OBJECT = COLUMN NAME = MET COLUMN_NUMBER = 1 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 1 DESCRIPTION = "Mission elapsed time in seconds." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ORBIT_NUMBER COLUMN_NUMBER = 2 BYTES = 5 DATA_TYPE = ASCII_INTEGER START_BYTE = 13 DESCRIPTION = "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." END_OBJECT = COLUMN OBJECT = COLUMN NAME = HPGE_RAW_EVENTS COLUMN_NUMBER = 3 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 20 DESCRIPTION = "Counter of HPGe Raw events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SHIELD_RAW_EVENTS COLUMN_NUMBER = 4 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 32 DESCRIPTION = "Counter for SHIELD raw events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ACCUMULATED_DEAD_TIME COLUMN_NUMBER = 5 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 44 DESCRIPTION = "Counter for accumulated dead time." END_OBJECT = COLUMN OBJECT = COLUMN NAME = HPGE_CHARGE_RESETS COLUMN_NUMBER = 6 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 56 DESCRIPTION = "Number of HPGe charge resets." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SHIELD_CHARGE_RESETS COLUMN_NUMBER = 7 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 68 DESCRIPTION = "Number of SHIELD charge resets." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ACCUMULATION_TIME COLUMN_NUMBER = 8 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 80 DESCRIPTION = "Accumulation time for software counters." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ALL_EVENTS COLUMN_NUMBER = 9 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 92 DESCRIPTION = "All events counter." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ALL_CH0_CH1_EVENTS COLUMN_NUMBER = 10 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 104 DESCRIPTION = "All channel 0 and channel 1 events. Excludes inverted Channel 0, Pileups, and Pulser events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ALL_CH0_EVENTS COLUMN_NUMBER = 11 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 116 DESCRIPTION = "All single Channel 0 events - either singlet or fails crossing time criterion." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ALL_CH1_EVENTS COLUMN_NUMBER = 12 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 128 DESCRIPTION = "All single Channel 1 events - either singlet or fails crossing time criterion." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INVALID_SINGLE_CH0 COLUMN_NUMBER = 13 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 140 DESCRIPTION = "Single channel 0 out-of-range events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INVALID_SINGLE_CH1 COLUMN_NUMBER = 14 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 152 DESCRIPTION = "Single channel 1 out-of-range events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INVALID_COINCIDENT_CH0 COLUMN_NUMBER = 15 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 164 DESCRIPTION = "Channel 0 out-of-range coincidence events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INVALID_COINCIDENT_CH1 COLUMN_NUMBER = 16 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 176 DESCRIPTION = "Channel 1 out-of-range coincidence events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = VALID_SINGLE_CH0 COLUMN_NUMBER = 17 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 188 DESCRIPTION = "Single channel 0 valid events only." END_OBJECT = COLUMN OBJECT = COLUMN NAME = VALID_COINCIDENT_CH0 COLUMN_NUMBER = 18 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 200 DESCRIPTION = "Coincidence channel 0 valid events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = VALID_SINGLE_CH1 COLUMN_NUMBER = 19 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 212 DESCRIPTION = "Single channel 1 valid events only." END_OBJECT = COLUMN OBJECT = COLUMN NAME = VALID_COINCIDENT_CH1 COLUMN_NUMBER = 20 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 224 DESCRIPTION = "Coincidence channel 1 valid events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ALL_VALID_COINCIDENT COLUMN_NUMBER = 21 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 236 DESCRIPTION = "All valid coincidence events - both Channel 0 and Channel 1 valid." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INVERTED_CH0 COLUMN_NUMBER = 22 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 248 DESCRIPTION = "Channel 0 events flagged 'inverted' by the hardware." END_OBJECT = COLUMN OBJECT = COLUMN NAME = CH0_PILEUP_REJECT COLUMN_NUMBER = 23 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 260 DESCRIPTION = "Channel 0 pileup rejected events. Only if pileup rejection is enabled." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FIFO_FULL_COUNT COLUMN_NUMBER = 24 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 272 DESCRIPTION = "Hardware FIFO full flag tested for all events. Number of events for which First-In-First-Out buffer is full." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PULSER_ENERGY_SUM COLUMN_NUMBER = 25 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 284 DESCRIPTION = "Pulser energy sum. Summation of (Pulser Energy - Offset)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PULSER_ENERGY_SUM2 COLUMN_NUMBER = 26 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 296 DESCRIPTION = "Pulser energy sum squared. Summation of square of (Pulser Energy - Offset)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PULSER_EVENTS COLUMN_NUMBER = 27 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 308 DESCRIPTION = "Number of valid pulser events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INVALID_PULSER_EVENTS COLUMN_NUMBER = 28 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 320 DESCRIPTION = "Out-of-range pulser events." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NEUTRON_EVENTS COLUMN_NUMBER = 29 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 332 DESCRIPTION = "Coincidence events that meet neutron criterion." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PULSER_OFFSET COLUMN_NUMBER = 30 BYTES = 10 DATA_TYPE = ASCII_INTEGER START_BYTE = 344 DESCRIPTION = "Pulser energy offset used to form PULSER_ENERGY_SUM and PULSER_ENERGY_SUM2." END_OBJECT = COLUMN