SOFIAChooser

class sofia_redux.pipeline.sofia.sofia_chooser.SOFIAChooser

Bases: Chooser

Choose SOFIA Redux reduction objects.

Currently, HAWC+, FORCAST, FIFI-LS, FLITECAM, and EXES instruments are fully supported.

Input data that cannot be read as a FITS file by astropy.io.fits is ignored. If there is no good data to reduce, a null value (no reduction object) is returned.

HAWC data is determined by the value of the INSTRUME keyword. If it is set to ‘HAWC_PLUS’, a HAWCReduction object is instantiated and returned. This reduction object handles all instrument modes for the HAWC DRP pipeline.

FORCAST data has keyword INSTRUME = ‘FORCAST’. Imaging data is determined from the value of the SPECTEL1 and 2 keywords: if the primary filter is not a known grism, then the data is assumed to be imaging. In this case, a FORCASTImagingReduction object is instantiated and returned. Otherwise, a FORCASTSpectroscopyReduction object is returned.

FIFI-LS data has keyword INSTRUME = ‘FIFI-LS’. A FIFILSReduction object is returned for all FIFI-LS data.

FLITECAM data has keyword INSTRUME = ‘FLITECAM’. Imaging and spectroscopy types are distinguished via the INSTCFG keyword, and a FLITECAMImagingReduction or FLITECAMSpectroscopyReduction object is returned, as appropriate.

EXES data has keyword INSTRUME = ‘EXES’. An EXESReduction object is returned for all EXES data.

If input data types do not match, or if no more specific reduction object was found, a generic Reduction object is returned.

Initialize the chooser.

Methods Summary

choose_reduction([data, config])	Choose a reduction object.
get_key_value(header, key)	Get a key value from a header.

Methods Documentation

choose_reduction(data=None, config=None)

Choose a reduction object.

Parameters:

datalist of str, optional

Input FITS file paths. If not provided, None will be returned.

configstr, dict, or ConfigObj, optional

Configuration file or object. May be any type accepted by the configobj.ConfigObj constructor. If present, may be used to choose specialized reductions for some instruments.

Returns:

Reduction or None

The reduction object appropriate to the input data.

get_key_value(header, key)

Get a key value from a header.

Parameters:

headerastropy.io.fits.Header

FITS header.

keystr

Key to retrieve.

Returns:

str

String representation of the value; UNKNOWN if not found.