/delta_time long_name String LRS_HK Optics Thermistor #4 (Metering Bars #1 Temperature) units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Optics Thermistor #4 (Metering Bars #1) - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time ppsoffset_ticks /lrs/hk_1120/delta_time long_name String LRS_HK Oscillator Offset Ticks units String counts source String LRS_HK contentType String referenceInformation description String Oscillator Offset (ticks) for TOD (time of day) correction. coordinates String delta_time p12v_ana_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK +12VDC Analog Monitor units String volts source String LRS_HK contentType String referenceInformation description String Voltage of +12VDC Analog Monitor - 0x0000 = 0.000 V; 0xC000 = +12.000 V (nominal value); 0xFFFF = +16.000 V : A_LRS_HK.ANALOGHK[15] coordinates String delta_time ground2_v /lrs/hk_1120/delta_time long_name String LRS_HK Ground 2 Voltage units String volts source String LRS_HK contentType String referenceInformation description String Voltage of Ground 2 - 0x0000 = 0.000 V (nominal value); 0xFFFF = +4.000 V : A_LRS_HK.ANALOGHK[1] coordinates String delta_time therm_open_ref_v /lrs/hk_1120/delta_time long_name String LRS_HK Thermistor Reference (open) units String volts source String LRS_HK contentType String referenceInformation description String Voltage of Thermistor Reference (open) - 0x0000 = 0.000 V; 0xFFFF = +4.000 V (nominal value) : A_LRS_HK.ANALOGHK[21] coordinates String delta_time therm_gnd_ref_v /lrs/hk_1120/delta_time long_name String LRS_HK Thermistor Reference (ground) units String volts source String LRS_HK contentType String referenceInformation description String Voltage of Thermistor Reference (ground) - 0x0000 = 0.000 V (nominal value); 0xFFFF = +4.000 V : A_LRS_HK.ANALOGHK[20] coordinates String delta_time sysstat_sdcd_cable /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - SDC Digital Cable Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the LRS FPGA SDCD (Stellar Detector Card Digital Cable. (0 = DISCONNECTED (abnormal condition); 1 = CONNECTED (normal operating condition)) coordinates String delta_time flag_meanings String disconnected connected flag_values Int8 0 1 stellar_barrel2_t /lrs/hk_1120/delta_time long_name String LRS_HK Optics Thermistor #8 (Stellar Side Barrel #2 Temperature) units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Optics Thermistor #8 (Stellar Side Barrel #2) - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time sysstat_lsync /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - Laser Sync validity Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current validity of the Laser Sync (0 = INVALID (abnormal condition); 1 = VALID (normal operating condition)) coordinates String delta_time flag_meanings String invalid valid flag_values Int8 0 1 sysstat_ldc /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - LDC Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the Laser Detector Card (LDC) working (0 = Finished Execution; 1 = Executing). Note: The FPGA toggles these values based on what logic is executing, so they may show up as 0 or 1 based on when the packet is generated coordinates String delta_time flag_meanings String finished executing flag_values Int8 0 1 chkstat_e_at /lrs/hk_1120/delta_time long_name String LRS_HK Checksum Status Register - EEPROM Application Text Checksum units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String EEPROM Application Text (AT) checksum (0=PASSED (normal operating condition) 1=FAILED (abnormal condition)) coordinates String delta_time flag_meanings String passed failed flag_values Int8 0 1 sysstat_ldcd_cable /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - LDC Digital Cable Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the LRS FPGA LDCD (Laser Detector Card Digital Cable. (0 = DISCONNECTED (abnormal condition); 1 = CONNECTED (normal operating condition)) coordinates String delta_time flag_meanings String disconnected connected flag_values Int8 0 1 chkstat_e_ad /lrs/hk_1120/delta_time long_name String LRS_HK Checksum Status Register - EEPROM Application Text Checksum units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String EEPROM Application Data (AD) checksum (0=PASSED (normal operating condition) 1=FAILED (abnormal condition)) coordinates String delta_time flag_meanings String passed failed flag_values Int8 0 1 ldmemconflict /lrs/hk_1120/delta_time long_name String LRS_HK LD Memory Conflicts units String counts source String LRS_HK contentType String referenceInformation description String This 16-bit counter is incremented each time the Application Mode is still accessing Laser-Side shared memory when a new LRS cycle starts. This conflict is an error, which indicates that shared memory access did not complete in the allocated time and may have caused stale or invalid laser centroids. This counter starts at 0x0000, and rolls over to 0x0000 when it increments from 0xFFFF. This counter will be reset at Application Mode initialization and by an Application Reset Counters Command (LRScmRSTCNT). coordinates String delta_time sysstat_j1 /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - Jumper 1 units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Jumper 1 status (no planned use on ATLAS). 0 = Jumper is DISCONNECTED (normal operating condition coordinates String delta_time flag_meanings String disconnected connected flag_values Int8 0 1 spwdiscardbkup /lrs/hk_1120/delta_time long_name String LRS_HK Spacewire tlm packets dropped due to buffer not being empty units String counts source String LRS_HK contentType String referenceInformation description String This 32-bit counter is incremented every time a spacewire telemetry packet is dropped by Failsafe Mode while waiting for the transmission buffer to empty (an abnormal condition). It starts at 0x00000000, and rolls over to 0x00000000 when it increments from 0xFFFFFFFF. This counter will be reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). coordinates String delta_time m12v_supp_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK -12VDC Supply Monitor units String volts source String LRS_HK contentType String referenceInformation description String Voltage of 112VDC Supply Monitor - 0x0000 = 0.000 V; 0xBF9D = -12.000 V (nominal value); 0xFFFF = -16.000 V : A_LRS_HK.ANALOGHK[14] coordinates String delta_time srate_x /lrs/hk_1120/delta_time long_name String LRS_HK Stellar Pattern Rate X units String pixels/sec source String LRS_HK contentType String referenceInformation description String X component (tip/tilt) of the stellar rate pattern estimate. coordinates String delta_time cmderrcnt /lrs/hk_1120/delta_time long_name String LRS_HK User Command Error Counter units String counts source String LRS_HK contentType String referenceInformation description String The 16-bit User Command Error Counter is incremented every time the Failsafe Mode has one or more command verification or processing errors with the corresponding command type (abnormal conditions). The counter starts at 0x0000, and rolls over to 0x0000 when it increments from 0xFFFF. The counter increments only once per command when there is at least one verification/processing error for that command. CMDERRCODE will indicate the type of error. The counter is reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). coordinates String delta_time chkstat_e_ld_df /lrs/hk_1120/delta_time units String 1 long_name String LRS_HK Checksum Status Register - EEPROM Laser Detector Dark Frame Checksum source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String EEPROM Laser Detector (LD) Dark Frame data checksum (0=PASSED (normal operating condition) 1=FAILED (abnormal condition)) coordinates String delta_time flag_meanings String passed failed flag_values Int8 0 1 dmppktleft /lrs/hk_1120/delta_time long_name String LRS_HK Remaining number of dump packets to go units String counts source String LRS_HK contentType String referenceInformation description String This 16-bit counter indicates the remaining number of dump packets to send during Failsafe Mode processing of a Failsafe Dump Memory Command (LRSfscmDPMEM). It is 0x0000 whenever no dump command is active. coordinates String delta_time m12v_sdc_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK -12VDC SDC Monitor units String volts source String LRS_HK contentType String referenceInformation description String Voltage of -12VDC SDC Monitor - 0x0000 = 0.000 V; 0xBF9D = -12.000 V (nominal value); 0xFFFF = -16.000 V : A_LRS_HK.ANALOGHK[10] coordinates String delta_time ppscount /lrs/hk_1120/delta_time long_name String LRS_HK 1PPS sync counter units String counts source String LRS_HK contentType String referenceInformation description String A 32-bit count of sync pulses registered by the LRS FPGA. The value of the pulse counter starts at 0x00000000, and rolls over to 0x00000000 when it increments from 0xFFFFFFFF. coordinates String delta_time sysstat_j2 /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - Jumper 2 units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String Jumper 2 status (no planned use on ATLAS). 0 = Jumper is DISCONNECTED (normal operating condition) coordinates String delta_time flag_meanings String disconnected connected flag_values Int8 0 1 cmdcnt /lrs/hk_1120/delta_time units String counts source String LRS_HK long_name String LRS_HK Valid User Command Counter contentType String referenceInformation description String The Valid User Command Counter is a 16-bit counter that increments each time that the Failsafe Mode processes a valid command of the corresponding command type. A valid command is defined as a command that passes all verification tests. The counter starts at 0x0000, and rolls over to 0x0000 when it increments from 0xFFFF. The counter is reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). coordinates String delta_time ppsoscval /lrs/hk_1120/delta_time long_name String LRS_HK Latched oscillator value at 1PPS sync units String counts source String LRS_HK contentType String referenceInformation description String The 32-bit count of internal 27 MHz oscillator ticks at the time when the last 1 PPS sync pulse was registered by the LRS FPGA. coordinates String delta_time laser_barrel1_t /lrs/hk_1120/delta_time long_name String LRS_HK Optics Thermistor #1 (Laser Side Barrel #1 Temperature) units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Optics Thermistor #1 (Laser Side Barrel #1) - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time spwoutofsync /lrs/hk_1120/delta_time long_name String LRS_HK Spacewire words skipped to find sync units String counts source String LRS_HK contentType String referenceInformation description String This 32-bit counter is incremented each time a spacewire command word is skipped by Failsafe Mode to reach a valid packet sync (an abnormal condition). It starts at 0x00000000, and rolls over to 0x00000000 when it increments from 0xFFFFFFFF. This counter will be reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). coordinates String delta_time ground1_v /lrs/hk_1120/delta_time long_name String LRS_HK Ground 1 Voltage units String volts source String LRS_HK contentType String referenceInformation description String Voltage of Ground 1 - 0x0000 = 0.000 V (nominal value); 0xFFFF = +4.000 V : A_LRS_HK.ANALOGHK[0] coordinates String delta_time ldoverrun /lrs/hk_1120/delta_time long_name String LRS_HK LD Processing Overruns units String counts source String LRS_HK contentType String referenceInformation description String This 16-bit counter is incremented each time the Application Mode is still processing Laser-Side data when a new LRS cycle starts. This overrun condition is a warning, which indicates that some processor activity did not complete in the allocated time and may delay reporting of the next laser data packets. This counter starts at 0x0000, and rolls over to 0x0000 when it increments from 0xFFFF. This counter will be reset at Application Mode initialization and by an Application Reset Counters Command (LRScmRSTCNT). coordinates String delta_time ldbackground /lrs/hk_1120/delta_time long_name String LRS_HK LD background units String counts source String LRS_HK contentType String referenceInformation description String The 16-bit values are measures of the measured detector background for the laser side after subtracting the predicted dark frame. Each is a scaled average of the background levels from all tracking windows on that detector, for all measurements in the preceding one (1) second. Because the search and imaging windows move around, these values should be expected to fluctuate significantly; however, they are an indication of how well the predicted dark frame matches the background (stray light) levels. If they are occasionally very large, there is probably a stray light problem. If they are consistently very large, there is probably error in the dark frame calibration. coordinates String delta_time ldmemcnt /lrs/hk_1120/delta_time long_name String LRS_HK Number of memory words loaded units String counts source String LRS_HK contentType String referenceInformation description String This 32-bit counter records the total number of memory words loaded during Failsafe Mode processing of Failsafe Load Memory Command (LRSfscmLDMEM). It starts at 0x00000000, and rolls over to 0x00000000 when it increments from 0xFFFFFFFF. This counter will be reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT) coordinates String delta_time chkstat_s_at /lrs/hk_1120/delta_time units String 1 long_name String LRS_HK Checksum Status Register -SRAM Application Text Checksum source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String SRAM Application Text (AT) checksum (0=PASSED (normal operating condition) 1=FAILED (abnormal condition)) coordinates String delta_time flag_meanings String passed failed flag_values Int8 0 1 sdoverrun /lrs/hk_1120/delta_time long_name String LRS_HK SD Processing Overruns units String counts source String LRS_HK contentType String referenceInformation description String This 16-bit counter is incremented each time the Application Mode is still processing Stellar-Side data when a new LRS cycle starts that should include new Stellar-Side data collection. This overrun condition is a warning, which indicates that some processor activity did not complete in the allocated time and may delay reporting of the next stellar data packets. This counter starts at 0x0000, and rolls over to 0x0000 when it increments from 0xFFFF. This counter will be reset at Application Mode initialization and by an Application Reset Counters Command (LRScmRSTCNT). coordinates String delta_time laser_barrel3_t /lrs/hk_1120/delta_time long_name String LRS_HK Optics Thermistor #3 (Laser Side Barrel #3 Temperature) units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Optics Thermistor #3 (Laser Side Barrel #3) - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time sdmemconflict /lrs/hk_1120/delta_time long_name String LRS_HK SD Memory Conflicts units String counts source String LRS_HK contentType String referenceInformation description String This 16-bit counter is incremented each time the Application Mode is still accessing Stellar-Side shared memory when a new LRS cycle starts that includes new Stellar-Side data collection. This conflict is an error, which indicates that shared memory access did not complete in the allocated time and may have caused stale or invalid stellar centroids. This counter starts at 0x0000, and rolls over to 0x0000 when it increments from 0xFFFF. This counter will be reset at Application Mode initialization and by an Application Reset Counters Command (LRScmRSTCNT). coordinates String delta_time p5v_ldc_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK +5VDC LDC Monitor units String volts source String LRS_HK contentType String referenceInformation description String Voltage of +5VDC LDC Monitor - 0x0000 = 0.000 V; 0xA000 = +5.000 V (nominal value); 0xFFFF = +8.000 V : A_LRS_HK.ANALOGHK[12] coordinates String delta_time dmpmemcnt /lrs/hk_1120/delta_time long_name String LRS_HK Number of memory words dumped units String counts source String LRS_HK contentType String referenceInformation description String This 32-bit counter records the total number of memory words dumped during Failsafe Mode processing of Failsafe Dump Memory Command (LRSfscmDPMEM). It starts at 0x00000000, and rolls over to 0x00000000 when it increments from 0xFFFFFFFF. This counter will be reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). coordinates String delta_time ldc_t /lrs/hk_1120/delta_time long_name String LRS_HK Laser Detector Card Temperature units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Laser Detector Card - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time reference_v /lrs/hk_1120/delta_time long_name String LRS_HK Reference Voltage units String volts source String LRS_HK contentType String referenceInformation description String Reference Voltage - 0x0000 = 0.000 V; 0x8000 = +2.000 V (nominal value); 0xFFFF = +4.000 V : A_LRS_HK.ANALOGHK[2] coordinates String delta_time meter_bar2_t /lrs/hk_1120/delta_time long_name String LRS_HK Optics Thermistor #5 (Metering Bars #2 Temperature) units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Optics Thermistor #5 (Metering Bars #2) - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time meter_bar3_t /lrs/hk_1120/delta_time long_name String LRS_HK Optics Thermistor #6 (Metering Bars #3 Temperature) units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Optics Thermistor #6 (Metering Bars #3) - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time sdbackground /lrs/hk_1120/delta_time long_name String LRS_HK SD background units String counts source String LRS_HK contentType String referenceInformation description String The 16-bit values are measures of the measured detector background of the stellar side after subtracting the predicted dark frame. Each is a scaled average of the background levels from all tracking windows on that detector, for all measurements in the preceding one (1) second. Because the search and imaging windows move around, these values should be expected to fluctuate significantly; however, they are an indication of how well the predicted dark frame matches the background (stray light) levels. If they are occasionally very large, there is probably a stray light problem. If they are consistently very large, there is probably error in the dark frame calibration. coordinates String delta_time sdc_t /lrs/hk_1120/delta_time long_name String LRS_HK Stellar Detector Card Temperature units String counts source String LRS_HK contentType String referenceInformation description String Temperature of Stellar Detector Card - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time p3_3v_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK +3.3VDC Monitor units String volts source String LRS_HK contentType String referenceInformation description String Voltage of +3.3VDC Monitor - 0x0000 = 0.000 V; 0xD333 = +3.300 V (nominal value); 0xFFFF = +4.000 V : A_LRS_HK.ANALOGHK[18] coordinates String delta_time chkstat_s_ld_df /lrs/hk_1120/delta_time units String 1 long_name String LRS_HK Checksum Status Register - SRAM Laser Detector Dark Frame Checksum source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String SRAM Laser Detector (LD) Dark Frame data checksum (0=PASSED (normal operating condition) 1=FAILED (abnormal condition)) coordinates String delta_time flag_meanings String passed failed flag_values Int8 0 1 p12v_cmon_a /lrs/hk_1120/delta_time long_name String LRS_HK +12VDC Current Monitor units String amps source String LRS_HK contentType String referenceInformation description String Amperage of +12VDC Current Monitor - 0x0000 = 0.000 A; 0xFFFF = +0.400 A : A_LRS_HK.ANALOGHK[7] coordinates String delta_time p5v_supp_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK +5VDC Supply Monitor units String volts source String LRS_HK contentType String referenceInformation description String Voltage of +5VDC Supply Monitor - 0x0000 = 0.000 V; 0xA000 = +5.000 V (nominal value); 0xFFFF = +8.000 V : A_LRS_HK.ANALOGHK[16] coordinates String delta_time stellar_shroud_t /lrs/hk_1120/delta_time units String degreesC long_name String LRS_HK Optics Thermistor #10 (Stellar Side Shroud Temperature) source String LRS_HK contentType String referenceInformation description String Temperature of Optics Thermistor #10 (Stellar Side Shroud) - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time chkstat_e_bc /lrs/hk_1120/delta_time long_name String LRS_HK Checksum Status Register - EEPROM Boot Config Checksum units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String EEPROM Boot Configuration (BC) checksum (0=PASSED (normal operating condition) 1=FAILED (abnormal condition)) coordinates String delta_time flag_meanings String passed failed flag_values Int8 0 1 sysstat_ldc_en /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - LDC Power and Signals Enable Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the LRS FPGA LDC (Laser Detector Card) Power and Signals. (0 = DISABLED (abnormal condition); 1 = ENABLED (normal operating condition)) coordinates String delta_time flag_meanings String disabled enabled flag_values Int8 0 1 ppsoffset_ms /lrs/hk_1120/delta_time units String ms source String LRS_HK long_name String LRS_HK Oscillator Offset contentType String referenceInformation description String Oscillator Offset (milliseconds) for TOD (time of day) correction. coordinates String delta_time sysstat_hk /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register HK Working units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the Housekeeping working (0 = Finished Execution; 1 = Executing ). Note: The FPGA toggles these values based on what logic is executing, so they may show up as 0 or 1 based on when the packet is generated coordinates String delta_time flag_meanings String finished executing flag_values Int8 0 1 stellar_barrel3_t /lrs/hk_1120/delta_time long_name String LRS_HK Optics Thermistor #9 (Stellar Side Barrel #3 Temperature) units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Optics Thermistor #9 (Stellar Side Barrel #3) - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time stellar_barrel1_t /lrs/hk_1120/delta_time long_name String LRS_HK Optics Thermistor #7 (Stellar Side Barrel #1 Temperature) units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Optics Thermistor #7 (Stellar Side Barrel #1) - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time srate_z /lrs/hk_1120/delta_time long_name String LRS_HK Stellar Pattern Rate Z units String radians/second source String LRS_HK contentType String referenceInformation description String Z (rotation) component of the stellar rate pattern estimate coordinates String delta_time sysstat_sdc_en /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - SDC Power and Signals Enable Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the LRS FPGA SDC (Stellar Detector Card) Power and Signals. (0 = DISABLED (abnormal condition); 1 = ENABLED (normal operating condition)) coordinates String delta_time flag_meanings String disabled enabled flag_values Int8 0 1 p1_8v_mon_v /lrs/hk_1120/delta_time long_name String LRS_HK +1.8VDC Monitor Voltage units String volts source String LRS_HK contentType String referenceInformation description String Volage of +1.8VDC Monitor - 0x0000 = 0.000 V; 0x7332 = 1.800 V (nominal); 0xFFFF = +4.000 V : A_LRS_HK.ANALOGHK[19] coordinates String delta_time sysstat_sdc /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - SDC Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the Stellar Detector Card (SDC) working (0 = Finished Execution; 1 = Executing). Note: The FPGA toggles these values based on what logic is executing, so they may show up as 0 or 1 based on when the packet is generated coordinates String delta_time flag_meanings String finished executing flag_values Int8 0 1 pcc_t /lrs/hk_1120/delta_time long_name String LRS_HK Power Converter Card Temperature units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Power Converter Card - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time laser_barrel2_t /lrs/hk_1120/delta_time long_name String LRS_HK Optics Thermistor #2 (Laser Side Barrel #2 Temperature) units String degreesC source String LRS_HK contentType String referenceInformation description String Temperature of Optics Thermistor #2 (Laser Side Barrel #2) - 0x0000 = 0.000 V (nominal short); 0xFFFF = +4.000 V (nominal open) [see thermistor scaling section later for temperature scaling] coordinates String delta_time spwdiscardcmd /lrs/hk_1120/delta_time long_name String LRS_HK Spacewire words dropped due to timeout waiting for full CCSDS packet units String counts source String LRS_HK contentType String referenceInformation description String This 32-bit counter is incremented each time a spacewire command word is dropped by Failsafe Mode due to a timeout while waiting for a full CCSDS packet (an abnormal condition). It starts at 0x00000000, and rolls over to 0x00000000 when it increments from 0xFFFFFFFF. This counter will be reset at power on and by a Failsafe Reset Counters Command (LRSfscmRSTCNT). coordinates String delta_time sysstat_sdca_cable /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - SDC Analog Cable Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the LRS FPGA SDCD (Stellar Detector Card Digital Cable. (0 = DISCONNECTED (abnormal condition); 1 = CONNECTED (normal operating condition)) coordinates String delta_time flag_meanings String disconnected connected flag_values Int8 0 1 p5v_cmon_a /lrs/hk_1120/delta_time long_name String LRS_HK +5VDC Current Monitor units String amps source String LRS_HK contentType String referenceInformation description String Amperage of +5VDC Current Monitor - 0x0000 = 0.000 A; 0xFFFF = +0.400 A : A_LRS_HK.ANALOGHK[8] coordinates String delta_time spwstat_lp_err /lrs/hk_1120/delta_time long_name String LRS_HK Spacewire Status Register - Last Packet Error units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 3 contentType String referenceInformation description String This is the Last Packet Error Code portion of the LRS spacewire interface register. coordinates String delta_time flag_meanings String no_error eep_rec incomplete_sw invalid flag_values Int8 0 1 2 3 sysstat_ldca_cable /lrs/hk_1120/delta_time long_name String LRS_HK System Status Register - LDC Analog Cable Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String The current status of the LRS FPGA LDCA (Laser Detector Card Analog) Cable. (0 = DISCONNECTED (abnormal condition); 1 = CONNECTED (normal operating condition)) coordinates String delta_time flag_meanings String disconnected connected flag_values Int8 0 1 spwstat_st_f /lrs/hk_1120/delta_time long_name String LRS_HK Spacewire Status Register - Status units String 1 source String LRS_HK valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String This is the status flag portion of the LRS spacewire interface status register. coordinates String delta_time flag_meanings String not_running running flag_values Int8 0 1 DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters relating to the Application Housekeeping Packet (LRStmHK)(APID 1120). The (Application Mode) Housekeeping Packet provides all LRS health and safety data. It is normally reported and stored at a 1 Hz rate. data_rate String Data within this group are stored at the data rate of the source LRS Housekeeping Data (nominally once per second). orbit_info delta_time 1 delta_time /orbit_info/delta_time long_name String Granule Start Time standard_name String time units String seconds since 2018-01-01 source String Operations contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch at the start of the granule. At the time of ATL02 creation, the equator crossing time is not precisely known.. