desihub / desispec

DESI spectral pipeline
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Deal with varying readnoise in SM6 b3. #2249

Open julienguy opened 1 month ago

julienguy commented 1 month ago

SM6 b3 has had a peculiar noise since the beginning of the survey with the noise level jumping from 3.5 to 9 electrons for some rows. We haven't done anything about it so far, but it would be an improvement to measure and record this increased readnoise for the affected CCD rows.

Screenshot from 2024-05-10 14-04-03