desihub / desispec

DESI spectral pipeline
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tiles-daily.csv contains null values for PROGRAM #2251

Open weaverba137 opened 1 month ago

weaverba137 commented 1 month ago

The first ~25% of rows in tiles-daily.csv have a null value for the PROGRAM column. In contrast specprods such as iron have no such null values.

The difference is that tiles-daily.csv is updated incrementally, while tiles-iron.csv would have been generated from scratch.

The most likely explanation is that sometime in the past desi_tsnr_afterburner had an issue with identifying the correct value for PROGRAM and left it blank. After the problem was fixed, the file was not regenerated, but instead newer tiles with valid PROGRAM were simply appended to the file.

weaverba137 commented 1 month ago

See also #1724, #2250.