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. cycle_number /orbit_info/delta_time long_name String Cycle Number units String 1 valid_min Int8 0 valid_max Int8 50 contentType String referenceInformation description String A count of the number of exact repeats of this reference orbit. coordinates String delta_time source String Operations orbit_number /orbit_info/delta_time long_name String Orbit Number units String 1 valid_min UInt16 1 valid_max UInt16 65000 contentType String referenceInformation description String Unique identifying number for each planned ICESat-2 orbit. coordinates String delta_time source String Operations rgt /orbit_info/delta_time long_name String Reference Ground track units String 1 source String Operations valid_min Int16 1 valid_max Int16 1387 contentType String referenceInformation description String The reference ground track (RGT) is the track on the earth at which a specified unit vector within the observatory is pointed. Under nominal operating conditions, there will be no data collected along the RGT, as the RGT is spanned by GT3 and GT4. During slews or off-pointing, it is possible that ground tracks may intersect the RGT. The ICESat-2 mission has 1387 RGTs. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains orbit information. data_rate String Data within this group are stored at the data rate of the source PCE Altimetric Data Packets. (nominally fifty per second.) quality_assessment ds_statistics 5 ds_statistics /quality_assessment/ds_statistics long_name String Dimension scale for QA statistics units String 1 source String Derived (QA) contentType String qualityInformation description String QA statistics array index flag_meanings String number_of_points minimum maximum average standard_deviation flag_values Int8 1 2 3 4 5 qa_granule_fail_reason 1 long_name String Granule Failure Reason units String 1 valid_min Int32 0 valid_max Int32 5 contentType String qualityInformation description String Flag indicating granule failure reason. 0=no failure; 1=processing error; 2=Insufficient output data was generated; 3=An uncorrected TxRx slip condition was detected; 4=TBD_Failure; 5=other failure. flag_meanings String no_failure NO_SIM_HK NO_PMF_TIME TIME_OF_DAY_FAILURE TIME_OF_FLIGHT_FAILURE OTHER_FAILURE flag_values Int32 0 1 2 3 4 5 source String Operations qa_granule_pass_fail 1 long_name String Granule Pass Flag units String 1 valid_min Int32 0 valid_max Int32 1 contentType String qualityInformation description String Flag indicating granule quality. 0=granule passes automatic QA. 1=granule fails automatic QA. flag_meanings String PASS FAIL flag_values Int32 0 1 source String Operations Description String Contains quality assessment data. This may include QA counters, QA along-track data and/or QA summary data. DODS_EXTRA Container Unlimited_Dimension String ds_statistics along_track delta_time_start 43 delta_time_start /quality_assessment/along_track/delta_time_start long_name String Elapsed UTC seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of seconds since the ATLAS SDP epoch at the start of the QA interval. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. delta_time_end /quality_assessment/along_track/delta_time_start long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of seconds since the ATLAS SDP epoch at the end of the QA interval. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. DODS_EXTRA Container Unlimited_Dimension String delta_time_start Description String Along-track statistics pce1 qa_at_n_dupe /quality_assessment/along_track/delta_time_start long_name String Number of duplicates units String counts source String Derived (QA) contentType String qualityInformation description String The number of duplicate Rx events detected in the along-track interval. coordinates String ../delta_time_start qa_at_n_rx_w /quality_assessment/along_track/delta_time_start units String counts long_name String Number of Weak Rx Events source String Derived (QA) contentType String qualityInformation description String The number of Weak Rx events in the along-track interval. coordinates String ../delta_time_start qa_at_n_rx_s /quality_assessment/along_track/delta_time_start units String counts long_name String Number of Strong Rx Events source String Derived (QA) contentType String qualityInformation description String The number of Strong Rx events in the along-track interval. coordinates String ../delta_time_start qa_at_n_tep /quality_assessment/along_track/delta_time_start long_name String Number of TEPs units String counts source String Derived (QA) contentType String qualityInformation description String The number of TEP events detected in the along-track interval. coordinates String ../delta_time_start qa_at_n_tx /quality_assessment/along_track/delta_time_start long_name String Number of Tx Pulses units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx Pulses in the along-track interval. coordinates String ../delta_time_start qa_at_tx_ll_stat /quality_assessment/along_track/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx LL Stat units String counts source String Derived (QA) contentType String qualityInformation description String Along-track statistic of Transmit Leading Lower time of flight. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_at_tx_other_stat /quality_assessment/along_track/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx Other Stat units String counts source String Derived (QA) contentType String qualityInformation description String Along-track statistic of the Other Transmit time of flight measurement. For PCE1, this is Transmit Leading Upper edge (LU) time; for PCE2 this is Transmit Trailing Upper edge (TU) time; and for PCE3 this is Transmit Trailing Lower edge (TL) time. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start Description String Along-track statistics pce2 qa_at_n_dupe /quality_assessment/along_track/delta_time_start long_name String Number of duplicates units String counts source String Derived (QA) contentType String qualityInformation description String The number of duplicate Rx events detected in the along-track interval. coordinates String ../delta_time_start qa_at_n_rx_w /quality_assessment/along_track/delta_time_start units String counts long_name String Number of Weak Rx Events source String Derived (QA) contentType String qualityInformation description String The number of Weak Rx events in the along-track interval. coordinates String ../delta_time_start qa_at_n_rx_s /quality_assessment/along_track/delta_time_start units String counts long_name String Number of Strong Rx Events source String Derived (QA) contentType String qualityInformation description String The number of Strong Rx events in the along-track interval. coordinates String ../delta_time_start qa_at_n_tep /quality_assessment/along_track/delta_time_start long_name String Number of TEPs units String counts source String Derived (QA) contentType String qualityInformation description String The number of TEP events detected in the along-track interval. coordinates String ../delta_time_start qa_at_n_tx /quality_assessment/along_track/delta_time_start long_name String Number of Tx Pulses units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx Pulses in the along-track interval. coordinates String ../delta_time_start qa_at_tx_ll_stat /quality_assessment/along_track/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx LL Stat units String counts source String Derived (QA) contentType String qualityInformation description String Along-track statistic of Transmit Leading Lower time of flight. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_at_tx_other_stat /quality_assessment/along_track/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx Other Stat units String counts source String Derived (QA) contentType String qualityInformation description String Along-track statistic of the Other Transmit time of flight measurement. For PCE1, this is Transmit Leading Upper edge (LU) time; for PCE2 this is Transmit Trailing Upper edge (TU) time; and for PCE3 this is Transmit Trailing Lower edge (TL) time. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start Description String Along-track statistics pce3 qa_at_n_dupe /quality_assessment/along_track/delta_time_start long_name String Number of duplicates units String counts source String Derived (QA) contentType String qualityInformation description String The number of duplicate Rx events detected in the along-track interval. coordinates String ../delta_time_start qa_at_n_rx_w /quality_assessment/along_track/delta_time_start units String counts long_name String Number of Weak Rx Events source String Derived (QA) contentType String qualityInformation description String The number of Weak Rx events in the along-track interval. coordinates String ../delta_time_start qa_at_n_rx_s /quality_assessment/along_track/delta_time_start units String counts long_name String Number of Strong Rx Events source String Derived (QA) contentType String qualityInformation description String The number of Strong Rx events in the along-track interval. coordinates String ../delta_time_start qa_at_n_tx /quality_assessment/along_track/delta_time_start long_name String Number of Tx Pulses units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx Pulses in the along-track interval. coordinates String ../delta_time_start qa_at_tx_ll_stat /quality_assessment/along_track/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx LL Stat units String counts source String Derived (QA) contentType String qualityInformation description String Along-track statistic of Transmit Leading Lower time of flight. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_at_tx_other_stat /quality_assessment/along_track/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx Other Stat units String counts source String Derived (QA) contentType String qualityInformation description String Along-track statistic of the Other Transmit time of flight measurement. For PCE1, this is Transmit Leading Upper edge (LU) time; for PCE2 this is Transmit Trailing Upper edge (TU) time; and for PCE3 this is Transmit Trailing Lower edge (TL) time. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start Description String Along-track statistics event_counts Description String Event count statistics pce1 edac_starttag_fifo_dbe 1 long_name String EDACStartTagFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTagFIFO_DBE bit tdc_fifo_empty 1 long_name String TDC_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_FIFOEmpty bit burst_fifo_empty 1 long_name String Burst_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Burst_FIFOEmpty bit tdc_fifo_went_full 1 long_name String TDC_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_FIFOWentFull bit alt_t0_cnt 1 long_name String alt_t0_cnt instances units String 1 source String dfc_hk contentType String qualityInformation description String Number of instances where the alt_t0_cnt increment is not 200. sdram_mismatch_err 1 long_name String SDRAMMismatch_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SDRAMMismatch_Err bit mframe_gap 1 long_name String major frame gap instances units String 1 source String dfc_hk contentType String qualityInformation description String Number of instances where there is a gap in the major_frame counter values. did_not_finish_writing_data_err 1 long_name String DidNotFinishWritingData_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the DidNotFinishWritingData_Err bit tdc_fifo_half_full 1 long_name String TDC_FIFOHalfFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_FIFOHalfFull bit did_not_finish_transfer_err 1 long_name String DidNotFinishTransfer_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the DidNotFinishTransfer_Err bit alt_sci_seg_limit 1 long_name String alt_sci_seg_limit changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_sci_seg_limit tdc_weak_path_err 1 long_name String TDC_WeakPath_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_WeakPath_Err bit edac_card_readout_ram_sbe 1 long_name String EDACCardReadoutRAM_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardReadoutRAM_SBE bit edac_mf_number_sbe 1 long_name String EDACMFNumber_SBE changes units String 1 contentType String qualityInformation description String Number of changes in the EDACMFNumber_SBE bit source String dfc_hk packetizer_a_fifo_went_full 1 long_name String PacketizerA_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerA_FIFOWentFull bit spw_rx_invalid_opcode_err 1 long_name String SpwRxInvalidOpcode_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpwRxInvalidOpcode_Err bit edac_packet_fifo_b_dbe 1 long_name String EDACPacketFIFO_B_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_B_DBE bit alt_gp_reg 1 long_name String alt_gp_reg changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_gp_reg edac_card_creation_ram_sbe 1 long_name String EDACCardCreationRAM_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardCreationRAM_SBE bit nested_exit 1 long_name String Number of nested_exits units String 1 source String dfc_hk contentType String qualityInformation description String Number of instances where a nested_exit condition is possible. mode 1 long_name String mode changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the mode cmd_err_cntr 1 long_name String cmd_err_cntr changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the cmd_err_cntr starttag_fifo_went_full 1 long_name String StartTag_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the StartTag_FIFOWentFull bit packetizer_a_fifo_empty 1 long_name String PacketizerA_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerA_FIFOEmpty bit edac_burst_fifo_sbe 1 long_name String EDACBurstFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACBurstFIFO_SBE bit edac_singlebit_error_cnt 1 long_name String EDACSingleBitErrorCnt changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSingleBitErrorCnt byte spw_rx_invalid_length_err 1 long_name String SpwRxInvalidLength_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpwRxInvalidLength_Err bit edac_sdram_a_dbe 1 long_name String EDACSDRAM_A_DBEchanges units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_A_DBE bit spw_not_ready_cnt 1 long_name String spw_not_ready_cnt changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in spw_not_ready_cnt alt_write_watchdog 1 long_name String alt_write_watchdog changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_write_watchdog tracking_fifo_empty 1 long_name String Tracking_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Tracking_FIFOEmpty bit start_data_collection 1 long_name String StartDataCollection changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the StartDataCollection bit edac_packet_fifo_b_sbe 1 long_name String EDACPacketFIFO_B_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_B_SBE bit alt_dupe_margin 1 long_name String alt_dupe_margin changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_dupe_margin edac_start_tag_fifo_sbe 1 long_name String EDACStartTagFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTagFIFO_SBE bit edac_start_tracking_fifo_sbe 1 long_name String EDACStartTrackingFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTrackingFIFO_SBE bit autorestartdfccount 1 long_name String autorestartdfccount changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the autorestartdfccount edac_packet_fifo_a_dbe 1 long_name String EDACPacketFIFO_A_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_A_DBE bit alt_mframe_freq 1 long_name String alt_mframe_freq changes units String 1 contentType String qualityInformation description String Number of changes in the alt_mframe_freq source String dfc_hk edac_card_flag_ram_sbe 1 long_name String EDACCardFlagRAM_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardFlagRAM_SBE bit edac_sdram_b_sbe 1 long_name String EDACSDRAM_B_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_B_SBE bit alt_config 1 long_name String alt_config changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_config edac_start_tag_fifo_dbe 1 long_name String EDACStartTagFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTagFIFO_DBE bit spw_rx_eep_err 1 long_name String SpwRxEEP_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpwRxEEP_Err bit spw_disconnect_err_cnt 1 long_name String SpWDisconnectErrorCount changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpWDisconnectErrorCount bit edac_eventtag_fifo_dbe 1 long_name String EDACEventTagFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACEventTagFIFO_DBE bit edac_eventtag_fifo_sbe 1 long_name String EDACEventTagFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACEventTagFIFO_SBE bit tdc_strong_path_err 1 long_name String TDC_StrongPath_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_StrongPath_Err bit activeknobstable 1 long_name String activeknobstable changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the activeknobstable packetizer_b_fifo_empty 1 long_name String PacketizerB_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerB_FIFOEmpty bit tracking_fifo_went_full 1 long_name String Tracking_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Tracking_FIFOWentFull bit alt_sci_addr 1 long_name String alt_sci_addr changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_sci_addr tx_pulses_in_majorframe 1 long_name String TxPulsesInMajorFrame changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TxPulsesInMajorFrame bit edac_card_creation_ram_dbe 1 long_name String EDACCardCreationRAM_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardCreationRAM_DBE bit cmd_suc_cntr 1 long_name String cmd_suc_cntr changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the cmd_suc_cntr edac_packet_fifo_a_sbe 1 long_name String EDACPacketFIFO_A_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_A_SBE bit alt_wait_watchdog 1 long_name String alt_wait_watchdog changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_wait_watchdog packetizer_b_fifo_went_full 1 long_name String PacketizerB_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerB_FIFOWentFull bit burst_fifo_went_full 1 long_name String Burst_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Burst_FIFOWentFull bit spw_debug_mux_out 1 long_name String SpWDebugMuxOut changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpWDebugMuxOut bit range_window_dropout_err 1 long_name String RangeWindowDropout_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the RangeWindowDropout_Err bit edac_sdram_b_dbe 1 long_name String EDACSDRAM_B_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_B_DBE bit card_data_not_finished_err 1 long_name String CardDataNotFinished_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the CardDataNotFinished_Err bit alt_debug_reg 1 long_name String alt_debug_reg changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_debug_reg alt_cmd_cnt 1 long_name String alt_cmd_cnt increments units String 1 source String dfc_hk contentType String qualityInformation description String Number of increments in the alt_cmd_cnt alt_cal_interval 1 long_name String alt_cal_interval changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_cal_interval edac_sdram_a_sbe 1 long_name String EDACSDRAM_A_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_A_SBE bit current_read_sdram_buffer 1 long_name String CurrentReadSDRAMBuffer changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the CurrentReadSDRAMBuffer bit eventtag_fifo_went_full 1 long_name String EventTag_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EventTag_FIFOWentFull bit edac_start_tracking_fifo_dbe 1 long_name String EDACStartTrackingFIFO_DBE changes units String 1 contentType String qualityInformation description String Number of changes in the EDACStartTrackingFIFO_DBE bit source String dfc_hk spw_parity_err_cnt 1 long_name String SpWParityErrorCount changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpWParityErrorCount bit eventtag_fifo_empty 1 long_name String EventTag_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EventTag_FIFOEmpty bit edac_card_readout_ram_dbe 1 long_name String EDACCardReadoutRAM_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardReadoutRAM_DBE bit edac_mf_number_dbe 1 long_name String EDACMFNumber_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACMFNumber_DBE bit alt_last_opcode 1 long_name String alt_last_opcode changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_last_opcode edac_burst_fifo_dbe 1 long_name String EDACBurstFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACBurstFIFO_DBE bit starttag_fifo_empty 1 long_name String StartTag_FIFOEmpty changes units String 1 contentType String qualityInformation description String Number of changes in the StartTag_FIFOEmpty bit source String dfc_hk Description String Per-PCE event count statistics pce2 edac_starttag_fifo_dbe 1 long_name String EDACStartTagFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTagFIFO_DBE bit tdc_fifo_empty 1 long_name String TDC_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_FIFOEmpty bit burst_fifo_empty 1 long_name String Burst_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Burst_FIFOEmpty bit tdc_fifo_went_full 1 long_name String TDC_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_FIFOWentFull bit alt_t0_cnt 1 long_name String alt_t0_cnt instances units String 1 source String dfc_hk contentType String qualityInformation description String Number of instances where the alt_t0_cnt increment is not 200. sdram_mismatch_err 1 long_name String SDRAMMismatch_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SDRAMMismatch_Err bit mframe_gap 1 long_name String major frame gap instances units String 1 source String dfc_hk contentType String qualityInformation