CCSD3ZF0000100000001NJPL3IF0PDSX00000001 PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = DATA_SET DATA_SET_ID = "ULY-J-GRB-2-RDR-RAW-COUNT-RATE-V1.0" OBJECT = DATA_SET_INFORMATION DATA_SET_NAME = "ULY JUP GRB SOLAR X-RAY/COSMIC GAMMA-RAY RAW COUNT RATE" DATA_SET_COLLECTION_MEMBER_FLG = N START_TIME = 1992-01-25T00:00:00.126Z STOP_TIME = 1992-02-17T23:59:59.941Z DATA_SET_RELEASE_DATE = 1998-05-01 PRODUCER_FULL_NAME = "ROGER WILLIAMS" DETAILED_CATALOG_FLAG = N DATA_OBJECT_TYPE = "TIME SERIES" DATA_SET_DESC = " Data Set Overview ================= The archived data consist of count rates from the sum of two hemispherical detectors covering 4 pi steradians and operating continuously. The detectors are 3 mm thick CsI scintillators coupled to photomultiplier tubes. The nominal energy range is 25-150 keV, but the below table should be consulted to find the accurate thresholds for any day of the mission. A more complete description of the instrument may be found in [HURLEYETAL1992] and [COTINETAL1983]. Although the prime objectives of this investigation are the study of solar and cosmic x- and gamma-ray bursts, it should be noted that the experiment is also sensitive to solar protons and electrons. The former deposit energy directly in the scintillator if they are energetic enough, while the latter may produce x- radiation locally by bremsstrahlung. Thus although the counting rates are generally stable at about 500 c/s over the long term, there are periods of weeks to a month or so when the rates increase considerably due to particles. Examples may be found in March 1991 (solar protons) and February 1992 (particles in the Jovian magnetosphere). The time resolution of the data takes on one of four values depending on the telemetry rate and instrument operating mode: 0.25, 0.5, 1, or 2 seconds. YEAR DAY LOWER THRESHOLD UPPER THRESHOLD KEV/CHANNEL 1992 22 16.11 161.10 10.07 1992 25 16.04 160.42 10.03 1992 26 15.98 159.83 9.99 1992 27 16.23 163.38 10.15 1992 28 15.99 159.95 10.00 1992 47 14.89 171.77 10.74 1992 48 14.87 171.57 10.72 1992 57 24.54 167.29 10.46 Please note that this file has been converted to ASCII FORMAT (.TAB) files at PDS/PPI Node. The '.TAB' files contain the following columns: TIME = spacecraft event time in the format yyyy-mm-ddThh:mm:ss.sssZ HEADER = Header information that is high 6 bits of binary HEADER specification VERSION = Version that is low order 2 bits of binary HEADER specification SUBHEAD = Subheader COUNTS = Counts INT_TIME = Integration Time Parameters ========== INSTRUMENT OPERATING MODE FOR DATA FILES: file mode file mode -------- -------- -------- ------- T92025 A1 T92037 A2 T92026 A1 T92038 A2 T92027 A1 T92039 A1 T92028 A1 T92040 A2 T92029 A1 T92041 A1 T92030 A1 T92042 A1 T92031 A2 T92043 A1 T92032 A2 T92044 A2 T92033 A2 T92045 A2 T92034 A2 T92046 A2 T92035 A2 T92047 A2 T92036 A2 T92048 A2" CONFIDENCE_LEVEL_NOTE = " Confidence Level Overview ========================= Data rate changes produce short spikes in the count rates due to a processing artifact. These can in principle be corrected if the data are scanned and the rate changes are identified; the count rate spikes can then be adjusted to their correct values. There are also short (one sample long) count rate dropouts, due to an artifact of the onboard software." END_OBJECT = DATA_SET_INFORMATION OBJECT = DATA_SET_TARGET TARGET_NAME = JUPITER END_OBJECT = DATA_SET_TARGET OBJECT = DATA_SET_HOST INSTRUMENT_HOST_ID = ULY INSTRUMENT_ID = GRB END_OBJECT = DATA_SET_HOST OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "COTINETAL1983" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "HURLEYETAL1992" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "HURLEYETAL1993" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "HURLEY&SOMMER1994" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "WAITEETAL1992" END_OBJECT = DATA_SET_REFERENCE_INFORMATION END_OBJECT = DATA_SET END