PDS_VERSION_ID = PDS3 /* label standards identifiers PDS Version 3.8 */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 11286 FILE_RECORDS = 46 MD5_CHECKSUM = "ad71c31e8146ccec8d7463df8223ef86" ^TABLE = "GRD-L1B-090217-090218_110225-DTS-BGO.TAB" PRODUCER_FULL_NAME = "T. H. PRETTYMAN" PRODUCER_INSTITUTION_NAME = "PLANETARY SCIENCE INSTITUTE" PRODUCT_CREATION_TIME = 2011-02-25T06:09:06 PRODUCT_ID = "GRD-L1B-090217-090218_110225-DTS-BGO" PRODUCT_TYPE = "DATA" PRODUCT_VERSION_ID = "1.0" START_TIME = 2009-02-17T22:33:04 STOP_TIME = 2009-02-18T00:44:19 SOFTWARE_NAME = "GRD_L1B_PIPELINE" SOFTWARE_VERSION_ID = "Version 1.0" MISSION_NAME = "DAWN MISSION TO VESTA AND CERES" MISSION_ID = "DAWN" INSTRUMENT_HOST_NAME = "DAWN" INSTRUMENT_HOST_ID = "DAWN" INSTRUMENT_ID = "GRAND" INSTRUMENT_NAME = "GAMMA RAY AND NEUTRON DETECTOR" MISSION_PHASE_NAME = "MARS GRAVITY ASSIST (MGA)" TARGET_NAME = "MARS" TARGET_TYPE = "PLANET" DATA_SET_ID = "DAWN-M-GRAND-3-RDR-MARS-COUNTS-V1.0" DATA_SET_NAME = "DAWN GRAND CALIBRATED MARS FLYBY COUNTS V1.0" SPICE_FILE_NAME = ("naif0009.tls", "DAWN_203_SCLKSCET.00014.tsc", "dawn_rec_081109-090228_090306_v1.bsp", "dawn_sc_090216_090222.bc", "de421.bsp", "pck00008.tpc", "dawn_grand_v00.ti", "dawn_v08.tf") OBJECT = TABLE ROWS = 46 ROW_BYTES = 11286 INTERCHANGE_FORMAT = ASCII COLUMNS = 1025 ^STRUCTURE = "GRD_L1B-BGO.FMT" DESCRIPTION = " This time series contains GRaND calibrated (level1b) data. The time series was constructed by averaging corrected counting rates over a moving window using one of two methods: Central Moving Average (CMA) or Decimated Time Series (DTS). The CMA method provides an result for each science data record by averaging over records on either side of the current point as illustrated here: Science records XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ... | 1 | | 2 | | 3 | | 4 | | 5 | .... where each of the time-ordered science records is indicated by an X and the window boundaries are indicated by the vertical bars. The middle of each time series is labeled with an index (1, 2, ...). The DTS method marches the window through the science data records, resulting in a decimated time series as follows: Science records XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ...| 1 || 2 || 3 || 4 || 5 |... The number of science data records averaged for each point in the time series is given by WINDOW_WIDTH, which is an odd integer. For both methods, all time, ephemeris, and pointing information is determined at the midpoint of the window. The time series parameters for this data set are given here: SERIES_TYPE = 1 Decimated Time Series (DTS) WINDOW_WIDTH = 5 TELREADOUT = 35 TRUE_TIME = 175 This file contains a time series average of calibrated gamma ray pulse height spectra measured by the BGO scintillator. To create the calibrated spectra, the raw spectra were corrected for ADC differential nonlinearity and the gain and offset were adjusted to 8.9 keV/channel and 0 keV, respectively. " END_OBJECT = TABLE END