description String Number of instances where there is a gap in the major_frame counter values. did_not_finish_writing_data_err 1 long_name String DidNotFinishWritingData_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the DidNotFinishWritingData_Err bit tdc_fifo_half_full 1 long_name String TDC_FIFOHalfFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_FIFOHalfFull bit did_not_finish_transfer_err 1 long_name String DidNotFinishTransfer_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the DidNotFinishTransfer_Err bit alt_sci_seg_limit 1 long_name String alt_sci_seg_limit changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_sci_seg_limit tdc_weak_path_err 1 long_name String TDC_WeakPath_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_WeakPath_Err bit edac_card_readout_ram_sbe 1 long_name String EDACCardReadoutRAM_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardReadoutRAM_SBE bit edac_mf_number_sbe 1 long_name String EDACMFNumber_SBE changes units String 1 contentType String qualityInformation description String Number of changes in the EDACMFNumber_SBE bit source String dfc_hk packetizer_a_fifo_went_full 1 long_name String PacketizerA_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerA_FIFOWentFull bit spw_rx_invalid_opcode_err 1 long_name String SpwRxInvalidOpcode_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpwRxInvalidOpcode_Err bit edac_packet_fifo_b_dbe 1 long_name String EDACPacketFIFO_B_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_B_DBE bit alt_gp_reg 1 long_name String alt_gp_reg changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_gp_reg edac_card_creation_ram_sbe 1 long_name String EDACCardCreationRAM_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardCreationRAM_SBE bit nested_exit 1 long_name String Number of nested_exits units String 1 source String dfc_hk contentType String qualityInformation description String Number of instances where a nested_exit condition is possible. mode 1 long_name String mode changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the mode cmd_err_cntr 1 long_name String cmd_err_cntr changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the cmd_err_cntr starttag_fifo_went_full 1 long_name String StartTag_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the StartTag_FIFOWentFull bit packetizer_a_fifo_empty 1 long_name String PacketizerA_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerA_FIFOEmpty bit edac_burst_fifo_sbe 1 long_name String EDACBurstFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACBurstFIFO_SBE bit edac_singlebit_error_cnt 1 long_name String EDACSingleBitErrorCnt changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSingleBitErrorCnt byte spw_rx_invalid_length_err 1 long_name String SpwRxInvalidLength_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpwRxInvalidLength_Err bit edac_sdram_a_dbe 1 long_name String EDACSDRAM_A_DBEchanges units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_A_DBE bit spw_not_ready_cnt 1 long_name String spw_not_ready_cnt changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in spw_not_ready_cnt alt_write_watchdog 1 long_name String alt_write_watchdog changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_write_watchdog tracking_fifo_empty 1 long_name String Tracking_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Tracking_FIFOEmpty bit start_data_collection 1 long_name String StartDataCollection changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the StartDataCollection bit edac_packet_fifo_b_sbe 1 long_name String EDACPacketFIFO_B_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_B_SBE bit alt_dupe_margin 1 long_name String alt_dupe_margin changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_dupe_margin edac_start_tag_fifo_sbe 1 long_name String EDACStartTagFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTagFIFO_SBE bit edac_start_tracking_fifo_sbe 1 long_name String EDACStartTrackingFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTrackingFIFO_SBE bit autorestartdfccount 1 long_name String autorestartdfccount changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the autorestartdfccount edac_packet_fifo_a_dbe 1 long_name String EDACPacketFIFO_A_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_A_DBE bit alt_mframe_freq 1 long_name String alt_mframe_freq changes units String 1 contentType String qualityInformation description String Number of changes in the alt_mframe_freq source String dfc_hk edac_card_flag_ram_sbe 1 long_name String EDACCardFlagRAM_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardFlagRAM_SBE bit edac_sdram_b_sbe 1 long_name String EDACSDRAM_B_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_B_SBE bit alt_config 1 long_name String alt_config changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_config edac_start_tag_fifo_dbe 1 long_name String EDACStartTagFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTagFIFO_DBE bit spw_rx_eep_err 1 long_name String SpwRxEEP_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpwRxEEP_Err bit spw_disconnect_err_cnt 1 long_name String SpWDisconnectErrorCount changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpWDisconnectErrorCount bit edac_eventtag_fifo_dbe 1 long_name String EDACEventTagFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACEventTagFIFO_DBE bit edac_eventtag_fifo_sbe 1 long_name String EDACEventTagFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACEventTagFIFO_SBE bit tdc_strong_path_err 1 long_name String TDC_StrongPath_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_StrongPath_Err bit activeknobstable 1 long_name String activeknobstable changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the activeknobstable packetizer_b_fifo_empty 1 long_name String PacketizerB_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerB_FIFOEmpty bit tracking_fifo_went_full 1 long_name String Tracking_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Tracking_FIFOWentFull bit alt_sci_addr 1 long_name String alt_sci_addr changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_sci_addr tx_pulses_in_majorframe 1 long_name String TxPulsesInMajorFrame changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TxPulsesInMajorFrame bit edac_card_creation_ram_dbe 1 long_name String EDACCardCreationRAM_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardCreationRAM_DBE bit cmd_suc_cntr 1 long_name String cmd_suc_cntr changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the cmd_suc_cntr edac_packet_fifo_a_sbe 1 long_name String EDACPacketFIFO_A_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_A_SBE bit alt_wait_watchdog 1 long_name String alt_wait_watchdog changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_wait_watchdog packetizer_b_fifo_went_full 1 long_name String PacketizerB_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerB_FIFOWentFull bit burst_fifo_went_full 1 long_name String Burst_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Burst_FIFOWentFull bit spw_debug_mux_out 1 long_name String SpWDebugMuxOut changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpWDebugMuxOut bit range_window_dropout_err 1 long_name String RangeWindowDropout_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the RangeWindowDropout_Err bit edac_sdram_b_dbe 1 long_name String EDACSDRAM_B_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_B_DBE bit card_data_not_finished_err 1 long_name String CardDataNotFinished_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the CardDataNotFinished_Err bit alt_debug_reg 1 long_name String alt_debug_reg changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_debug_reg alt_cmd_cnt 1 long_name String alt_cmd_cnt increments units String 1 source String dfc_hk contentType String qualityInformation description String Number of increments in the alt_cmd_cnt alt_cal_interval 1 long_name String alt_cal_interval changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_cal_interval edac_sdram_a_sbe 1 long_name String EDACSDRAM_A_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_A_SBE bit current_read_sdram_buffer 1 long_name String CurrentReadSDRAMBuffer changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the CurrentReadSDRAMBuffer bit eventtag_fifo_went_full 1 long_name String EventTag_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EventTag_FIFOWentFull bit edac_start_tracking_fifo_dbe 1 long_name String EDACStartTrackingFIFO_DBE changes units String 1 contentType String qualityInformation description String Number of changes in the EDACStartTrackingFIFO_DBE bit source String dfc_hk spw_parity_err_cnt 1 long_name String SpWParityErrorCount changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpWParityErrorCount bit eventtag_fifo_empty 1 long_name String EventTag_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EventTag_FIFOEmpty bit edac_card_readout_ram_dbe 1 long_name String EDACCardReadoutRAM_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardReadoutRAM_DBE bit edac_mf_number_dbe 1 long_name String EDACMFNumber_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACMFNumber_DBE bit alt_last_opcode 1 long_name String alt_last_opcode changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_last_opcode edac_burst_fifo_dbe 1 long_name String EDACBurstFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACBurstFIFO_DBE bit starttag_fifo_empty 1 long_name String StartTag_FIFOEmpty changes units String 1 contentType String qualityInformation description String Number of changes in the StartTag_FIFOEmpty bit source String dfc_hk Description String Per-PCE event count statistics pce3 edac_starttag_fifo_dbe 1 long_name String EDACStartTagFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTagFIFO_DBE bit tdc_fifo_empty 1 long_name String TDC_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_FIFOEmpty bit burst_fifo_empty 1 long_name String Burst_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Burst_FIFOEmpty bit tdc_fifo_went_full 1 long_name String TDC_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_FIFOWentFull bit alt_t0_cnt 1 long_name String alt_t0_cnt instances units String 1 source String dfc_hk contentType String qualityInformation description String Number of instances where the alt_t0_cnt increment is not 200. sdram_mismatch_err 1 long_name String SDRAMMismatch_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SDRAMMismatch_Err bit mframe_gap 1 long_name String major frame gap instances units String 1 source String dfc_hk contentType String qualityInformation description String Number of instances where there is a gap in the major_frame counter values. did_not_finish_writing_data_err 1 long_name String DidNotFinishWritingData_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the DidNotFinishWritingData_Err bit tdc_fifo_half_full 1 long_name String TDC_FIFOHalfFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_FIFOHalfFull bit did_not_finish_transfer_err 1 long_name String DidNotFinishTransfer_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the DidNotFinishTransfer_Err bit alt_sci_seg_limit 1 long_name String alt_sci_seg_limit changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_sci_seg_limit tdc_weak_path_err 1 long_name String TDC_WeakPath_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_WeakPath_Err bit edac_card_readout_ram_sbe 1 long_name String EDACCardReadoutRAM_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardReadoutRAM_SBE bit edac_mf_number_sbe 1 long_name String EDACMFNumber_SBE changes units String 1 contentType String qualityInformation description String Number of changes in the EDACMFNumber_SBE bit source String dfc_hk packetizer_a_fifo_went_full 1 long_name String PacketizerA_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerA_FIFOWentFull bit spw_rx_invalid_opcode_err 1 long_name String SpwRxInvalidOpcode_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpwRxInvalidOpcode_Err bit edac_packet_fifo_b_dbe 1 long_name String EDACPacketFIFO_B_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_B_DBE bit alt_gp_reg 1 long_name String alt_gp_reg changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_gp_reg edac_card_creation_ram_sbe 1 long_name String EDACCardCreationRAM_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardCreationRAM_SBE bit nested_exit 1 long_name String Number of nested_exits units String 1 source String dfc_hk contentType String qualityInformation description String Number of instances where a nested_exit condition is possible. mode 1 long_name String mode changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the mode cmd_err_cntr 1 long_name String cmd_err_cntr changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the cmd_err_cntr starttag_fifo_went_full 1 long_name String StartTag_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the StartTag_FIFOWentFull bit packetizer_a_fifo_empty 1 long_name String PacketizerA_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerA_FIFOEmpty bit edac_burst_fifo_sbe 1 long_name String EDACBurstFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACBurstFIFO_SBE bit edac_singlebit_error_cnt 1 long_name String EDACSingleBitErrorCnt changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSingleBitErrorCnt byte spw_rx_invalid_length_err 1 long_name String SpwRxInvalidLength_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpwRxInvalidLength_Err bit edac_sdram_a_dbe 1 long_name String EDACSDRAM_A_DBEchanges units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_A_DBE bit spw_not_ready_cnt 1 long_name String spw_not_ready_cnt changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in spw_not_ready_cnt alt_write_watchdog 1 long_name String alt_write_watchdog changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_write_watchdog tracking_fifo_empty 1 long_name String Tracking_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Tracking_FIFOEmpty bit start_data_collection 1 long_name String StartDataCollection changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the StartDataCollection bit edac_packet_fifo_b_sbe 1 long_name String EDACPacketFIFO_B_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_B_SBE bit alt_dupe_margin 1 long_name String alt_dupe_margin changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_dupe_margin edac_start_tag_fifo_sbe 1 long_name String EDACStartTagFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTagFIFO_SBE bit edac_start_tracking_fifo_sbe 1 long_name String EDACStartTrackingFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTrackingFIFO_SBE bit autorestartdfccount 1 long_name String autorestartdfccount changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the autorestartdfccount edac_packet_fifo_a_dbe 1 long_name String EDACPacketFIFO_A_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_A_DBE bit alt_mframe_freq 1 long_name String alt_mframe_freq changes units String 1 contentType String qualityInformation description String Number of changes in the alt_mframe_freq source String dfc_hk edac_card_flag_ram_sbe 1 long_name String EDACCardFlagRAM_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardFlagRAM_SBE bit edac_sdram_b_sbe 1 long_name String EDACSDRAM_B_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_B_SBE bit alt_config 1 long_name String alt_config changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_config edac_start_tag_fifo_dbe 1 long_name String EDACStartTagFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACStartTagFIFO_DBE bit spw_rx_eep_err 1 long_name String SpwRxEEP_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpwRxEEP_Err bit spw_disconnect_err_cnt 1 long_name String SpWDisconnectErrorCount changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpWDisconnectErrorCount bit edac_eventtag_fifo_dbe 1 long_name String EDACEventTagFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACEventTagFIFO_DBE bit edac_eventtag_fifo_sbe 1 long_name String EDACEventTagFIFO_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACEventTagFIFO_SBE bit tdc_strong_path_err 1 long_name String TDC_StrongPath_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TDC_StrongPath_Err bit activeknobstable 1 long_name String activeknobstable changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the activeknobstable packetizer_b_fifo_empty 1 long_name String PacketizerB_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerB_FIFOEmpty bit tracking_fifo_went_full 1 long_name String Tracking_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Tracking_FIFOWentFull bit alt_sci_addr 1 long_name String alt_sci_addr changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_sci_addr tx_pulses_in_majorframe 1 long_name String TxPulsesInMajorFrame changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the TxPulsesInMajorFrame bit edac_card_creation_ram_dbe 1 long_name String EDACCardCreationRAM_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardCreationRAM_DBE bit cmd_suc_cntr 1 long_name String cmd_suc_cntr changes units String 1 source String pmf_hk contentType String qualityInformation description String Number of changes in the cmd_suc_cntr edac_packet_fifo_a_sbe 1 long_name String EDACPacketFIFO_A_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACPacketFIFO_A_SBE bit alt_wait_watchdog 1 long_name String alt_wait_watchdog changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_wait_watchdog packetizer_b_fifo_went_full 1 long_name String PacketizerB_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the PacketizerB_FIFOWentFull bit burst_fifo_went_full 1 long_name String Burst_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the Burst_FIFOWentFull bit spw_debug_mux_out 1 long_name String SpWDebugMuxOut changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpWDebugMuxOut bit range_window_dropout_err 1 long_name String RangeWindowDropout_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the RangeWindowDropout_Err bit edac_sdram_b_dbe 1 long_name String EDACSDRAM_B_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_B_DBE bit card_data_not_finished_err 1 long_name String CardDataNotFinished_Err changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the CardDataNotFinished_Err bit alt_debug_reg 1 long_name String alt_debug_reg changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_debug_reg alt_cmd_cnt 1 long_name String alt_cmd_cnt increments units String 1 source String dfc_hk contentType String qualityInformation description String Number of increments in the alt_cmd_cnt alt_cal_interval 1 long_name String alt_cal_interval changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_cal_interval edac_sdram_a_sbe 1 long_name String EDACSDRAM_A_SBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACSDRAM_A_SBE bit current_read_sdram_buffer 1 long_name String CurrentReadSDRAMBuffer changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the CurrentReadSDRAMBuffer bit eventtag_fifo_went_full 1 long_name String EventTag_FIFOWentFull changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EventTag_FIFOWentFull bit edac_start_tracking_fifo_dbe 1 long_name String EDACStartTrackingFIFO_DBE changes units String 1 contentType String qualityInformation description String Number of changes in the EDACStartTrackingFIFO_DBE bit source String dfc_hk spw_parity_err_cnt 1 long_name String SpWParityErrorCount changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the SpWParityErrorCount bit eventtag_fifo_empty 1 long_name String EventTag_FIFOEmpty changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EventTag_FIFOEmpty bit edac_card_readout_ram_dbe 1 long_name String EDACCardReadoutRAM_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACCardReadoutRAM_DBE bit edac_mf_number_dbe 1 long_name String EDACMFNumber_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACMFNumber_DBE bit alt_last_opcode 1 long_name String alt_last_opcode changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the alt_last_opcode edac_burst_fifo_dbe 1 long_name String EDACBurstFIFO_DBE changes units String 1 source String dfc_hk contentType String qualityInformation description String Number of changes in the EDACBurstFIFO_DBE bit starttag_fifo_empty 1 long_name String StartTag_FIFOEmpty changes units String 1 contentType String qualityInformation description String Number of changes in the StartTag_FIFOEmpty bit source String dfc_hk Description String Per-PCE event count statistics record_counts delta_time_start 1 delta_time_start /quality_assessment/record_counts/delta_time_start long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of seconds since the ATLAS SDP epoch at the start of the QA interval. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. qa_n_lrs_laser_cent /quality_assessment/record_counts/delta_time_start long_name String Number of LRS Laser Centroid inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of LRS Laser Centroid inputs processed. coordinates String delta_time_start qa_n_lrs_laser_window /quality_assessment/record_counts/delta_time_start long_name String Number of LRS Laser Window inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of LRS Laser Window inputs processed. coordinates String delta_time_start qa_n_a_hkt_e /quality_assessment/record_counts/delta_time_start long_name String Number of A_HKT_E inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_HKT_E inputs processed. coordinates String delta_time_start qa_n_a_hkt_b /quality_assessment/record_counts/delta_time_start long_name String Number of A_HKT_B inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_HKT_B inputs processed. coordinates String delta_time_start qa_n_a_hkt_d /quality_assessment/record_counts/delta_time_start long_name String Number of A_HKT_D inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_HKT_D inputs processed. coordinates String delta_time_start qa_n_a_hkt_status /quality_assessment/record_counts/delta_time_start long_name String Number of A_HKT_STATUS inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_HKT_STATUS inputs processed. coordinates String delta_time_start qa_n_sc3 /quality_assessment/record_counts/delta_time_start long_name String Number of SC3 inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of SC3 inputs processed. coordinates String delta_time_start qa_n_lrs_hk /quality_assessment/record_counts/delta_time_start long_name String Number of LRS HK inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of LRS HK inputs processed. coordinates String delta_time_start qa_n_lrs_stellar_cent /quality_assessment/record_counts/delta_time_start long_name String Number of LRS Stellar Centroid inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of LRS Stellar Centroid inputs processed. coordinates String delta_time_start qa_n_lrs_stellar_window /quality_assessment/record_counts/delta_time_start long_name String Number of LRS Stellar Window inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of LRS Stellar Window inputs processed. coordinates String delta_time_start qa_n_a_sla_hk /quality_assessment/record_counts/delta_time_start long_name String Number of A_SLA_HK inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_SLA_HK inputs processed. coordinates String delta_time_start qa_n_a_mce_pos /quality_assessment/record_counts/delta_time_start long_name String Number of A_MCE_POS inputs. units String counts contentType String qualityInformation description String The number of A_MCE_POS inputs processed. coordinates String delta_time_start source String Derived (QA) qa_n_a_hkt_c /quality_assessment/record_counts/delta_time_start long_name String Number of A_HKT_C inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_HKT_C inputs processed. coordinates String delta_time_start qa_n_sc4 /quality_assessment/record_counts/delta_time_start long_name String Number of SC4 inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of SC4 inputs processed. coordinates String delta_time_start qa_n_a_hkt_a /quality_assessment/record_counts/delta_time_start long_name String Number of A_HKT_A inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_HKT_A inputs processed. coordinates String delta_time_start delta_time_end /quality_assessment/record_counts/delta_time_start long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of seconds since the ATLAS SDP epoch at the end of the interval. