PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 339 FILE_RECORDS = 54 PRODUCT_CREATION_TIME = 2019-04-22T00:00:00 PRODUCT_ID = "SEQ_ALICE_KEMCRUISE1" DATA_SET_ID = { "NH-X-ALICE-2-KEMCRUISE1-V1.0" "NH-X-ALICE-3-KEMCRUISE1-V1.0" } INSTRUMENT_HOST_ID = "NH" INSTRUMENT_ID = "ALICE" TARGET_NAME = "N/A" ^SEQUENCE_TABLE = "SEQ_ALICE_KEMCRUISE1.TAB" START_TIME = 2017-01-15T20:10:43 STOP_TIME = 2017-10-31T15:05:25 OBJECT = SEQUENCE_TABLE INTERCHANGE_FORMAT = ASCII INDEX_TYPE = "SINGLE" NAME = SEQUENCE_TABLE ROW_BYTES = 339 ROWS = 54 COLUMNS = 5 DESCRIPTION = "This table lists the sequences for the New Horizons ALICE instrument during the KEMCRUISE1 mission phase. The columns in the table are the three-letter abbreviation for the instrument (or N/A; see note below), the sequence identifier, the start time of the sequence as a UTC, the start time of the sequence as a spacecraft clock (SCLK), and a description of the sequence. The effective end time of each sequence in this table is the start time of the next sequence in this table; the actual end time of an as-planned sequence is typically much earlier than the effective end time, but in practice it will not matter because no observations intended as part a sequence are made after the actual end time of that sequence. Sequences in other tables of other instruments are unrelated to those in this table. Note that the SCLK is the mission event time (MET; spacecraft seconds since the clock started) with a partition prefix (e.g. 1/) and a sub-second suffix (e.g. :25000). N.B The presence in this table of a sequence does not guarantee there will be observations in this data set taken during that sequence. This table only summarizes a list of intended sequences passed to the PDS archiving task via sequencing documents; that list has not been validated against the actual spacecraft activities; reasons for sequences being in this list but generating no observations are spacecraft safing events and/or incorrect timing of spacecraft commands, causing the sequence to end prematurely. In some cases the three-letter abbreviation in the first column will be changed to N/A on a row for a sequence for which there are no observations. Some descriptions contain opaque shorthand for instrument activities. Those activities are explained in the following text: HACK-TEST DURING WAKEUP: The hack-test verifies the pixel-hack issue. The pixel-hack issue is the effect that if the instrument is commanded to perform a pixellist acquisition immediately after power up, then a large proportion of the timehacks have corrupt values in the lower bits of their values. Once a histogram acquisition is performed this behavior disappears and pixellist acquisition timehacks show no corruption. Wake up hack-tests verify this behavior by 1) initially commanding a pixellist acquisition of two frames, which generates the errors (the first frame is larger and so generates more errors), 2) commanding a histogram acquisition, and 3) commanding another pixellist acquisition, the timehacks of which show no corruption. On the ground the science team checked the timehacks for all four frames and counts the errors those counts from the first pair of frames end up in this table e.g. hack-test 5432+1234. Note that a) the second pair of pixellist frames never generated any such errors, and b) this behavior remained stable and repeatable throughout the mission. " OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = INSTR3 START_BYTE = 2 BYTES = 3 DATA_TYPE = "CHARACTER" FORMAT = "A3" DESCRIPTION = " Three-letter instrument prefix. N.B. The value may be N/A if no observations were taken during the sequence described on the row. " END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = SEQID START_BYTE = 8 BYTES = 53 DATA_TYPE = "CHARACTER" FORMAT = "A53" DESCRIPTION = " Sequence identifier(s) " END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = DATE START_BYTE = 64 BYTES = 23 DATA_TYPE = "TIME" FORMAT = "A23" DESCRIPTION = " Start of sequence, UTC; end is next sequence " END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = SCLK START_BYTE = 90 BYTES = 18 DATA_TYPE = "CHARACTER" FORMAT = "A18" DESCRIPTION = " Start of sequence, Spacecraft clock; end is next sequence " END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = DESCR START_BYTE = 111 BYTES = 226 DATA_TYPE = "CHARACTER" FORMAT = "A226" DESCRIPTION = " Description of sequence " END_OBJECT = COLUMN END_OBJECT = SEQUENCE_TABLE END