ULTRA l1a TOF decom error #2557
Description
error in the l1a processing that is causing certain jobs to fail.
For example, the unpacking fails for this packet: imap_ultra_l0_raw_20251230-repoint00094_v001.pkts
The error is occurring when decompressing the images for APID 947 (ULTRA_PHXTOF_HIGH_ANGULAR). The specific error is because we are attempting to read past the end of the binary data.
IndexError: Attempted to read past the end of binary string. Current position: 32648, Requested bits: 4, String length: 32648
The following is where exactly it fails.
Epoch: 5
Image plane: 1
Row: 52 of 54
Block: 8 of 12
Pixel: 13 of 15 within that block
Larry helped me figure out that we are getting extra sequences.
E.g. the Sequence IDs for the group that it is failing on are [ 0 32 1 2 3 4 5 6 7]
For reference, all dataset SIDS
sequence ids: [ 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
0 1 2 3 4 5 6 7 0 32 1 2 3 4 5 6 7 0 96 1 2 3 4 5
6 7 0 65 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4
5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7]
is 32 a fillval? NO not expected. flight software issue?