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. qa_n_a_sc_pon /quality_assessment/record_counts/delta_time_start long_name String Number of A_SC_PON inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_SC_PON inputs processed. coordinates String delta_time_start qa_n_sc1 /quality_assessment/record_counts/delta_time_start long_name String Number of SC1 inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of SC1 inputs processed. coordinates String delta_time_start qa_n_a_sc_pos /quality_assessment/record_counts/delta_time_start long_name String Number of A_SC_POS inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_SC_POS inputs processed. coordinates String delta_time_start qa_n_a_sc_tat /quality_assessment/record_counts/delta_time_start long_name String Number of A_SC_TAT inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_SC_TAT inputs processed. coordinates String delta_time_start qa_n_lrs_laser_image /quality_assessment/record_counts/delta_time_start long_name String Number of LRS Laser Image inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of LRS Laser Image inputs processed. coordinates String delta_time_start qa_n_lrs_stellar_image /quality_assessment/record_counts/delta_time_start long_name String Number of LRS Stellar Image inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of LRS Stellar Image inputs processed. coordinates String delta_time_start qa_n_sim_hk /quality_assessment/record_counts/delta_time_start long_name String Number of SIM_HK inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of SIM_HK inputs processed. coordinates String delta_time_start qa_n_sc2 /quality_assessment/record_counts/delta_time_start long_name String Number of SC2 inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of SC2 inputs processed. coordinates String delta_time_start qa_n_lrs_tams_window /quality_assessment/record_counts/delta_time_start long_name String Number of LRS TAMS Window inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of LRS TAMS Window inputs processed. coordinates String delta_time_start Description String Packet count statistics pce1 qa_n_alt_mframe /quality_assessment/record_counts/delta_time_start long_name String Number of major frame inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of major frame inputs processed. coordinates String ../delta_time_start qa_n_atm_hist_s /quality_assessment/record_counts/delta_time_start long_name String Number of ATM Strong inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of ATM strong inputs processed. coordinates String ../delta_time_start qa_n_atm_hist_w /quality_assessment/record_counts/delta_time_start long_name String Number of ATM weak inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of ATM weak inputs processed. coordinates String ../delta_time_start qa_n_pmf_algorithm_science /quality_assessment/record_counts/delta_time_start long_name String Number of PMF Algorithm Science inputs. units String counts contentType String qualityInformation description String The number of PMF Algorithm Science inputs processed. coordinates String ../delta_time_start source String Derived (QA) qa_n_pmf_timekeeping 1 long_name String Number of PMF Timekeeping inputs. units String counts contentType String qualityInformation description String The number of PMF TImekeeping inputs processed. coordinates String ../delta_time_start source String Derived (QA) qa_n_a_dfc_hk 1 long_name String Number of DFC HK Inputs units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_DFC_HK inputs processed. coordinates String ../delta_time_start qa_n_sxp_ssr /quality_assessment/record_counts/delta_time_start long_name String Number of SXP_SSR inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of SXP_SSR processed. coordinates String ../delta_time_start pce2 qa_n_alt_mframe /quality_assessment/record_counts/delta_time_start long_name String Number of major frame inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of major frame inputs processed. coordinates String ../delta_time_start qa_n_atm_hist_s /quality_assessment/record_counts/delta_time_start long_name String Number of ATM Strong inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of ATM strong inputs processed. coordinates String ../delta_time_start qa_n_atm_hist_w /quality_assessment/record_counts/delta_time_start long_name String Number of ATM weak inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of ATM weak inputs processed. coordinates String ../delta_time_start qa_n_pmf_algorithm_science /quality_assessment/record_counts/delta_time_start long_name String Number of PMF Algorithm Science inputs. units String counts contentType String qualityInformation description String The number of PMF Algorithm Science inputs processed. coordinates String ../delta_time_start source String Derived (QA) qa_n_pmf_timekeeping 1 long_name String Number of PMF Timekeeping inputs. units String counts contentType String qualityInformation description String The number of PMF TImekeeping inputs processed. coordinates String ../delta_time_start source String Derived (QA) qa_n_a_dfc_hk 1 long_name String Number of DFC HK Inputs units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_DFC_HK inputs processed. coordinates String ../delta_time_start qa_n_sxp_ssr /quality_assessment/record_counts/delta_time_start long_name String Number of SXP_SSR inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of SXP_SSR processed. coordinates String ../delta_time_start pce3 qa_n_alt_mframe /quality_assessment/record_counts/delta_time_start long_name String Number of major frame inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of major frame inputs processed. coordinates String ../delta_time_start qa_n_atm_hist_s /quality_assessment/record_counts/delta_time_start long_name String Number of ATM Strong inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of ATM strong inputs processed. coordinates String ../delta_time_start qa_n_atm_hist_w /quality_assessment/record_counts/delta_time_start long_name String Number of ATM weak inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of ATM weak inputs processed. coordinates String ../delta_time_start qa_n_pmf_algorithm_science /quality_assessment/record_counts/delta_time_start long_name String Number of PMF Algorithm Science inputs. units String counts contentType String qualityInformation description String The number of PMF Algorithm Science inputs processed. coordinates String ../delta_time_start source String Derived (QA) qa_n_pmf_timekeeping 1 long_name String Number of PMF Timekeeping inputs. units String counts contentType String qualityInformation description String The number of PMF TImekeeping inputs processed. coordinates String ../delta_time_start source String Derived (QA) qa_n_a_dfc_hk 1 long_name String Number of DFC HK Inputs units String counts source String Derived (QA) contentType String qualityInformation description String The number of A_DFC_HK inputs processed. coordinates String ../delta_time_start qa_n_sxp_ssr /quality_assessment/record_counts/delta_time_start long_name String Number of SXP_SSR inputs. units String counts source String Derived (QA) contentType String qualityInformation description String The number of SXP_SSR processed. coordinates String ../delta_time_start summary delta_time_start 1 delta_time_start /quality_assessment/summary/delta_time_start long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. qa_lrs_temp 1 long_name String Num LRS Temp OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the LRS temperature is outside the limit of -20 to 50 degC. coordinates String delta_time_start qa_bias_offset_x 1 long_name String Num Bias Offset X OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the bias offset X value is outside the limit of -70 to 70 microradians. coordinates String delta_time_start qa_s_tod_a_sla_hk /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for a_sla_hk TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive A_SLA_HK time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_s_tod_sc_imu /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for sc_imu TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /sc/intertial_measurement_unit time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_lrs_inv_mag 1 6 long_name String Num LRS Mag Invalid units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where an LRS laser magnitude is outside the limit of 0-500. coordinates String delta_time_start qa_cal47_temp 1 long_name String CAL47 temperature OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the CAL-47 temperature is outside the limit of -20 to 50 degC. coordinates String delta_time_start qa_time_corr 1 long_name String Shot Time correlation OOB units String counts source String Derived (QA) contentType String qualityInformation description String Where the ratio of unaligned shots/aligned shots exceeds the limit of 0.9; 0=Doesn?t Exceed Limit, 1=Exceeds Limit coordinates String delta_time_start qa_s_tod_hk_meb /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for hk_pdu TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/housekeeping/meb time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_internal_temp 1 long_name String Num Internal Temp OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where input laser temperature values exceed the limit of 20 to 40 degC. coordinates String delta_time_start qa_internal_energy 1 long_name String Num Internal Energy OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where input internal laser energy values exceed the limit of 0 to 200 counts. coordinates String delta_time_start qa_spd_temp 1 long_name String Num SPD Temp OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where SPD temperature values exceed the limit of -20 to 50 degC. coordinates String delta_time_start qa_s_tod_gpsr /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for gpsr TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /gpsr time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_lrs_inv_sum 1 long_name String Num LRS Sums Invalid units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the sum of the 6 LRS laser spots is outside the limit of 0 to 2000. coordinates String delta_time_start qa_hvpc_mod_5 1 long_name String Num HVPC Bias Mod 5 OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the HVPC Bias Mod5 value is outside the limit of -2000 to 0 counts. coordinates String delta_time_start qa_bias_offset_y 1 long_name String Num Bias Offset Y OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the bias offset Y value is outside the limit of -70 to 70 microradians. coordinates String delta_time_start qa_fw_flag 1 long_name String Freewheel Indicated units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the freewheel flag is non-zero. coordinates String delta_time_start qa_s_tod_hk_pointing /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for hk_pointing TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/housekeeping/pointing time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_hvpc_mod_6 1 long_name String Num HVPC Bias Mod 6 OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the HVPC Bias Mod6 value is outside the limit of -2000 to 0 counts. coordinates String delta_time_start qa_int_e_tx 1 long_name String Num Internal Energy OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed total internal laser energy is outside the limit of 130 to 2700 microjoules. coordinates String delta_time_start delta_time_end /quality_assessment/summary/delta_time_start long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of seconds since the ATLAS SDP epoch at the end of the QA interval. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. qa_s_tod_hk_pdu /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for hk_pdu TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/housekeeping/pdu time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_s_tod_hk_thermal /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for hk_therm TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/housekeeping/hk_thermal time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_s_tod_sc_stoh1 /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for sc_star_tracker_oh1 TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /sc/star_tracker/optical_head1 time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_s_tod_hk_laser_energy /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for hk_laser_energy TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/housekeeping/laser_energy time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_s_tod_mce_position 1 5 long_name String QA for mce_position TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/housekeeping/mce_position time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_s_tod_sc_acs /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for acs TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /sc/attitude_control_system time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_spd_energy 1 long_name String Num SPD Energy OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where input SPD laser energy values exceed the limit of -30000 to 0 counts. coordinates String delta_time_start qa_hvpc_mod_1 1 long_name String Num HVPC Bias Mod 1 OOB units String counts contentType String qualityInformation description String Number of instances where the HVPC Bias Mod1 value is outside the limit of -2000 to 0 counts. coordinates String delta_time_start source String Derived (QA) qa_s_tod_sc_st /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for sc_star_tracker TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /sc/star_tracker time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_hvpc_mod_3 1 long_name String Num HVPC Bias Mod 3 OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the HVPC Bias Mod3 value is outside the limit of -2000 to 0 counts. coordinates String delta_time_start qa_spd_e_tx 1 long_name String Num SPD Energy OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed total SPD laser energy is outside the limit of 130 to 2700 microjoules. coordinates String delta_time_start qa_lrs_e_tx 1 long_name String Num LRS Energy OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed total LRS laser energy is outside the limit of 130 to 2700 microjoules. coordinates String delta_time_start qa_lrs_inv_spot 1 long_name String Num LRS Spots Missing units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where not all 6 laser spots are valid when computing LRS laser energy. coordinates String delta_time_start qa_amet_r1 1 long_name String AMET Increment OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the difference between external AMET counter and the GPS 1PPS exceeds the limit of 1.0. coordinates String delta_time_start qa_hvpc_mod_4 1 long_name String Num HVPC Bias Mod 4 OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the HVPC Bias Mod4 value is outside the limit of -2000 to 0 counts. coordinates String delta_time_start qa_s_tod_hk_tat /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for hk_tat TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/housekeeping/time_at_the_tone time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_s_tod_hk_pos_vel /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for hk_pos_vel TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/housekeeping/position_velocity time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_s_tod_sc_ephemeris /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for sc_ephemeris TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /sc/ephemeris time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_s_tod_sc_stoh2 /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for sc_star_tracker_oh2 TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /sc/star_tracker/optical_head2 time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start qa_hvpc_mod_2 1 long_name String Num HVPC Bias Mod 2 OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the HVPC Bias Mod2 value is outside the limit of -2000 to 0 counts. coordinates String delta_time_start qa_amet_r2 1 long_name String AMET Increment OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the difference between internal AMET at 1PPS and GPS 1PPS exceed the limit of 100.e6. coordinates String delta_time_start qa_s_tod_sc_hk /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for sc_hk TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /sc/hk time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String delta_time_start Description String Summary statistics pce1 qa_s_alt_cal_fall /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA alt_cal_fall units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of the full-rate (before interpolation) alt_cal_fall computation. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_tx_leading_fine 1 long_name String Tx Leading Fine Count OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the Tx leading fine count value exceeds the limit of 75 counts. coordinates String ../delta_time_start qa_rx_fine_count 1 long_name String Rx Fine Count OOB units String counts contentType String qualityInformation description String Number of instances where the Rx fine count value exceeds the limit of 75 counts. coordinates String ../delta_time_start source String Derived (QA) qa_s_n_mf_skip 1 long_name String QA 1P MF missed units String counts source String Derived via L1B ATBD contentType String qualityInformation description String The number of times major frame counter was not consecutive. coordinates String ../delta_time_start qa_rx_channel_id 1 long_name String Rx Channel ID OOB units String counts contentType String qualityInformation description String Number of instances where the Rx channel ID contains an unexpected value. coordinates String ../delta_time_start source String Derived (QA) qa_ret_sens_w 1 long_name String Num Weak Return Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed weak return sensitivity value is outside the limit of 0 to 2e18. coordinates String ../delta_time_start qa_s_tod_method 1 5 long_name String QA from TOD Methods units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between Time_T0_Method1 and Time _T0_Method2. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_tep_tof 1 long_name String Num TEP OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where TEP TOF values exceed the limit of 0 to 110ns. coordinates String ../delta_time_start qa_rx_coarse_count 1 long_name String Rx Coarse Count OOB units String counts contentType String qualityInformation description String Number of instances where the Rx coarse count value exceeds the limit of 10000 counts. coordinates String ../delta_time_start source String Derived (QA) qa_ret_sens_s 1 long_name String Num Strong Return Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed strong return sensitivity value is outside the limit of 0 to 2e18. coordinates String ../delta_time_start qa_s_tod_atm_hist_w 1 5 long_name String QA for atm_hist_w TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/atmosphere_weak time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_n_tep /quality_assessment/summary/delta_time_start long_name String Number of TEPs units String counts source String Derived (QA) contentType String qualityInformation description String The number of TEP events detected in the granule. coordinates String ../delta_time_start qa_s_alt_cal_rise /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA alt_cal_rise units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of the full-rate (before interpolation) alt_cal_rise computation. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_tod_atm_hist_s /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for atm_his_st TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/atmosphere_strong time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_tod_background /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for pcex_background TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/background time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_n_tx_oob /quality_assessment/summary/delta_time_start long_name String QA number of instances TX out of bounds units String counts source String Derived via L1B ATBD contentType String referenceInformation description String The number of times the Tx count is out of bounds (oob); i.e.: 199 to 201 TX pulses were not reported in a major frame. coordinates String ../delta_time_start qa_s_tx_other_stat /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx Other Stat units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of the Other Transmit time of flight measurement. For PCE1, this is Transmit Leading Upper edge (LU) time; for PCE2 this is Transmit Trailing Upper edge (TU) time; and for PCE3 this is Transmit Trailing Lower edge (TL) time. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_dupe_percent 1 20 long_name String Channel Dupe Percent OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the per-channel number of duplicates is greater than 10% of the total number of per-channel events. coordinates String ../delta_time_start qa_bg_sens_w 1 long_name String Num Weak Bg Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed weak background sensitivity value is outside the limit of 5e17 to 2e18. coordinates String ../delta_time_start qa_s_n_rx_w /quality_assessment/summary/delta_time_start long_name String Number of Weak Rx Events units String counts source String Derived (QA) contentType String qualityInformation description String The number of Weak Rx events in the granule. coordinates String ../delta_time_start qa_s_n_1pps_skip 1 long_name String QA 1PPS missed units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Number of times 1 pps was not consecutive. coordinates String ../delta_time_start qa_s_n_rx_s /quality_assessment/summary/delta_time_start long_name String Number of Strong Rx Events units String counts source String Derived (QA) contentType String qualityInformation description String The number of Strong Rx events in the granule. coordinates String ../delta_time_start qa_s_tod_alt /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for pcex_alt TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/altimetry time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_n_missed_thres 1 long_name String Number of Missed Tx Threshold Crossings units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx pulses in which a missed threshold crossing was detected. The condition occurs if the Tx leading and trailing fine raw counts are the exact same value. coordinates String ../delta_time_start qa_s_n_tx /quality_assessment/summary/delta_time_start long_name String Number of Tx Pulses units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx Pulses in the granule. coordinates String ../delta_time_start qa_tx_coarse_count 1 long_name String Tx Coarse Count OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the Tx coarse count value exceeds the limit of 10000 counts. coordinates String ../delta_time_start qa_tx_trailing_fine 1 long_name String Tx Trailing Fine Count OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the Tx trailing fine count value exceeds the limit of 75 counts. coordinates String ../delta_time_start qa_s_n_dupe /quality_assessment/summary/delta_time_start long_name String Number of duplicates units String counts source String Derived (QA) contentType String qualityInformation description String The number of duplicate Rx events detected in the granule. coordinates String ../delta_time_start qa_ph_tx_ll 1 long_name String Tx LL OOB units String counts source String Derived (QA) contentType String qualityInformation description String Where the maximum minus minimum Tx leading lower exceeds the limit of 39 ns. coordinates String ../delta_time_start qa_s_n_swapped_txfine 1 long_name String Number of Tx Fine Swaps units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx pulses for which a PCE anomaly forced the Tx fine count values to be swapped. coordinates String ../delta_time_start qa_s_tx_ll_stat /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx LL Stat units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of Transmit Leading Lower time of flight. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_bg_sens_s 1 long_name String Num Strong Bg Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed strong background sensitivity value is outside the limit of 5e17 to 2e18. coordinates String ../delta_time_start pce2 qa_s_alt_cal_fall /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA alt_cal_fall units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of the full-rate (before interpolation) alt_cal_fall computation. