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EranOfek / AstroPack

Astronomy & Astrophysics Software Pacakge
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Flux reported in coadd catalogs not consistent with the one reported in single images #481

Open simonegarrappa opened 2 months ago

simonegarrappa commented 2 months ago

The flux reported in coadd catalogs for each source is averaged over the number of images coadded. This is not consistent with the flux reported in single images catalogs, that is the total number of counts.

Two suggestions to have them reported in a consistent way in the two formats:

1- Both reporting the total number of counts. In this way it is trivial to calculate the counts rate in both cases dividing by 'EXPTIME'. 2- Both reporting the counts rate instead of the total number of counts.

EranOfek commented 2 weeks ago

It also means that error calculations based on Poisson statistics are wrong.