gather_reference_data

romanisim.image.gather_reference_data(image_mod, usecrds=False)

Gather reference data corresponding to metadata.

This function pulls files from parameters.reference_data and/or CRDS to fill out the various reference files needed to perform the simulation. If CRDS is set, values in parameters.reference_data are used instead of CRDS files when the reference_data are None. If all CRDS files should be used, parameters.reference_data must contain only Nones.

The input metadata is updated with CRDS software versions if CRDS is used.

Returns:

dictionary containing the following keys:

read_noise darkrate gain inv_linearity linearity saturation reffiles

These have the reference images or constant values for the various

reference parameters.