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_tx_leading_fine 1 long_name String Tx Leading Fine Count OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the Tx leading fine count value exceeds the limit of 75 counts. coordinates String ../delta_time_start qa_rx_fine_count 1 long_name String Rx Fine Count OOB units String counts contentType String qualityInformation description String Number of instances where the Rx fine count value exceeds the limit of 75 counts. coordinates String ../delta_time_start source String Derived (QA) qa_s_n_mf_skip 1 long_name String QA 1P MF missed units String counts source String Derived via L1B ATBD contentType String qualityInformation description String The number of times major frame counter was not consecutive. coordinates String ../delta_time_start qa_rx_channel_id 1 long_name String Rx Channel ID OOB units String counts contentType String qualityInformation description String Number of instances where the Rx channel ID contains an unexpected value. coordinates String ../delta_time_start source String Derived (QA) qa_ret_sens_w 1 long_name String Num Weak Return Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed weak return sensitivity value is outside the limit of 0 to 2e18. coordinates String ../delta_time_start qa_s_tod_method 1 5 long_name String QA from TOD Methods units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between Time_T0_Method1 and Time _T0_Method2. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_tep_tof 1 long_name String Num TEP OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where TEP TOF values exceed the limit of 0 to 110ns. coordinates String ../delta_time_start qa_rx_coarse_count 1 long_name String Rx Coarse Count OOB units String counts contentType String qualityInformation description String Number of instances where the Rx coarse count value exceeds the limit of 10000 counts. coordinates String ../delta_time_start source String Derived (QA) qa_ret_sens_s 1 long_name String Num Strong Return Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed strong return sensitivity value is outside the limit of 0 to 2e18. coordinates String ../delta_time_start qa_s_tod_atm_hist_w 1 5 long_name String QA for atm_hist_w TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/atmosphere_weak time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_n_tep /quality_assessment/summary/delta_time_start long_name String Number of TEPs units String counts source String Derived (QA) contentType String qualityInformation description String The number of TEP events detected in the granule. coordinates String ../delta_time_start qa_s_alt_cal_rise /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA alt_cal_rise units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of the full-rate (before interpolation) alt_cal_rise computation. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_tod_atm_hist_s /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for atm_his_st TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/atmosphere_strong time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_tod_background /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for pcex_background TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/background time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_n_tx_oob /quality_assessment/summary/delta_time_start long_name String QA number of instances TX out of bounds units String counts source String Derived via L1B ATBD contentType String referenceInformation description String The number of times the Tx count is out of bounds (oob); i.e.: 199 to 201 TX pulses were not reported in a major frame. coordinates String ../delta_time_start qa_s_tx_other_stat /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx Other Stat units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of the Other Transmit time of flight measurement. For PCE1, this is Transmit Leading Upper edge (LU) time; for PCE2 this is Transmit Trailing Upper edge (TU) time; and for PCE3 this is Transmit Trailing Lower edge (TL) time. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_dupe_percent 1 20 long_name String Channel Dupe Percent OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the per-channel number of duplicates is greater than 10% of the total number of per-channel events. coordinates String ../delta_time_start qa_bg_sens_w 1 long_name String Num Weak Bg Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed weak background sensitivity value is outside the limit of 5e17 to 2e18. coordinates String ../delta_time_start qa_s_n_rx_w /quality_assessment/summary/delta_time_start long_name String Number of Weak Rx Events units String counts source String Derived (QA) contentType String qualityInformation description String The number of Weak Rx events in the granule. coordinates String ../delta_time_start qa_s_n_1pps_skip 1 long_name String QA 1PPS missed units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Number of times 1 pps was not consecutive. coordinates String ../delta_time_start qa_s_n_rx_s /quality_assessment/summary/delta_time_start long_name String Number of Strong Rx Events units String counts source String Derived (QA) contentType String qualityInformation description String The number of Strong Rx events in the granule. coordinates String ../delta_time_start qa_s_tod_alt /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for pcex_alt TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/altimetry time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_n_missed_thres 1 long_name String Number of Missed Tx Threshold Crossings units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx pulses in which a missed threshold crossing was detected. The condition occurs if the Tx leading and trailing fine raw counts are the exact same value. coordinates String ../delta_time_start qa_s_n_tx /quality_assessment/summary/delta_time_start long_name String Number of Tx Pulses units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx Pulses in the granule. coordinates String ../delta_time_start qa_tx_coarse_count 1 long_name String Tx Coarse Count OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the Tx coarse count value exceeds the limit of 10000 counts. coordinates String ../delta_time_start qa_tx_trailing_fine 1 long_name String Tx Trailing Fine Count OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the Tx trailing fine count value exceeds the limit of 75 counts. coordinates String ../delta_time_start qa_s_n_dupe /quality_assessment/summary/delta_time_start long_name String Number of duplicates units String counts source String Derived (QA) contentType String qualityInformation description String The number of duplicate Rx events detected in the granule. coordinates String ../delta_time_start qa_ph_tx_ll 1 long_name String Tx LL OOB units String counts source String Derived (QA) contentType String qualityInformation description String Where the maximum minus minimum Tx leading lower exceeds the limit of 39 ns. coordinates String ../delta_time_start qa_s_n_swapped_txfine 1 long_name String Number of Tx Fine Swaps units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx pulses for which a PCE anomaly forced the Tx fine count values to be swapped. coordinates String ../delta_time_start qa_s_tx_ll_stat /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx LL Stat units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of Transmit Leading Lower time of flight. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_bg_sens_s 1 long_name String Num Strong Bg Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed strong background sensitivity value is outside the limit of 5e17 to 2e18. coordinates String ../delta_time_start pce3 qa_s_alt_cal_fall /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA alt_cal_fall units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of the full-rate (before interpolation) alt_cal_fall computation. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_tx_leading_fine 1 long_name String Tx Leading Fine Count OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the Tx leading fine count value exceeds the limit of 75 counts. coordinates String ../delta_time_start qa_rx_fine_count 1 long_name String Rx Fine Count OOB units String counts contentType String qualityInformation description String Number of instances where the Rx fine count value exceeds the limit of 75 counts. coordinates String ../delta_time_start source String Derived (QA) qa_s_n_mf_skip 1 long_name String QA 1P MF missed units String counts source String Derived via L1B ATBD contentType String qualityInformation description String The number of times major frame counter was not consecutive. coordinates String ../delta_time_start qa_rx_channel_id 1 long_name String Rx Channel ID OOB units String counts contentType String qualityInformation description String Number of instances where the Rx channel ID contains an unexpected value. coordinates String ../delta_time_start source String Derived (QA) qa_ret_sens_w 1 long_name String Num Weak Return Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed weak return sensitivity value is outside the limit of 0 to 2e18. coordinates String ../delta_time_start qa_s_tod_method 1 5 long_name String QA from TOD Methods units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between Time_T0_Method1 and Time _T0_Method2. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_tep_tof 1 long_name String Num TEP OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where TEP TOF values exceed the limit of 0 to 110ns. coordinates String ../delta_time_start qa_rx_coarse_count 1 long_name String Rx Coarse Count OOB units String counts contentType String qualityInformation description String Number of instances where the Rx coarse count value exceeds the limit of 10000 counts. coordinates String ../delta_time_start source String Derived (QA) qa_ret_sens_s 1 long_name String Num Strong Return Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed strong return sensitivity value is outside the limit of 0 to 2e18. coordinates String ../delta_time_start qa_s_tod_atm_hist_w 1 5 long_name String QA for atm_hist_w TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/atmosphere_weak time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_n_tep 1 long_name String Number of TEPs units String counts source String Derived (QA) contentType String qualityInformation description String The number of TEP events detected in the granule. coordinates String ../delta_time_start qa_s_alt_cal_rise /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA alt_cal_rise units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of the full-rate (before interpolation) alt_cal_rise computation. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_tod_atm_hist_s /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for atm_his_st TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/atmosphere_strong time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_tod_background /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for pcex_background TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/background time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_n_tx_oob /quality_assessment/summary/delta_time_start long_name String QA number of instances TX out of bounds units String counts source String Derived via L1B ATBD contentType String referenceInformation description String The number of times the Tx count is out of bounds (oob); i.e.: 199 to 201 TX pulses were not reported in a major frame. coordinates String ../delta_time_start qa_s_tx_other_stat /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx Other Stat units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of the Other Transmit time of flight measurement. For PCE1, this is Transmit Leading Upper edge (LU) time; for PCE2 this is Transmit Trailing Upper edge (TU) time; and for PCE3 this is Transmit Trailing Lower edge (TL) time. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_dupe_percent 1 20 long_name String Channel Dupe Percent OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the per-channel number of duplicates is greater than 10% of the total number of per-channel events. coordinates String ../delta_time_start qa_bg_sens_w 1 long_name String Num Weak Bg Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed weak background sensitivity value is outside the limit of 5e17 to 2e18. coordinates String ../delta_time_start qa_s_n_rx_w /quality_assessment/summary/delta_time_start long_name String Number of Weak Rx Events units String counts source String Derived (QA) contentType String qualityInformation description String The number of Weak Rx events in the granule. coordinates String ../delta_time_start qa_s_n_1pps_skip 1 long_name String QA 1PPS missed units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Number of times 1 pps was not consecutive. coordinates String ../delta_time_start qa_s_n_rx_s /quality_assessment/summary/delta_time_start long_name String Number of Strong Rx Events units String counts source String Derived (QA) contentType String qualityInformation description String The number of Strong Rx events in the granule. coordinates String ../delta_time_start qa_s_tod_alt /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA for pcex_alt TOD units String counts source String Derived via L1B ATBD contentType String qualityInformation description String Summary statistics on the differences between successive /atlas/pcex/altimetry time of day values. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_s_n_missed_thres 1 long_name String Number of Missed Tx Threshold Crossings units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx pulses in which a missed threshold crossing was detected. The condition occurs if the Tx leading and trailing fine raw counts are the exact same value. coordinates String ../delta_time_start qa_s_n_tx /quality_assessment/summary/delta_time_start long_name String Number of Tx Pulses units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx Pulses in the granule. coordinates String ../delta_time_start qa_tx_coarse_count 1 long_name String Tx Coarse Count OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the Tx coarse count value exceeds the limit of 10000 counts. coordinates String ../delta_time_start qa_tx_trailing_fine 1 long_name String Tx Trailing Fine Count OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the Tx trailing fine count value exceeds the limit of 75 counts. coordinates String ../delta_time_start qa_s_n_dupe /quality_assessment/summary/delta_time_start long_name String Number of duplicates units String counts source String Derived (QA) contentType String qualityInformation description String The number of duplicate Rx events detected in the granule. coordinates String ../delta_time_start qa_ph_tx_ll 1 long_name String Tx LL OOB units String counts source String Derived (QA) contentType String qualityInformation description String Where the maximum minus minimum Tx leading lower exceeds the limit of 39 ns. coordinates String ../delta_time_start qa_s_n_swapped_txfine 1 long_name String Number of Tx Fine Swaps units String counts source String Derived (QA) contentType String qualityInformation description String The number of Tx pulses for which a PCE anomaly forced the Tx fine count values to be swapped. coordinates String ../delta_time_start qa_s_tx_ll_stat /quality_assessment/summary/delta_time_start /quality_assessment/ds_statistics long_name String QA Tx LL Stat units String counts source String Derived (QA) contentType String qualityInformation description String Summary statistic of Transmit Leading Lower time of flight. Values are in the order number_of_points, minimum, maximum, average, standard_deviation. coordinates String ../delta_time_start qa_bg_sens_s 1 long_name String Num Strong Bg Sensitivity OOB units String counts source String Derived (QA) contentType String qualityInformation description String Number of instances where the computed strong background sensitivity value is outside the limit of 5e17 to 2e18. coordinates String ../delta_time_start tof txrx_discard_count 1 long_name String TxRx Discard Count units String counts source String TxRx detection contentType String qualityInformation description String The number of Tx discarded because of data gaps when attempting to repair a TxRx slip. txrx_repair_count 1 long_name String TxRx Repair Count units String counts source String TxRx detection contentType String qualityInformation description String The number of Tx misalignments repaired for the PCE indicated in txrx_slip_repair. (0=no repair attempted) txrx_slip_repair 1 long_name String TxRx Repair flag units String 1 source String TxRx detection valid_min Int32 0 valid_max Int32 3 contentType String qualityInformation description String Indicates the PCE for which a txrx slip repair was attempted. (0=no repair attempted) flag_meanings String not_attempted pce1 pce2 pce3 flag_values Int32 0 1 2 3 Description String Contains statistics and flags related to TOF QA. pce2 beg_mframe_cnt 1 long_name String Beginning major frame counter units String counts source String TxRx detection contentType String qualityInformation description String Major frame count at the start of a Tx misalignment. ne_conf 1 long_name String Nested Exit Confidence units String 1 source String TxRx detection contentType String qualityInformation description String Confidence level set by nested-exit checks. hist_conf 1 long_name String Histogram Confidence units String 1 source String TxRx detection contentType String qualityInformation description String Confidence level set by analysis of TOF histograms. txrx_slip_flag 1 long_name String TxRx Slip Flag units String 1 source String TxRx detection valid_min Int32 0 valid_max Int32 2 contentType String qualityInformation description String Flag indicating if a TxRx slip condition was detected. flag_meanings String not_detected detected flag_values Int32 0 1 too_few_tx 1 long_name String Too_Few_Tx_in_MFrame units String 1 source String Tx processing contentType String qualityInformation description String The number of major frames with less than 199 Tx. The photons associated with these major frames have been discarded from processing. st_period 1 long_name String Sawtooth_Period units String 1/frequency contentType String qualityInformation description String Period of the Tx sawtooth. source String TxRx detection end_mframe_cnt 1 long_name String Ending major frame counter units String counts source String TxRx detection contentType String qualityInformation description String Major frame count at the end of a Tx misalignment. n_dnf 1 long_name String Number_of_DNF units String 1 source String Tx processing contentType String qualityInformation description String The number of major frames containing a DNF flag, which indicates that the major frame was truncated. By default, these partial major frames are removed from processing. slip_magnitude 1 long_name String TXRX_Slip_Magnitude units String seconds source String TxRx detection contentType String qualityInformation description String Average magnitude (and direction) of Tx sawtooth misalignment. ne_delta_time 4 _FillValue Float64 1.7976931348623157e+308 long_name String Nested Exit Times units String seconds since 2018-01-01 source String TxRx slip contentType String auxiliaryInformation description String Times of up to 4 NestedExit instances. Units are the number of seconds since the ATLAS SDP epoch. st_conf 1 long_name String Tx Align Confidence units String 1 source String TxRx detection contentType String qualityInformation description String Confidence level set by Tx alignment (sawtooth) checks. Description String Per-PCE TOF flags and statistics pce1 beg_mframe_cnt 1 long_name String Beginning major frame counter units String counts source String TxRx detection contentType String qualityInformation description String Major frame count at the start of a Tx misalignment. ne_conf 1 long_name String Nested Exit Confidence units String 1 source String TxRx detection contentType String qualityInformation description String Confidence level set by nested-exit checks. hist_conf 1 long_name String Histogram Confidence units String 1 source String TxRx detection contentType String qualityInformation description String Confidence level set by analysis of TOF histograms. txrx_slip_flag 1 long_name String TxRx Slip Flag units String 1 source String TxRx detection valid_min Int32 0 valid_max Int32 2 contentType String qualityInformation description String Flag indicating if a TxRx slip condition was detected. flag_meanings String not_detected detected flag_values Int32 0 1 too_few_tx 1 long_name String Too_Few_Tx_in_MFrame units String 1 source String Tx processing contentType String qualityInformation description String The number of major frames with less than 199 Tx. The photons associated with these major frames have been discarded from processing. st_period 1 long_name String Sawtooth_Period units String 1/frequency contentType String qualityInformation description String Period of the Tx sawtooth. source String TxRx detection end_mframe_cnt 1 long_name String Ending major frame counter units String counts source String TxRx detection contentType String qualityInformation description String Major frame count at the end of a Tx misalignment. n_dnf 1 long_name String Number_of_DNF units String 1 source String Tx processing contentType String qualityInformation description String The number of major frames containing a DNF flag, which indicates that the major frame was truncated. By default, these partial major frames are removed from processing. slip_magnitude 1 long_name String TXRX_Slip_Magnitude units String seconds source String TxRx detection contentType String qualityInformation description String Average magnitude (and direction) of Tx sawtooth misalignment. ne_delta_time 4 _FillValue Float64 1.7976931348623157e+308 long_name String Nested Exit Times units String seconds since 2018-01-01 source String TxRx slip contentType String auxiliaryInformation description String Times of up to 4 NestedExit instances. Units are the number of seconds since the ATLAS SDP epoch. st_conf 1 long_name String Tx Align Confidence units String 1 source String TxRx detection contentType String qualityInformation description String Confidence level set by Tx alignment (sawtooth) checks. Description String Per-PCE TOF flags and statistics pce3 beg_mframe_cnt 1 long_name String Beginning major frame counter units String counts source String TxRx detection contentType String qualityInformation description String Major frame count at the start of a Tx misalignment. ne_conf 1 long_name String Nested Exit Confidence units String 1 source String TxRx detection contentType String qualityInformation description String Confidence level set by nested-exit checks. hist_conf 1 long_name String Histogram Confidence units String 1 source String TxRx detection contentType String qualityInformation description String Confidence level set by analysis of TOF histograms. txrx_slip_flag 1 long_name String TxRx Slip Flag units String 1 source String TxRx detection valid_min Int32 0 valid_max Int32 2 contentType String qualityInformation description String Flag indicating if a TxRx slip condition was detected. flag_meanings String not_detected detected flag_values Int32 0 1 too_few_tx 1 long_name String Too_Few_Tx_in_MFrame units String 1 source String Tx processing contentType String qualityInformation description String The number of major frames with less than 199 Tx. The photons associated with these major frames have been discarded from processing. st_period 1 long_name String Sawtooth_Period units String 1/frequency contentType String qualityInformation description String Period of the Tx sawtooth. source String TxRx detection end_mframe_cnt 1 long_name String Ending major frame counter units String counts source String TxRx detection contentType String qualityInformation description String Major frame count at the end of a Tx misalignment. n_dnf 1 long_name String Number_of_DNF units String 1 source String Tx processing contentType String qualityInformation description String The number of major frames containing a DNF flag, which indicates that the major frame was truncated. By default, these partial major frames are removed from processing. slip_magnitude 1 long_name String TXRX_Slip_Magnitude units String seconds source String TxRx detection contentType String qualityInformation description String Average magnitude (and direction) of Tx sawtooth misalignment. ne_delta_time 4 _FillValue Float64 1.7976931348623157e+308 long_name String Nested Exit Times units String seconds since 2018-01-01 source String TxRx slip contentType String auxiliaryInformation description String Times of up to 4 NestedExit instances. Units are the number of seconds since the ATLAS SDP epoch. st_conf 1 long_name String Tx Align Confidence units String 1 source String TxRx detection contentType String qualityInformation description String Confidence level set by Tx alignment (sawtooth) checks. Description String Per-PCE TOF flags and statistics sc delta_time 423 delta_time /sc/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS Standard Data Product (SDP) epoch. By adding atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch time can be computed. sc_time_1pps_sec /sc/delta_time long_name String