It would be useful if there was some additional FITS keywords in output Spectrum and SRM files for keeping track of how the data has already been processed
[x] If background subtraction has be performed
[x] Parent observation data file name
[x] Science data compression level
[x] Unique Request ID
[x] Distance used when calculating DRM
[x] Grid transmission factor used when calculating DRM
It would be useful if there was some additional FITS keywords in output Spectrum and SRM files for keeping track of how the data has already been processed