urn:nasa:pds:mess_grs_raw:data_edr:grs_shi2014246zzz_dat 1.0 1.10.1.0 Product_Observational 2018-06-08 1.0 PDS4 migrated product 2014-09-03T00:15:43.000Z 2014-09-03T23:52:13.000Z MESSENGER Mission urn:nasa:pds:context:investigation:mission.messenger data_to_investigation MESSENGER Spacecraft urn:nasa:pds:context:instrument_host:spacecraft.mess is_instrument_host Gamma Ray Spectrometer Instrument urn:nasa:pds:context:instrument:grs.mess is_instrument Mercury Planet urn:nasa:pds:context:target:planet.mercury data_to_target Mercury Orbit Year 4 2/052027342 2/052112332 grs_shield_spectra_2 pipe-grs2edr 1.1 shield grs_shi2014246zzz.dat 2014-09-04T16:47:00Z 0 948 This table contains one set of raw spectra collected from the SHIELD detector, MESSENGER Gamma Ray Spectrometer (GRS). A set is defined as all data with MET timestamps corresponding to a given Earth day. Additional details are contained in the EDR SIS document. 8 1 2070 met 1 1 UnsignedMSB4 4 Mission elapsed time, in seconds, corresponding to the start of the accumulation period for the spectra. accum_time 2 5 UnsignedMSB4 4 Accumulation time, in seconds, of the HPGe detector. midpoint_met 3 9 UnsignedMSB4 4 The mission elapsed time at the midpoint of the observation. Defined as: MET at the start of the observation + (ACCUM_TIME / 2). orbit_number 4 13 UnsignedMSB2 2 Orbit number is a unique identifier for a given orbit of the MESSENGER spacecraft around Mercury. Orbit number is defined as starting at apoherm and is calculated using the MET value and the appropriate SPICE kernels. Orbit numbering does not start until MESSENGER performs the Mercury orbit insertion. Until that time the value for orbit number is 0. start_bin 5 15 UnsignedMSB2 2 Start Bin of the Shield detector. number_of_bins 6 17 UnsignedMSB2 2 Number of bins in the raw spectra. grs_priority_level 7 19 UnsignedMSB2 2 Indicates the type of priority assigned to the science packet. The priority level is tied to the ApID of the packet. Priority level varies from 0-3, 0 being highest and 3 being lowest priority. bad_data_flag 8 21 UnsignedMSB2 2 Intended for use as a bit-string bad data flag to indicate specific problems associated with the data. Values are expected to be assigned to specific bits as problems are identified during the course of the mission. Currently no values have been assigned and will default to a value of zero. 1 1024 1 0 23 2048 shield 1 1 UnsignedMSB2 2 Contains a set of data values as defined by the Appendix SHIELD 2 Content Description in the EDR SIS. grs_shi2014246zzz.lbl 0 PDS3 Original PDS3 label Carriage-Return Line-Feed