SC time at 1 pps (sec) units String seconds source String ATL01/sc contentType String referenceInformation description String SC time at the reception of the last 1PPS signal from the GPSR (seconds since SC epoch: 6-Jan-1980 00:00:00) coordinates String delta_time sc_time_1pps_subsec /sc/delta_time long_name String SC time at 1 pps (subsec) units String 100 nanoseconds source String ATL01/sc contentType String referenceInformation description String Subsecond portion of the SC time at the reception of the last 1PPS signal from the GPSR (seconds since SC epoch: 6-Jan-1980 00:00:00) coordinates String delta_time acs_time_subsec /sc/delta_time long_name String ACS time (subsec) units String 100 nanoseconds source String ATL01/sc contentType String referenceInformation description String Subsecond portion of the SC time at the initiation of the ACS task (seconds since SC epoch: 6-Jan-1980 00:00:00) (Same time provided within the Attitude/Rate message to ATLAS in RT at 1Hz) coordinates String delta_time acs_time_sec /sc/delta_time long_name String ACS time (sec) units String seconds source String ATL01/sc contentType String referenceInformation description String SC time at the initiation of the ACS task (seconds since SC epoch: 6-Jan-1980 00:00:00) (Same time provided within the Attitude/Rate message to ATLAS in RT at 1Hz) coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Group contains the Spacecraft (SC) Ancillary Science packet #1 decommutated data data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) ephemeris delta_time 423 delta_time /sc/ephemeris/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String The time tag of the data by using raw_prop_time_sec and subsecs in the L1A ephemeris group, relative to the ATLAS SDP GSP epoch. The ATLAS Standard Data Products (SDP) GPS epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. eci_velocity_res_z /sc/ephemeris/delta_time long_name String SC ECI velocity residual Z units String meters/second source String ATL01/sc1/ephemeris contentType String referenceInformation description String ACS Orbit Determination Filter velocity of Z frame residual. coordinates String delta_time eci_velocity_z /sc/ephemeris/delta_time long_name String SC ECI Velocity Z units String meters/second source String ATL01/sc1/ephemeris converted contentType String referenceInformation description String ACS SC Z velocity in the ECI coordinate frame. (Same data that is provided to ATLAS in RT) coordinates String delta_time eci_position_y /sc/ephemeris/delta_time long_name String SC ECI Position Y units String meters source String ATL01/sc1/ephemeris converted contentType String referenceInformation description String ACS SC Y position in the ECI coordinate frame. (Same data that is provided to ATLAS in RT) coordinates String delta_time eci_velocity_y /sc/ephemeris/delta_time long_name String SC ECI Velocity Y units String meters/second source String ATL01/sc1/ephemeris converted contentType String referenceInformation description String ACS SCY velocity in the ECI coordinate frame. (Same data that is provided to ATLAS in RT) coordinates String delta_time eci_velocity_res_x /sc/ephemeris/delta_time long_name String SC ECI velocity residual X units String meters/second source String ATL01/sc1/ephemeris contentType String referenceInformation description String ACS Orbit Determination Filter velocity of X frame residual. coordinates String delta_time eci_position_res_z /sc/ephemeris/delta_time long_name String SC ECI Position residual Z units String meters source String ATL01/sc1/ephemeris contentType String referenceInformation description String ACS Orbit Determination Filter position of Z frame residual. coordinates String delta_time eci_position_x /sc/ephemeris/delta_time long_name String SC ECI Position X units String meters source String ATL01/sc1/ephemeris converted contentType String referenceInformation description String ACS SC X position in the ECI coordinate frame. (Same data that is provided to ATLAS in RT) coordinates String delta_time eci_velocity_x /sc/ephemeris/delta_time long_name String SC ECI Velocity X units String meters/second source String ATL01/sc1/ephemeris converted contentType String referenceInformation description String ACS SC X velocity in the ECI coordinate frame. (Same data that is provided to ATLAS in RT) coordinates String delta_time eci_velocity_res_y /sc/ephemeris/delta_time long_name String SC ECI velocity residual Y units String meters/second source String ATL01/sc1/ephemeris contentType String referenceInformation description String ACS Orbit Determination Filter velocity of Y frame residual. coordinates String delta_time eci_position_res_y /sc/ephemeris/delta_time long_name String SC ECI Position residualY units String meters source String ATL01/sc1/ephemeris contentType String referenceInformation description String ACS Orbit Determination Filter position of Y frame residual. coordinates String delta_time eci_position_res_x /sc/ephemeris/delta_time long_name String SC ECI Position residual X units String meters source String ATL01/sc1/ephemeris contentType String referenceInformation description String ACS Orbit Determination Filter position of X frame residual. coordinates String delta_time eci_position_z /sc/ephemeris/delta_time long_name String SC ECI Position Z units String meters source String ATL01/sc1/ephemeris converted contentType String referenceInformation description String ACS SC Z position in the ECI coordinate frame. (Same data that is provided to ATLAS in RT) coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters related to spacecraft Ephemeris Propagator. data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) attitude_control_system delta_time 423 delta_time /sc/attitude_control_system/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String The time tag of the data computed from raw_acs_time_sec and subseconds in the L1A Attitude_control_ group, relative to the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. sc_to_lrs_quat_3 /sc/attitude_control_system/delta_time long_name String SC Inertial to LRS Frame Quaternions 3 units String counts source String ATL01/sc1/attitude_control_system and L1B ATBD conversion contentType String referenceInformation description String ACS Spacecraft Inertial frame to Laser Reference System (LRS) reference frame quaternion 3. (Same data provided to ATLAS in RT at 1Hz). coordinates String delta_time sc_to_lrs_quat_4 /sc/attitude_control_system/delta_time long_name String SC Inertial to LRS Frame Quaternions 4 units String counts source String ATL01/sc1/attitude_control_system and L1B ATBD conversion contentType String referenceInformation description String ACS Spacecraft Inertial frame to Laser Reference System (LRS) reference frame quaternion4. (Same data provided to ATLAS in RT at 1Hz). coordinates String delta_time sc_to_lrs_quat_2 /sc/attitude_control_system/delta_time long_name String SC Inertial to LRS Frame Quaternions 2 units String counts source String ATL01/sc1/attitude_control_system and L1B ATBD conversion contentType String referenceInformation description String ACS Spacecraft Inertial frame to Laser Reference System (LRS) reference frame quaternion 2. (Same data provided to ATLAS in RT at 1Hz). coordinates String delta_time sc_body_rate_z /sc/attitude_control_system/delta_time long_name String SC Body Rate (Z) units String radians/second source String ATL01/sc1/attitude_control_system and L1B ATBD conversion contentType String referenceInformation description String ACS Fine Rate Estimate - SC Body Z axis. (Same data provided to ATLAS in RT at 1Hz) coordinates String delta_time acs_mode /sc/attitude_control_system/delta_time long_name String ACS Software Mode units String counts source String ATL01/sc1/attitude_control_system valid_min Byte 0 valid_max Byte 14 contentType String referenceInformation description String ACS Active ACS Software Mode 0 = Idle 1 = Rate Capture 2 = Sun Acquisition 3 = (Reserved - N/A for ICESat-2) 4 = Slew 5 = Inertial Sun Point 6 = Earth Pointing 7 = ACS Calibration 8 = Inertial Pointing 9 = Reference Ground Track (RGT) 10 = Roll Off-Point (ROP) 11 = Instrument Calibration (ICAL) 12 = DV Wheel Standby 13 = DV Thruster Standby 14 = DV Burn coordinates String delta_time flag_meanings String idle rate_capture sun_acquisition reserved slew inertial_sun_point earth_pointing acs_calibration inertial_pointing reference_ground_track roll_off_point instrument_calibration dv_wheel_standby dv_thruster_standby dv_burn flag_values Byte 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 sc_to_lrs_quat_1 /sc/attitude_control_system/delta_time long_name String SC Inertial to LRS Frame Quaternions 1 units String counts source String ATL01/sc1/attitude_control_system and L1B ATBD conversion contentType String referenceInformation description String ACS Spacecraft Inertial frame to Laser Reference System (LRS) reference frame quaternion1. (Same data provided to ATLAS in RT at 1Hz). coordinates String delta_time sc_body_rate_y /sc/attitude_control_system/delta_time long_name String SC Body Rate (Y) units String radians/second source String ATL01/sc1/attitude_control_system and L1B ATBD conversion contentType String referenceInformation description String ACS Fine Rate Estimate - SC Body Y axis. (Same data provided to ATLAS in RT at 1Hz) coordinates String delta_time sc_body_rate_x /sc/attitude_control_system/delta_time long_name String SC Body Rate (X) units String radians/second source String ATL01/sc1/attitude_control_system and L1B ATBD conversion contentType String referenceInformation description String ACS Fine Rate Estimate - SC Body X axis. (Same data provided to ATLAS in RT at 1Hz) coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters related to spacecraft ACS (attitude control system) software. data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) solar_array delta_time 423 delta_time /sc/solar_array/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String SC time at the initiation of the ACS task, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. azimuth_meas_1 /sc/solar_array/delta_time long_name String SADA Azimuth Measured Position (Pot 1) units String degrees source String ATL01/sc1/solar_array valid_min Float32 -100. valid_max Float32 100. contentType String referenceInformation description String Solar Array Drive Assembly (SADA) - Estimated Azimuth angle based on Potentiometer 1 (as reported by ACS software). coordinates String delta_time azimuth_meas_2 /sc/solar_array/delta_time long_name String SADA Azimuth Measured Position (Pot 2) units String degrees source String ATL01/sc1/solar_array valid_min Float32 -100. valid_max Float32 100. contentType String referenceInformation description String Solar Array Drive Assembly (SADA) - Estimated Azimuth angle based on Potentiometer 2 (as reported by ACS software). coordinates String delta_time azimuth_est /sc/solar_array/delta_time long_name String SADA Azimuth Estimated Position units String degrees source String ATL01/sc1/solar_array valid_min Float32 -100. valid_max Float32 100. contentType String referenceInformation description String Solar Array Drive Assembly (SADA) - Estimated Azimuth position used for ACS control coordinates String delta_time elev_meas_1 /sc/solar_array/delta_time units String degrees long_name String SADA Elevation Measured Position (Pot 1) source String ATL01/sc1/solar_array valid_min Float32 -10. valid_max Float32 90. contentType String referenceInformation description String Solar Array Drive Assembly (SADA) - Estimated Elevation angle based on Potentiometer 1 (as reported by ACS software). coordinates String delta_time elev_est /sc/solar_array/delta_time long_name String SADA Elevation Estimated Position units String degrees source String ATL01/sc1/solar_array valid_min Float32 -10. valid_max Float32 90. contentType String referenceInformation description String Solar Array Drive Assembly (SADA) - Estimated Elevation position used for ACS control coordinates String delta_time elev_meas_2 /sc/solar_array/delta_time units String degrees long_name String SADA Elevation Measured Position (Pot 2) source String ATL01/sc1/solar_array valid_min Float32 -10. valid_max Float32 90. contentType String referenceInformation description String Solar Array Drive Assembly (SADA) - Estimated Elevation angle based on Potentiometer 2 (as reported by ACS software). coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters related to solar array driver assembly. data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) star_tracker delta_time 4230 delta_time /sc/star_tracker/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Time of the Star track subaddress 1 data, relative to the ATLAS SDP GPS Epoch and computed from raw_ace_time_sec/subseconds and etr_delay_tm1. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. atm_frame_counter /sc/star_tracker/delta_time long_name String ATM Frame Counter units String counts source String ATL01/sc2/star_tracker contentType String referenceInformation description String Star Tracker Electronics (STE) [ATM TM#1: Subaddress 13] - External Time Reference (ETR) counter - Used to determine measurement time of reported ATM TLM with respect to SC-provided sync pulse; This item increments upon the reception of the SC-provided sync pulse. coordinates String delta_time atm_etr_counter /sc/star_tracker/delta_time long_name String ATM ETR Counter units String counts source String ATL01/sc2/star_tracker contentType String referenceInformation description String Star Tracker Electronics (STE) [ATM TM#1: Subaddress 13] - External Time Reference (ETR) delay ticks - Used to determine measurement time of reported ATM TLM with respect to SC-provided sync pulse; Additional delay of quaternion measurement time in ticks of 20 usec from ETR. coordinates String delta_time etr_counter /sc/star_tracker/delta_time units String counts long_name String STE Star Tracker ETR Counter source String ATL01/sc2/star_tracker contentType String referenceInformation description String Star Tracker Electronics (STE) [Star Tracker Status TM#1: Subaddress 1] - External Time Reference (ETR) counter - Used to determine measurement time of reported STE/OH mode status with respect to SC-provided sync pulse; This item increments upon the reception of the SC-provided sync pulse - Sample 1-10 coordinates String delta_time mode_status /sc/star_tracker/delta_time units String 1 long_name String STE Star Tracker Mode Status source String ATL01/sc2/star_tracker valid_min UInt16 0 valid_max UInt16 15 contentType String referenceInformation description String Star Tracker Electronics (STE) [Star Tracker Status TM#1: Subaddress 1] - Mode Status - Represents the current mode of the STE software . 0 = Initialization 1 = Standby 2 = Memory Read 3 = Memory Write 4 = Self Test 5 = Photo 9 = Angular Rate 10 = Attitude Acquisition 11 = Attitude Tracking 14 = AOM/Attitude Acquisition Phase 15 = AOM/Attitude Tracking Phase All other values invalid coordinates String delta_time flag_meanings String init stby mem_read mem_write self_test photon angular_rate att_acq att_track aom_acq aom_track flag_values UInt16 0 1 2 3 4 5 9 10 11 14 15 DODS_EXTRA Container Unlimited_Dimension String delta_time data_rate String Data within this group are stored at the data rate of the source Star Tracker data within the Spacecraft Ancillary Science Data Packets. (nominally ten per second.) optical_head_1 delta_time 4230 delta_time /sc/star_tracker/optical_head_1/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Elapsed GPS seconds since the ATLAS SDP GPS Epoch, computed from raw_ace_time_sec and subseconds and atm_etr_delay_tm7. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. att_qa_x /sc/star_tracker/optical_head_1/delta_time long_name String STOH Attitude Quality (X) units String arcsec source String ATL01/sc2/star_tracker/optical_head_1 converted contentType String referenceInformation description String Star Tracker Optical Head (STOH) Quality measurement of STOH computed quaternion (X) coordinates String delta_time atm_etr_counter /sc/star_tracker/optical_head_1/delta_time long_name String ATM ETR Counter units String counts source String ATL01/sc2/star_tracker/optical_head_1 contentType String referenceInformation description String Star Tracker Optical Head (STOH) 1 [ATM TM#7: Subaddress 19] - External Time Reference (ETR) counter - Used to determine measurement time of reported quaternions with respect to SC- provided sync pulse; This item increments upon the reception of the SC-provided sync pulse. coordinates String delta_time att_qa_z /sc/star_tracker/optical_head_1/delta_time long_name String STOH Attitude Quality (Z) units String arcsec source String ATL01/sc2/star_tracker/optical_head_1 converted contentType String referenceInformation description String Star Tracker Optical Head (STOH) Quality measurement of STOH computed quaternion (Z) coordinates String delta_time seq_mode_st /sc/star_tracker/optical_head_1/delta_time _FillValue Int8 127 long_name String Sequencing Mode Status units String counts source String ATL01/sc2/star_tracker/optical_head_1 valid_min Int8 0 valid_max Int8 7 contentType String referenceInformation description String Star Tracker Optical Head (STOH) [Star Tracker Status TM#1: Subaddress 1] - Sequencing (Mode) Status coordinates String delta_time flag_meanings String off standby photo acquire track autotest win_acq powered flag_values Int8 0 1 2 3 4 5 6 7 atm_frame_counter /sc/star_tracker/optical_head_1/delta_time long_name String STOH1 ATM Frame Counter units String counts source String ATL01/sc2/star_tracker/optical_head_1 contentType String referenceInformation description String Star Tracker Optical Head (STOH) 1 [ATM TM#7: Subaddress 19] - Frame Counter coordinates String delta_time quaternion3 /sc/star_tracker/optical_head_1/delta_time long_name String STOH1 Quaternion3 units String counts source String ATL01/sc2/star_tracker/optical_head_1 contentType String referenceInformation description String Star Tracker Optical Head (STOH) [ATM TM#7: Subaddress 19] - Attitude quaternion 3 - STOH reference frame to Earth-Centered Inertial (ECI) reference frame coordinates String delta_time att_qa_y /sc/star_tracker/optical_head_1/delta_time long_name String STOH Attitude Quality (Y) units String arcsec source String ATL01/sc2/star_tracker/optical_head_1 converted contentType String referenceInformation description String Star Tracker Optical Head (STOH) Quality measurement of STOH computed quaternion (Y) coordinates String delta_time quaternion1 /sc/star_tracker/optical_head_1/delta_time long_name String STOH1 Quaternion1 units String counts source String ATL01/sc2/star_tracker/optical_head_1 contentType String referenceInformation description String Star Tracker Optical Head (STOH) [ATM TM#7: Subaddress 19] - Attitude quaternion 1 - STOH reference frame to Earth-Centered Inertial (ECI) reference frame coordinates String delta_time quaternion4 /sc/star_tracker/optical_head_1/delta_time long_name String STOH1 Quaternion4 units String counts source String ATL01/sc2/star_tracker/optical_head_1 contentType String referenceInformation description String Star Tracker Optical Head (STOH) [ATM TM#7: Subaddress 19] - Attitude quaternion 4 - STOH reference frame to Earth-Centered Inertial (ECI) reference frame coordinates String delta_time quaternion2 /sc/star_tracker/optical_head_1/delta_time long_name String STOH1 Quaternion2 units String counts source String ATL01/sc2/star_tracker/optical_head_1 contentType String referenceInformation description String Star Tracker Optical Head (STOH) [ATM TM#7: Subaddress 19] - Attitude quaternion 2 - STOH reference frame to Earth-Centered Inertial (ECI) reference frame coordinates String delta_time n_stars /sc/star_tracker/optical_head_1/delta_time _FillValue Int8 127 long_name String STOHx Number of Coherent Stars units String counts source String ATL01/sc2/star_tracker/optical_head_1 contentType String referenceInformation description String Star Tracker Electronics (STE) [ATM TM#1: Subaddress 13] - Number of coherent stars used in STOH attitude calculation. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters related to spacecraft Star Tracker Optical Head 1 (STOH1). data_rate String Data within this group are stored at the data rate of the source Star Tracker data within the Spacecraft Ancillary Science Data Packets. (nominally ten per second.) optical_head_2 delta_time 4230 delta_time /sc/star_tracker/optical_head_2/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String Elapsed GPS seconds from the ATLAS SDP GPS Epoch, computed from raw_ace_time_sec and subseconds and atm_etr_delay_tm8. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. att_qa_x /sc/star_tracker/optical_head_2/delta_time long_name String STOH Attitude Quality (X) units String arcsec source String ATL01/sc2/star_tracker/optical_head_2 contentType String referenceInformation description String Star Tracker Optical Head (STOH) Quality measurement of STOH computed quaternion (X) coordinates String delta_time atm_etr_counter /sc/star_tracker/optical_head_2/delta_time long_name String ATM ETR Counter units String counts source String ATL01/sc2/star_tracker/optical_head_2 contentType String referenceInformation description String Star Tracker Optical Head (STOH) 2 [ATM TM#8: Subaddress 20] - External Time Reference (ETR) counter - Used to determine measurement time of reported quaternions with respect to SC- provided sync pulse; This item increments upon the reception of the SC-provided sync pulse coordinates String delta_time att_qa_z /sc/star_tracker/optical_head_2/delta_time long_name String STOH Attitude Quality (Z) units String arcsec source String ATL01/sc2/star_tracker/optical_head_2 contentType String referenceInformation description String Star Tracker Optical Head (STOH) Quality measurement of STOH computed quaternion (Z) coordinates String delta_time seq_mode_st /sc/star_tracker/optical_head_2/delta_time _FillValue Int8 127 long_name String Sequencing Mode Status units String counts source String ATL01/sc2/star_tracker/optical_head_2 valid_min Int8 0 valid_max Int8 7 contentType String referenceInformation description String Star Tracker Optical Head (STOH) [Star Tracker Status TM#1: Subaddress 1] - Sequencing (Mode) Status. A value of 127 indicates that the data could not be filled from the vc5 packets. coordinates String delta_time flag_meanings String off standby photo acquire track autotest win_acq powered flag_values Int8 0 1 2 3 4 5 6 7 atm_frame_counter /sc/star_tracker/optical_head_2/delta_time long_name String STOH2 ATM Frame Counter units String counts source String ATL01/sc2/star_tracker/optical_head_2 contentType String referenceInformation description String Star Tracker Optical Head (STOH) 2 [ATM TM#8: Subaddress 20] - Frame Counter coordinates String delta_time quaternion3 /sc/star_tracker/optical_head_2/delta_time long_name String STOH1 Quaternion3 units String counts source String ATL01/sc2/star_tracker/optical_head_2 contentType String referenceInformation description String Star Tracker Optical Head (STOH) [ATM TM#7: Subaddress 19] - Attitude quaternion 3 - STOH reference frame to Earth-Centered Inertial (ECI) reference frame coordinates String delta_time att_qa_y /sc/star_tracker/optical_head_2/delta_time long_name String STOH Attitude Quality (Y) units String arcsec source String ATL01/sc2/star_tracker/optical_head_2 contentType String referenceInformation description String Star Tracker Optical Head (STOH) Quality measurement of STOH computed quaternion (Y) coordinates String delta_time quaternion1 /sc/star_tracker/optical_head_2/delta_time long_name String STOH1 Quaternion1 units String counts source String ATL01/sc2/star_tracker/optical_head_2 contentType String referenceInformation description String Star Tracker Optical Head (STOH) [ATM TM#7: Subaddress 19] - Attitude quaternion 1 - STOH reference frame to Earth-Centered Inertial (ECI) reference frame coordinates String delta_time quaternion4 /sc/star_tracker/optical_head_2/delta_time long_name String STOH1 Quaternion4 units String counts source String ATL01/sc2/star_tracker/optical_head_2 contentType String referenceInformation description String Star Tracker Optical Head (STOH) [ATM TM#7: Subaddress 19] - Attitude quaternion 4 - STOH reference frame to Earth-Centered Inertial (ECI) reference frame coordinates String delta_time quaternion2 /sc/star_tracker/optical_head_2/delta_time long_name String STOH1 Quaternion2 units String counts source String ATL01/sc2/star_tracker/optical_head_2 contentType String referenceInformation description String Star Tracker Optical Head (STOH) [ATM TM#7: Subaddress 19] - Attitude quaternion 2 - STOH reference frame to Earth-Centered Inertial (ECI) reference frame coordinates String delta_time n_stars /sc/star_tracker/optical_head_2/delta_time _FillValue Int8 127 long_name String STOHx Number of Coherent Stars units String counts source String ATL01/sc2/star_tracker/optical_head_2 contentType String referenceInformation description String Star Tracker Electronics (STE) [ATM TM#1: Subaddress 13] - Number of coherent stars used in STOH attitude calculation coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters related to spacecraft Star Tracker Optical Head 2 (STOH2). data_rate String Data within this group are stored at the data rate of the source Star Tracker data within the Spacecraft Ancillary Science Data Packets. (nominally ten per second.) inertial_measurement_unit delta_time 21150 delta_time /sc/inertial_measurement_unit/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String IMU delta time tag at the end of the IDL frame over which the integrated gyro angle data was collected, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. sync_event_ttag /sc/inertial_measurement_unit/delta_time long_name String IMU Sync Event Time Tag units String seconds source String ATL01/sc1/inertial_measurement_unit/hi_rate converted contentType String referenceInformation description String IMU Time remaining on the countdown timer which triggers the IDL interrupt (between the event strobe and the timetag of the next IDL data packet). IMU time at the reception of the last IMU time sync pulse. This word contains the time stamp that is recorded when the Event Strobe input to the SSIRU transitions to the active (low) state. coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time Description String Contains parameters related to spacecraft IMU (Inertial Measurement Unit). data_rate String Data within this main group are stored at the data rate of the source IMU within the Spacecraft Ancillary Science Data Packet. (nominally fifty per second.) gyro_a gyro_angle /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Integrated Angle Counter (Gyros A, B, C, D) units String arcseconds source String ATL01/sc1/inertial_measurement_unit/hi_rate converted contentType String referenceInformation description String IMU integrated angle sensed by the SSIRU Gyro. The data word shall increment from 0 to full scale (0xFFFF) and roll over to zero for positive input rates about the Gyro input axis. The data word shall decrement from full scale to 0 and roll over to 0xFFFF for negative input rates about the Gyro input axis. coordinates String ../delta_time gyro_rate_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Rate Valid (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro Integrated Angular Rate data validity status. 