Custom photometry on a set of bricks

[Juan Pablo Calderón]

Hello everyone.

We were performing custom sextractor photometry on a set of bricks.   If i understood correctly, the way to obtaind the manigutdes on each band is using a unique zero point of 22.5. Also we dont have a GAIN value because each brick is obtained from a different set of DECam images (the same it happen with the exposure time).

So, my question is: what is the best way to obtain the photometric calibration from a custom sextractor photometry over a set of bricks? there is a table of zero points of each band we can use in the sextractor configuration?

Thank you!