0=invalid, 1=valid. coordinates String ../delta_time flag_meanings String invalid valid flag_values Int8 0 1 gyro_sat_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Saturation Bit (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro saturation mode: Force to Rebalance (FTR) Mode (The gyro operates in this mode during low inertial rates) or Whole Angle Saturation (WAS) Mode (The gyro operates in this mode during high inertial rates). coordinates String ../delta_time flag_meanings String ftr_mode was_mode flag_values Int8 0 1 gyro_scal_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Scaling Factor (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro scale factor mode: low scaling factor mode with the corresponding Integrated Angle word being 0.05 arc-sec/LSB or high scaling factor with the corresponding Integrated Angle word being 1.6 arc-sec/LSB. coordinates String ../delta_time flag_meanings String low_scale_factor high_scale_factor flag_values Int8 0 1 Description String Contains parameters related to spacecraft IMU (Inertial Measurement Unit) gyros. data_rate String Data within this main group are stored at the data rate of the source IMU high_rate data within the Spacecraft Ancillary Science Data Packet. (nominally fifty per second.) gyro_b gyro_angle /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Integrated Angle Counter (Gyros A, B, C, D) units String arcseconds source String ATL01/sc1/inertial_measurement_unit/hi_rate converted contentType String referenceInformation description String IMU integrated angle sensed by the SSIRU Gyro. The data word shall increment from 0 to full scale (0xFFFF) and roll over to zero for positive input rates about the Gyro input axis. The data word shall decrement from full scale to 0 and roll over to 0xFFFF for negative input rates about the Gyro input axis. coordinates String ../delta_time gyro_rate_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Rate Valid (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro Integrated Angular Rate data validity status. 0=invalid, 1=valid. coordinates String ../delta_time flag_meanings String invalid valid flag_values Int8 0 1 gyro_sat_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Saturation Bit (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro saturation mode: Force to Rebalance (FTR) Mode (The gyro operates in this mode during low inertial rates) or Whole Angle Saturation (WAS) Mode (The gyro operates in this mode during high inertial rates). coordinates String ../delta_time flag_meanings String ftr_mode was_mode flag_values Int8 0 1 gyro_scal_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Scaling Factor (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro scale factor mode: low scaling factor mode with the corresponding Integrated Angle word being 0.05 arc-sec/LSB or high scaling factor with the corresponding Integrated Angle word being 1.6 arc-sec/LSB. coordinates String ../delta_time flag_meanings String low_scale_factor high_scale_factor flag_values Int8 0 1 Description String Contains parameters related to spacecraft IMU (Inertial Measurement Unit) gyros. data_rate String Data within this main group are stored at the data rate of the source IMU high_rate data within the Spacecraft Ancillary Science Data Packet. (nominally fifty per second.) gyro_c gyro_angle /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Integrated Angle Counter (Gyros A, B, C, D) units String arcseconds source String ATL01/sc1/inertial_measurement_unit/hi_rate converted contentType String referenceInformation description String IMU integrated angle sensed by the SSIRU Gyro. The data word shall increment from 0 to full scale (0xFFFF) and roll over to zero for positive input rates about the Gyro input axis. The data word shall decrement from full scale to 0 and roll over to 0xFFFF for negative input rates about the Gyro input axis. coordinates String ../delta_time gyro_rate_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Rate Valid (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro Integrated Angular Rate data validity status. 0=invalid, 1=valid. coordinates String ../delta_time flag_meanings String invalid valid flag_values Int8 0 1 gyro_sat_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Saturation Bit (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro saturation mode: Force to Rebalance (FTR) Mode (The gyro operates in this mode during low inertial rates) or Whole Angle Saturation (WAS) Mode (The gyro operates in this mode during high inertial rates). coordinates String ../delta_time flag_meanings String ftr_mode was_mode flag_values Int8 0 1 gyro_scal_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Scaling Factor (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro scale factor mode: low scaling factor mode with the corresponding Integrated Angle word being 0.05 arc-sec/LSB or high scaling factor with the corresponding Integrated Angle word being 1.6 arc-sec/LSB. coordinates String ../delta_time flag_meanings String low_scale_factor high_scale_factor flag_values Int8 0 1 Description String Contains parameters related to spacecraft IMU (Inertial Measurement Unit) gyros. data_rate String Data within this main group are stored at the data rate of the source IMU high_rate data within the Spacecraft Ancillary Science Data Packet. (nominally fifty per second.) gyro_d gyro_angle /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Integrated Angle Counter (Gyros A, B, C, D) units String arcseconds source String ATL01/sc1/inertial_measurement_unit/hi_rate converted contentType String referenceInformation description String IMU integrated angle sensed by the SSIRU Gyro. The data word shall increment from 0 to full scale (0xFFFF) and roll over to zero for positive input rates about the Gyro input axis. The data word shall decrement from full scale to 0 and roll over to 0xFFFF for negative input rates about the Gyro input axis. coordinates String ../delta_time gyro_rate_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Rate Valid (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro Integrated Angular Rate data validity status. 0=invalid, 1=valid. coordinates String ../delta_time flag_meanings String invalid valid flag_values Int8 0 1 gyro_sat_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Saturation Bit (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro saturation mode: Force to Rebalance (FTR) Mode (The gyro operates in this mode during low inertial rates) or Whole Angle Saturation (WAS) Mode (The gyro operates in this mode during high inertial rates). coordinates String ../delta_time flag_meanings String ftr_mode was_mode flag_values Int8 0 1 gyro_scal_f /sc/inertial_measurement_unit/delta_time long_name String IMU Gyro Scaling Factor (Gyros A, B, C, D) units String 1 source String ATL01/sc1/inertial_measurement_unit/hi_rate valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String IMU Gyro scale factor mode: low scaling factor mode with the corresponding Integrated Angle word being 0.05 arc-sec/LSB or high scaling factor with the corresponding Integrated Angle word being 1.6 arc-sec/LSB. coordinates String ../delta_time flag_meanings String low_scale_factor high_scale_factor flag_values Int8 0 1 Description String Contains parameters related to spacecraft IMU (Inertial Measurement Unit) gyros. data_rate String Data within this main group are stored at the data rate of the source IMU high_rate data within the Spacecraft Ancillary Science Data Packet. (nominally fifty per second.) hk delta_time 423 ds_ab_index 2 ds_flexure_index 3 ds_temp_index 15 ds_ab_index /sc/hk/ds_ab_index long_name String Dimension scale for Side A or B units String 1 source String Dimension Scale contentType String referenceInformation description String Dimension scale for Side A or B flag_meanings String side_a side_b flag_values Int8 1 2 ds_flexure_index /sc/hk/ds_flexure_index long_name String Dimension scale for flexure thermistors units String 1 source String Dimension Scale contentType String referenceInformation description String Dimension scale for flexure thermistor temperatures. delta_time /sc/hk/delta_time long_name String Elapsed GPS seconds standard_name String time units String seconds since 2018-01-01 source String Derived via Time Tagging contentType String referenceInformation description String The derived time tag of the data, relative to the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. ds_temp_index /sc/hk/ds_temp_index long_name String Dimension scale for ATLAS Temperatures units String 1 source String Dimension Scale contentType String referenceInformation description String Dimension scale for ATLAS temperatures. at_heater_4_sw /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Switch Status - Survival Heater 4 (Sides A, B) units String 1 source String ATL01/sc1/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String ATLAS Survival Heater 4 power feed status measured by the SC PDU (Sides A, B) coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 at_det_p /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Currents - Detector Power (Sides A, B) units String amps source String ATL01/sc1/hk converted contentType String referenceInformation description String ATLAS Detector power feed current measured by the SC PDU (7.5A; Sides A, B) coordinates String delta_time sa_1_in_bk_t /sc/hk/delta_time long_name String Solar Array Panel 1 (Inboard) Back-Side Temperature units String degreesC source String ATL01/sc1/hk converted contentType String referenceInformation description String SC Monitored Temperature of the Back-Side of Solar Panel 1 (Inboard Panel) coordinates String delta_time sa_4_ot_bk_t /sc/hk/delta_time long_name String Solar Array Panel 4 (Outboard) Back- Side Temperature units String degreesC source String ATL01/sc1/hk converted contentType String referenceInformation description String SC Monitored Temperature of the Back-Side of Solar Panel 4 (Outboard Panel) coordinates String delta_time at_heater_2_c /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Currents - Survival Heater 2 (Sides A, B) units String amps source String ATL01/sc1/hk converted contentType String referenceInformation description String ATLAS Survival Heater 2 power feed current measured by the SC PDU (10A; Sides A, B) coordinates String delta_time at_lhp_sdhtr_sw /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Switch Status - LHP Shutdown HTR (Sides A, B) units String 1 source String ATL01/sc1/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String ATLAS LHP Shutdown Heater power feed status measured by the SC PDU (Sides A, B) coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 at_heater_1_sw /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Switch Status - Survival Heater 1 (Sides A, B) units String 1 source String ATL01/sc1/hk contentType String referenceInformation description String ATLAS Survival Heater 1 power feed status measured by the SC PDU (Sides A, B) coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 at_det_sw /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Switch Status - Detector (Sides A, B) units String 1 source String ATL01/sc1/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String ATLAS Detector power feed status measured by the SC PDU (Sides A, B) coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 at_laser_a_c /sc/hk/delta_time long_name String ATLAS Currents - Laser A units String amps source String ATL01/sc1/hk converted contentType String referenceInformation description String ATLAS Laser A power feed current measured by the SC PDU (20A) coordinates String delta_time sa_1_in_cell_t /sc/hk/delta_time long_name String Solar Array Panel 1 (Inboard) Cell-Side Temp units String degreesC source String ATL01/sc1/hk converted contentType String referenceInformation description String SC Monitored Temperature of the Cell-Side of Solar Panel 1 (Inboard Panel) coordinates String delta_time at_heater_3_sw /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Switch Status - Survival Heater 3 (Sides A, B) units String 1 source String ATL01/sc1/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String ATLAS Survival Heater 3 power feed status measured by the SC PDU (Sides A, B) coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 sa_4_ot_cell_t /sc/hk/delta_time long_name String Solar Array Panel 4 (Outboard) Cell- Side Temperature units String degreesC source String ATL01/sc1/hk converted contentType String referenceInformation description String SC Monitored Temperature of the Cell-Side of Solar Panel 4 (Outboard Panel) coordinates String delta_time sc_e_bus_v /sc/hk/delta_time /sc/hk/ds_ab_index long_name String SC Essential Bus Voltage (Sides A, B) units String volts source String ATL01/sc1/hk converted contentType String referenceInformation description String SC Essential Bus Voltage measured by the SC PDU. (Sides A, B) coordinates String delta_time at_laser_sw /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Switch Status - Laser (Sides A, B) units String 1 source String ATL01/sc1/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String ATLAS Laser power feed status measured by the SC PDU (Sides A, B) coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 at_lhp_sdhtr_c /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Currents - LHP Shutdown HTR (Sides A, B) units String amps source String ATL01/sc1/hk converted contentType String referenceInformation description String ATLAS Loop Heat Pipe Shutdown power feed current measured by the SC PDU (7.5A; Sides A, B) coordinates String delta_time at_main_sw /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Switch Status - Main (Sides A, B) units String 1 source String ATL01/sc1/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String ATLAS Main power feed status measured by the SC PDU (Sides A, B) coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 at_heater_2_sw /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Switch Status - Survival Heater 2 (Sides A, B) units String 1 source String ATL01/sc1/hk valid_min Int8 0 valid_max Int8 1 contentType String referenceInformation description String ATLAS Survival Heater 2 power feed status measured by the SC PDU (Sides A, B) coordinates String delta_time flag_meanings String on off flag_values Int8 0 1 at_heater_1_c /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Currents - Survival Heater 1 (Sides A, B) units String amps source String ATL01/sc1/hk converted contentType String referenceInformation description String ATLAS Survival Heater 1 power feed current measured by the SC PDU (10A; Sides A, B) coordinates String delta_time at_heater_4_c /sc/hk/delta_time /sc/hk/ds_ab_index units String amps long_name String ATLAS Currents - Survival Heater 4 (Sides A, B) source String ATL01/sc1/hk converted contentType String referenceInformation description String ATLAS Survival Heater 4 power feed current measured by the SC PDU (10A; Sides A, B) coordinates String delta_time sc_at_flex_t /sc/hk/delta_time /sc/hk/ds_flexure_index long_name String SC-to-ATLAS Flexure Temperature units String degreesC source String ATL01/sc1/hk converted contentType String referenceInformation description String SC Monitored Temperature of Mechanical I/F Flexure 1, 2 and 3 coordinates String delta_time at_heater_3_c /sc/hk/delta_time /sc/hk/ds_ab_index units String amps long_name String ATLAS Currents - Survival Heater 3 (Sides A, B) source String ATL01/sc1/hk converted contentType String referenceInformation description String ATLAS Survival Heater 3 power feed current measured by the SC PDU (10A; Sides A, B) coordinates String delta_time at_t /sc/hk/delta_time /sc/hk/ds_temp_index long_name String ATLAS Temperatures (1-15) units String degreesC source String ATL01/sc1/hk converted contentType String referenceInformation description String SC Monitored ATLAS Temperatures (1 to 15) coordinates String delta_time at_main_c /sc/hk/delta_time /sc/hk/ds_ab_index long_name String ATLAS Currents - ATLAS Main (Sides A, B) units String amps source String ATL01/sc1/hk converted contentType String referenceInformation description String ATLAS Main power feed current measured by the SC PDU (20A; Sides A, B) coordinates String delta_time DODS_EXTRA Container Unlimited_Dimension String delta_time ds_ab_index ds_flexure_index ds_temp_index Description String Contains parameters related to spacecraft housekeeping data. data_rate String Data within this group are stored at the data rate of the source Spacecraft Ancillary Science Data Packets. (nominally one per second.) 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NASA National Snow and Ice Data Center Distributed Active Archive Center</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo> <gmd:CI_Contact id="NSIDC_DAAC_CONTACT_ID"> <gmd:phone> <gmd:CI_Telephone> <gmd:voice> <gco:CharacterString>303-492-6199</gco:CharacterString> </gmd:voice> <gmd:facsimile> <gco:CharacterString>303-492-2468</gco:CharacterString> </gmd:facsimile> </gmd:CI_Telephone> </gmd:phone> <gmd:address> <gmd:CI_Address> <gmd:deliveryPoint> <gco:CharacterString>1540 30th St Campus Box 449</gco:CharacterString> </gmd:deliveryPoint> <gmd:city> <gco:CharacterString>Boulder</gco:CharacterString> </gmd:city> <gmd:administrativeArea> <gco:CharacterString>Colorado</gco:CharacterString> </gmd:administrativeArea> <gmd:postalCode> <gco:CharacterString>80309-0449</gco:CharacterString> </gmd:postalCode> <gmd:country> <gco:CharacterString>USA</gco:CharacterString> </gmd:country> <gmd:electronicMailAddress> <gco:CharacterString>nsidc@nsidc.org</gco:CharacterString> </gmd:electronicMailAddress> </gmd:CI_Address> </gmd:address> <gmd:onlineResource> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://nsidc.org/daac/</gmd:URL> </gmd:linkage> </gmd:CI_OnlineResource> </gmd:onlineResource> <gmd:hoursOfService> <gco:CharacterString>9:00 A.M. to 5:00 P.M., U.S. Mountain Time, Monday through Friday, excluding U.S. holidays.</gco:CharacterString> </gmd:hoursOfService> <gmd:contactInstructions> <gco:CharacterString>Contact by e-mail first</gco:CharacterString> </gmd:contactInstructions> </gmd:CI_Contact> </gmd:contactInfo> <gmd:role> <gmd:CI_RoleCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact">pointOfContact</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:contact> <gmd:dateStamp> <gco:Date>2015-10-15</gco:Date> </gmd:dateStamp> <gmd:metadataStandardName> <gco:CharacterString>ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for imagery and gridded data</gco:CharacterString> </gmd:metadataStandardName> <gmd:metadataStandardVersion> <gco:CharacterString>ISO 19115-2:2009(E)</gco:CharacterString> </gmd:metadataStandardVersion> <gmd:identificationInfo> <gmd:MD_DataIdentification> <gmd:citation> <gmd:CI_Citation> <!-- ECS extracts the LongName from here --> <!-- UMM-C expects the ShortName to precede the LongName separated by a &gt; here --> <gmd:title> <gco:CharacterString>ATLAS/ICESat-2 L1B Converted Telemetry Data</gco:CharacterString> </gmd:title> <gmd:date> <gmd:CI_Date> <!-- ECS extracts the RevisionDate from here --> <gmd:date> <gco:Date>2022-08-09</gco:Date> </gmd:date> <gmd:dateType> <gmd:CI_DateTypeCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="revision">revision</gmd:CI_DateTypeCode> </gmd:dateType> </gmd:CI_Date> </gmd:date> <!-- VersionID is expected to be here by the Base Reference Metadata Model document --> <gmd:edition> <gco:CharacterString>006</gco:CharacterString> </gmd:edition> <gmd:identifier> <gmd:MD_Identifier> <!-- ECS extracts the ShortName from here --> <gmd:code> <gco:CharacterString>ATL02</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>The ECS Short Name</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmd:identifier> <gmd:identifier> <gmd:MD_Identifier> <!-- ECS extracts the VersionID from here --> <gmd:code> <gco:CharacterString>006</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>The ECS Version ID</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmd:identifier> <gmd:identifier> <gmd:MD_Identifier> <!-- This field provides the Digital Object Identifier (DOI). --> <gmd:code> <gmx:Anchor xlink:actuate="onRequest" xlink:href="http://dx.doi.org/10.5067/ATLAS/ATL02.006">doi:10.5067/ATLAS/ATL02.006</gmx:Anchor> </gmd:code> <gmd:codeSpace> <gco:CharacterString>gov.nasa.esdis</gco:CharacterString> </gmd:codeSpace> <gmd:description> <gco:CharacterString>A Digital Object Identifier (DOI)</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmd:identifier> <gmd:citedResponsibleParty> <gmd:CI_ResponsibleParty> <gmd:organisationName> <gco:CharacterString>National Aeronautics and Space Administration (NASA)</gco:CharacterString> </gmd:organisationName> <gmd:role> <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="resourceProvider">resourceProvider</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:citedResponsibleParty> <gmd:citedResponsibleParty> <gmd:CI_ResponsibleParty> <!-- ECS expects ProcessingCenter to be here --> <gmd:organisationName> <gco:CharacterString>GSFC I-SIPS &gt; ICESat-2 Science Investigator-led Processing System</gco:CharacterString> </gmd:organisationName> <gmd:role> <gmd:CI_RoleCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="originator">originator</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:citedResponsibleParty> <!-- ECS extracts the VersionDescription from here --> <gmd:otherCitationDetails> <gco:CharacterString>Initial version of the processing software</gco:CharacterString> </gmd:otherCitationDetails> </gmd:CI_Citation> </gmd:citation> <!-- ECS extracts the CollectionDescription from here --> <gmd:abstract> <gco:CharacterString>ATL02 Science unit converted time ordered telemetry calibrated for instrument effects. All photon events per beam per shot. Includes atmosphere raw profiles, housekeeping data, engineering data, s/c position, and pointing data.</gco:CharacterString> </gmd:abstract> <gmd:purpose> <gco:CharacterString>The purpose of ATL02 is to provide science-unit, calibrated data for upstream processing. Data converted from raw counts to science units, calibrated for instrument effects and precisely time-tagged. ATL02 provides the position and pointing data needed to precisely geolocate each photon. ATL02 is of limited use to the science community.</gco:CharacterString> </gmd:purpose> <gmd:credit> <gco:CharacterString>The software that generates the ATL02 product was designed and implemented at the NASA Wallops Flight Facility in Wallops Island, Virginia.</gco:CharacterString> </gmd:credit> <gmd:status> <gmd:MD_ProgressCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ProgressCode" codeListValue="onGoing">onGoing</gmd:MD_ProgressCode> </gmd:status> <gmd:pointOfContact> <gmd:CI_ResponsibleParty> <!-- ECS expects ArchiveCenter to be here --> <gmd:organisationName> <gco:CharacterString>NSIDC DAAC &gt; NASA National Snow and Ice Data Center Distributed Active Archive Center</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo xlink:href="#NSIDC_DAAC_CONTACT_ID"/> <gmd:role> <gmd:CI_RoleCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="distributor">distributor</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:pointOfContact> <gmd:resourceFormat> <gmd:MD_Format> <gmd:name> <gco:CharacterString>HDF</gco:CharacterString> </gmd:name> <gmd:version> <gco:CharacterString>5</gco:CharacterString> </gmd:version> </gmd:MD_Format> </gmd:resourceFormat> <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword> <gco:CharacterString>EARTH SCIENCE &gt; SPECTRAL/ENGINEERING &gt; INFRARED WAVELENGTHS &gt; SENSOR COUNTS &gt; NONE &gt; NONE &gt; Photons</gco:CharacterString> </gmd:keyword> <gmd:type> <gmd:MD_KeywordTypeCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode> </gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>NASA/GCMD Science Keywords</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason="unknown"/> <gmd:citedResponsibleParty> <gmd:CI_ResponsibleParty id="GCMD_USO_ID"> <gmd:organisationName> <gco:CharacterString>NASA Global Change Master Directory (GCMD) User Support Office</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo> <gmd:CI_Contact> <gmd:phone gco:nilReason="missing"/> <gmd:address> <gmd:CI_Address> <gmd:deliveryPoint> <gco:CharacterString>NASA Global Change Master Directory, Goddard Space Flight Center</gco:CharacterString> </gmd:deliveryPoint> <gmd:city> <gco:CharacterString>Greenbelt</gco:CharacterString> </gmd:city> <gmd:administrativeArea> <gco:CharacterString>MD</gco:CharacterString> </gmd:administrativeArea> <gmd:postalCode> <gco:CharacterString>20771</gco:CharacterString> </gmd:postalCode> <gmd:country> <gco:CharacterString>USA</gco:CharacterString> </gmd:country> <gmd:electronicMailAddress> <gco:CharacterString>gcmduso@gcmd.gsfc.nasa.gov</gco:CharacterString> </gmd:electronicMailAddress> </gmd:CI_Address> </gmd:address> <gmd:onlineResource> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://gcmd.nasa.gov/</gmd:URL> </gmd:linkage> <gmd:protocol> <gco:CharacterString>http</gco:CharacterString> </gmd:protocol> <gmd:applicationProfile> <gco:CharacterString>web browser</gco:CharacterString> </gmd:applicationProfile> <gmd:name> <gco:CharacterString>NASA Global Change Master Directory (GCMD)</gco:CharacterString> </gmd:name> <gmd:description> <gco:CharacterString>Home Page</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode> </gmd:function> </gmd:CI_OnlineResource> </gmd:onlineResource> <gmd:contactInstructions> <gco:CharacterString>http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso</gco:CharacterString> </gmd:contactInstructions> </gmd:CI_Contact> </gmd:contactInfo> <gmd:role> <gmd:CI_RoleCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:citedResponsibleParty> <gmd:citedResponsibleParty> <gmd:CI_ResponsibleParty id="GCMD_KEYWORDS_ID"> <gmd:organisationName> <gco:CharacterString>Global Change Master Directory (GCMD)</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo> <gmd:CI_Contact> <gmd:phone gco:nilReason="missing"/> <gmd:address> <gmd:CI_Address> <gmd:deliveryPoint> <gco:CharacterString>NASA Global Change Master Directory, Goddard Space Flight Center</gco:CharacterString> </gmd:deliveryPoint> <gmd:city> <gco:CharacterString>Greenbelt</gco:CharacterString> </gmd:city> <gmd:administrativeArea> <gco:CharacterString>MD</gco:CharacterString> </gmd:administrativeArea> <gmd:postalCode> <gco:CharacterString>20771</gco:CharacterString> </gmd:postalCode> <gmd:country> <gco:CharacterString>USA</gco:CharacterString> </gmd:country> <gmd:electronicMailAddress> <gco:CharacterString>gcmduso@gcmd.gsfc.nasa.gov</gco:CharacterString> </gmd:electronicMailAddress> </gmd:CI_Address> </gmd:address> <gmd:onlineResource> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://gcmd.nasa.gov/Resources/valids/</gmd:URL> </gmd:linkage> <gmd:protocol> <gco:CharacterString>http</gco:CharacterString> </gmd:protocol> <gmd:applicationProfile> <gco:CharacterString>web browser</gco:CharacterString> </gmd:applicationProfile> <gmd:name> <gco:CharacterString>NASA Global Change Master Directory (GCMD) Keyword Page</gco:CharacterString> </gmd:name> <gmd:description> <gco:CharacterString>This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode> </gmd:function> </gmd:CI_OnlineResource> </gmd:onlineResource> <gmd:contactInstructions> <gco:CharacterString>http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso</gco:CharacterString> </gmd:contactInstructions> </gmd:CI_Contact> </gmd:contactInfo> <gmd:role> <gmd:CI_RoleCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:citedResponsibleParty> </gmd:CI_Citation> </gmd:thesaurusName> </gmd:MD_Keywords> </gmd:descriptiveKeywords> <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword> <gco:CharacterString>GEOGRAPHIC REGION &gt; GLOBAL</gco:CharacterString> </gmd:keyword> <gmd:type> <gmd:MD_KeywordTypeCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="place">place</gmd:MD_KeywordTypeCode> </gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>NASA/GCMD Location Keywords</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason="unknown"/> <gmd:citedResponsibleParty xlink:href="#GCMD_USO_ID"/> <gmd:citedResponsibleParty xlink:href="#GCMD_KEYWORDS_ID"/> </gmd:CI_Citation> </gmd:thesaurusName> </gmd:MD_Keywords> </gmd:descriptiveKeywords> <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword> <gco:CharacterString>NASA/NSIDC_DAAC &gt; NASA National Snow and Ice Data Center Distributed Active Archive Center</gco:CharacterString> </gmd:keyword> <gmd:type> <gmd:MD_KeywordTypeCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="dataCenter">dataCenter</gmd:MD_KeywordTypeCode> </gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>NASA/GCMD Data Center Keywords</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason="unknown"/> <gmd:citedResponsibleParty xlink:href="#GCMD_USO_ID"/> <gmd:citedResponsibleParty xlink:href="#GCMD_KEYWORDS_ID"/> </gmd:CI_Citation> </gmd:thesaurusName> </gmd:MD_Keywords> </gmd:descriptiveKeywords> <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword> <gco:CharacterString>Earth Observation Satellites &gt; NASA Decadal Survey &gt; ICESAT-2 &gt; Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmd:keyword> <gmd:type> <gmd:MD_KeywordTypeCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="platform">platform</gmd:MD_KeywordTypeCode> </gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>NASA/GCMD Platform Keywords</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason="unknown"/> <gmd:citedResponsibleParty xlink:href="#GCMD_USO_ID"/> <gmd:citedResponsibleParty xlink:href="#GCMD_KEYWORDS_ID"/> </gmd:CI_Citation> </gmd:thesaurusName> </gmd:MD_Keywords> </gmd:descriptiveKeywords> <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword> <gco:CharacterString>Earth Remote Sensing Instruments &gt; Active Remote Sensing &gt; Altimeters &gt; Lidar/Laser Altimeters &gt; ATLAS &gt; Advanced Topographic Laser Altimeter System</gco:CharacterString> </gmd:keyword> <gmd:type> <gmd:MD_KeywordTypeCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="instrument">instrument</gmd:MD_KeywordTypeCode> </gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>NASA/GCMD Instrument Keywords</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason="unknown"/> <gmd:citedResponsibleParty xlink:href="#GCMD_USO_ID"/> <gmd:citedResponsibleParty xlink:href="#GCMD_KEYWORDS_ID"/> </gmd:CI_Citation> </gmd:thesaurusName> </gmd:MD_Keywords> </gmd:descriptiveKeywords> <gmd:resourceConstraints> <gmd:MD_Constraints> <gmd:useLimitation> <gco:CharacterString>Cite these data in publications as follows: The data used in this study were produced by the ICESat-2 Science Project Office at NASA/GSFC. 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NASA National Snow and Ice Data Center Distributed Active Archive Center</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo xlink:href="#NSIDC_DAAC_CONTACT_ID"/> <gmd:role> <gmd:CI_RoleCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="distributor">distributor</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:distributorContact> <gmd:distributorTransferOptions> <gmd:MD_DigitalTransferOptions> <gmd:onLine> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://nsidc.org/data/icesat2/data.html</gmd:URL> </gmd:linkage> <gmd:protocol> <gco:CharacterString>http</gco:CharacterString> </gmd:protocol> <gmd:description> <gco:CharacterString>Data Product Description Page</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode> </gmd:function> </gmd:CI_OnlineResource> </gmd:onLine> <gmd:onLine> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://nsidc.org/data/icesat2/order.html</gmd:URL> </gmd:linkage> <gmd:protocol> <gco:CharacterString>http</gco:CharacterString> </gmd:protocol> <gmd:description> <gco:CharacterString>Data Product Order Page</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="order">order</gmd:CI_OnLineFunctionCode> </gmd:function> </gmd:CI_OnlineResource> </gmd:onLine> <gmd:onLine> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://dx.doi.org/10.5067/ATLAS/ATL02.006</gmd:URL> </gmd:linkage> <gmd:protocol> <gco:CharacterString>http</gco:CharacterString> </gmd:protocol> <gmd:description> <gco:CharacterString>Digital Object Identifier URL</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode> </gmd:function> </gmd:CI_OnlineResource> </gmd:onLine> </gmd:MD_DigitalTransferOptions> </gmd:distributorTransferOptions> </gmd:MD_Distributor> </gmd:distributor> </gmd:MD_Distribution> </gmd:distributionInfo> <gmi:acquisitionInformation> <gmi:MI_AcquisitionInformation> <gmi:instrument> <eos:EOS_Instrument id="ATLAS_INSTRUMENT_ID"> <gmi:citation> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>ATLAS &gt; Advanced Topographic Laser Altimeter System</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason="unknown"/> </gmd:CI_Citation> </gmi:citation> <gmi:identifier> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>ATLAS</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>Advanced Topographic Laser Altimeter System</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmi:identifier> <gmi:type> <gco:CharacterString>Laser Altimeter</gco:CharacterString> </gmi:type> <gmi:description> <gco:CharacterString>ATLAS on ICESat-2 determines the range between the satellite and the Earth's surface by measuring the two-way time delay of short pulses of laser light that it transmits in six beams. It is different from previous operational ice-sheet altimeters in that it is a photon-counting LIDAR. ATLAS records a set of arrival times for individual photons, which are then analyzed to derive surface, vegetation, and cloud properties. ATLAS has six beams arranged in three pairs, so that it samples each of three reference pair tracks with a pair of beams; ATLAS transmits pulses at 10 kHz, giving approximately one pulse every 0.7 m along track; ATLAS's expected pointing control will be better than 90 m RMS.</gco:CharacterString> </gmi:description> <gmi:mountedOn xlink:href="#ICESAT_2_PLATFORM_ID"/> </eos:EOS_Instrument> </gmi:instrument> <gmi:operation> <!-- MI_Operation is expected to be here by the Base Reference Metadata Model document--> <gmi:MI_Operation> <gmi:description> <gco:CharacterString>ICESat-2 &gt; Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmi:description> <gmi:citation> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>ICESat-2 &gt; Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason="unknown"/> </gmd:CI_Citation> </gmi:citation> <gmi:identifier> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>ICESat-2</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmi:identifier> <gmi:status> <gmd:MD_ProgressCode codeList="http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_ProgressCode" codeListValue="underDevelopment">underDevelopment</gmd:MD_ProgressCode> </gmi:status> <gmi:parentOperation gco:nilReason="inapplicable"/> <gmi:platform xlink:href="#ICESAT_2_PLATFORM_ID"/> </gmi:MI_Operation> </gmi:operation> <gmi:platform> <eos:EOS_Platform id="ICESAT_2_PLATFORM_ID"> <gmi:citation> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>ICESat-2 &gt; Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason="unknown"/> </gmd:CI_Citation> </gmi:citation> <gmi:identifier> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>ICESat-2</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmi:identifier> <gmi:description> <gco:CharacterString>Spacecraft</gco:CharacterString> </gmi:description> <gmi:instrument xlink:href="#ATLAS_INSTRUMENT_ID"/> </eos:EOS_Platform> </gmi:platform> </gmi:MI_AcquisitionInformation> </gmi:acquisitionInformation> </gmi:MI_Metadata> </gmd:seriesMetadata> </gmd:DS_Series> AcquisitionInformation lidar pulse_rate String 10000 pps wavelength String 532 nm identifier String ATLAS type String Laser Altimeter description String ATLAS on ICESat-2 determines the range between the satellite and the Earth's surface by measuring the two-way time delay of short pulses of laser light that it transmits in six beams. It is different from previous operational ice-sheet altimeters in that it is a photon-counting LIDAR. ATLAS records a set of arrival times for individual photons, which are then analyzed to derive surface, vegetation, and cloud properties. ATLAS has six beams arranged in three pairs, so that it samples each of three reference pair tracks with a pair of beams; ATLAS transmits pulses at 10 kHz, giving approximately one pulse every 0.7 m along track; ATLAS's expected pointing control will be better than 90 m RMS. lidarDocument edition String Pre-Release publicationDate String 12/31/17 title String A document describing the ATLAS instrument will be provided by the ICESat-2 Project Science Office. platform identifier String ICESat-2 description String Ice, Cloud, and land Elevation Satellite-2 type String Spacecraft platformDocument edition String 31-Dec-16 publicationDate String 31-Dec-16 title String The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2): Science requirements, concept, and implementation. Thorsten Markus, Tom Neumann, Anthony Martino, Waleed Abdalati, Kelly Brunt, Beata Csatho, Sinead Farrell, Helen Fricker, Alex Gardner, David Harding, Michael Jasinski, Ron Kwok, Lori Magruder, Dan Lubin, Scott Luthcke, James Morison, Ross Nelson, Amy Neuenschwander, Stephen Palm, Sorin Popescu, CK Shum, Bob E. Schutz, Benjamin Smith, Yuekui Yang, Jay Zwally. http://dx.doi.org/10.1016/j.rse.2016.12.029 DataQuality scope String NOT_SET CompletenessOmission evaluationMethodType String directInternal measureDescription String TBD nameOfMeasure String TBD unitofMeasure String TBD value String NOT_SET DomainConsistency evaluationMethodType String directInternal measureDescription String TBD nameOfMeasure String TBD unitofMeasure String TBD value String NOT_SET ProductSpecificationDocument ShortName String ATL02_SDP characterSet String utf8 edition String v4.3 language String eng publicationDate String Feb 2020 title String ICESat-2-SIPS-SPEC-4257 - ATLAS Science Algorithm Standard Data Product (SDP) Volume 2 (ATL02) SeriesIdentification maintenanceAndUpdateFrequency String asNeeded maintenanceDate String SET_BY_META VersionID String 006 language String eng characterSet String utf8 pointOfContact String NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center longName String ATLAS/ICESat-2 L1B Converted Telemetry Data shortName String ATL02 identifier_product_DOI String doi:10.5067/ATLAS/ATL02.006 revisionDate String 2022-08-09 resourceProviderOrganizationName String National Aeronautics and Space Administration (NASA) abstract String ATL02 Science unit converted time ordered telemetry calibrated for instrument effects. All photon events per beam per shot. Includes atmosphere raw profiles, housekeeping data, engineering data, s/c position, and pointing data. purpose String The purpose of ATL02 is to provide science-unit, calibrated data for upstream processing. Data converted from raw counts to science units, calibrated for instrument effects and precisely time-tagged. ATL02 provides the position and pointing data needed to precisely geolocate each photon. ATL02 is of limited use to the science community. credit String The software that generates the ATL02 product was designed and implemented at the NASA Wallops Flight Facility in Wallops Island, Virginia. status String onGoing format String HDF formatVersion String 5 topicCategory String geoscientificInformation mission String ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 DatasetIdentification spatialRepresentationType String along-track creationDate String 2023-01-03T18:15:50.000000Z uuid String 8add2519-6f47-352b-95c1-dd0a36c20c52 fileName String ATL02_20221231235632_01741814_006_01.h5 VersionID String 006 language String eng characterSet String utf8 shortName String ATL02 originatorOrganizationName String GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System abstract String ATL02 Science unit converted time ordered telemetry calibrated for instrument effects. All photon events per beam per shot. Includes atmosphere raw profiles, housekeeping data, engineering data, s/c position, and pointing data. purpose String The purpose of ATL02 is to provide science-unit, calibrated data for upstream processing. Data converted from raw counts to science units, calibrated for instrument effects and precisely time-tagged. ATL02 provides the position and pointing data needed to precisely geolocate each photon. ATL02 is of limited use to the science community. credit String The software that generates the ATL02 product was designed and implemented at the NASA Wallops Flight Facility in Wallops Island, Virginia. status String onGoing topicCategory String geoscientificInformation Extent northBoundLatitude Float64 0.024205599999999997 eastBoundLongitude Float64 -147.1225872 southBoundLatitude Float64 -26.963315599999998 westBoundLongitude Float64 -149.89922479999998 rangeBeginningDateTime String 2022-12-31T23:56:31.880938Z rangeEndingDateTime String 2023-01-01T00:03:34.876648Z QADatasetIdentification abstract String An ASCII product that contains statistical information on data product results. These statistics enable data producers and users to assess the quality of the data in the data product granule creationDate String 2023-01-03T18:18:08.000000Z fileName String ATL02_20221231235632_01741814_006_01.qa Lineage Control description String Text-based keyword=value file generated automatically within the ICESat-2 data system that specifies all of the conditions required for each individual run of the software. fileName String CTL_atlas_l1b_011452281.ctl shortName String CNTL version String 1 Calibration description String TAI to UTC leapsecond file retrieved from ftp://maia.usno.navy.mil/ser7/tai-utc.dat fileName String SET_BY_PGE shortName String SET_BY_PGE uuid String SET_BY_PGE version String SET_BY_PGE ANC26-02 description String HDF5 template file that defines the organization and default content of the product metadata. fileName String atl02_metadata_template.h5 shortName String ANC26-02 uuid String b38f0fd2-13f9-3915-b88b-2db6daa85ddc version String 050 ANC21 description String ATLAS calibrations file derived from CAL products provided by the ATLAS CAL team. fileName String anc21_20221021_001_01.h5 shortName String ANC21 uuid String 9873e078-d6a9-3924-8dfa-aae72545886d version String 20221021 ANC36-02 description String ISO 19139 XML file containing Series-level metadata information. fileName String ANC36-02_20221024174747_006_01.xml shortName String ANC36-02 uuid String 92a724ee-72bc-3477-ac83-5defc9911d26 version String 006 ANC38-02 description String ISO 19139 XML file containing DataSet-level metadata information. fileName String ANC38-02_20221024174748_006_01.xml shortName String ANC38-02 uuid String 0d855903-5102-3caa-92f1-f07842564d29 version String 006 ANC25-02 description String HDF5 template file that defines the organization and default content of the product. fileName String atl02_template.h5 shortName String ANC25-02 uuid String 0c0b8092-d872-38e7-b70a-97564b1a6d67 version String 050 ANC27 description String Frequency/Trend file provided by the ICESat-2 Instrument Support Facility. fileName String ANC27_002_20221227000000.DAT shortName String ANC27 uuid String c457e076-d812-3808-9ae7-62d33183dad6 version String 002 ANC13 description String Instrument state file provided by the ICESat-2 Instrument Support Facility. fileName String ANC13_001_20223050000000_01.DAT shortName String ANC13 uuid String 98faab5b-4eed-30d1-bf21-e25d73424f86 version String 001 ANC19 description String TAI to UTC leapsecond file retrieved from ftp://maia.usno.navy.mil/ser7/tai-utc.dat fileName String tai_utc_2017.dat shortName String ANC19 uuid String 7c66d365-278a-31f7-8fe4-9c80e2f012e5 version String 001 ATL01 description String L1A data product. end_geoseg String SET_BY_PGE start_geoseg String SET_BY_PGE fileName String ATL01_20221231235632_01741814_003_01.h5 shortName String ATL01 uuid String be0bd1d1-38e0-3f11-b1d0-128639f07408 version String 003 start_cycle Int32 18 end_cycle Int32 18 start_orbit Int32 23954 end_orbit Int32 23954 start_rgt Int32 174 end_rgt Int32 174 start_region Int32 14 end_region Int32 14 ProcessStep Browse processDescription String Browse processing is performed for each granule SIPS produces. The browse utility reads data from the granule and produces browse images as defined in the respective product ATBD. The utility then embeds each browse image into the product within the /Browse group. identifier String atlas_brw softwareVersion String Version 3.0 softwareDate String Sep 21 2022 softwareTitle String Creates ATLAS HDF5 browse files runTimeParameters String CTL_atlas_l1b_011452281.ctl stepDateTime String 2023-01-03T18:18:48.000000Z Metadata processDescription String Metadata information is processed by the metadata utility for each granule produced by SIPS. During PGE processing, dynamic metadata are written to the product. Additional static information is provided with the metadata template. The metadata utility reads ISO Dataset and Series metadata files and updates the product with static information from within those files. The utility then merges the static and dynamic metadata to creates output ISO19139 Dataset and Series XML files. Finally the utility reads the ISO19139 Dataset and Series XML files into memory and stores the textual representations as attributes attached to the /METADATA group. identifier String atlas_meta softwareVersion String Version 5.0 softwareDate String Sep 21 2022 softwareTitle String Creates ATLAS XML metadata files runTimeParameters String CTL_atlas_l1b_011452281.ctl stepDateTime String 2023-01-03T18:19:07.000000Z PGE ATBDDate String 12/20/2019 ATBDTitle String Algorithm Theoretical Basis Document (ATBD) for ATL02 (Level 1B) Data Product Processing ATBDVersion String v.3 documentDate String Feb 2020 documentation String ATLAS Science Algorithm Software Design Description (SDD) - Volume 6 (atlas_l1b) processDescription String The atlas_l1b process reads reformatted telemetry data (ATL01), performs science and engineering unit conversion, applies instrument-based calibrations and writes the information to ATL02. In addition, the software splits photons into strong/weak beams, performs duplicate event removal, and detects Transmitter Echo Path (TEP) photons. identifier String atlas_l1b softwareVersion String Version 5.0 softwareDate String Sep 21 2022 softwareTitle String ATLAS L1B PGE runTimeParameters String CTL_atlas_l1b_011452281.ctl stepDateTime String 2023-01-03T18:15:50.000000Z QA processDescription String QA processing is performed by an external utility on each granule produced by SIPS. The utility reads the granule, performs both generic and product-specific quality-assessment calculations, and writes a text-based quality assessment report. The name and creation data of this report are identified within the QADatasetIdentification metadata identifier String atl02_qa_util softwareVersion String Version 5.0 softwareDate String Sep 21 2022 softwareTitle String ATL02 QA Utility runTimeParameters String CTL_atlas_l1b_011452281.ctl stepDateTime String 2023-01-03T18:18:08.000000Z