SourceCatalogStep

class jwst.source_catalog.SourceCatalogStep(name=None, parent=None, config_file=None, _validate_kwds=True, **kws)[source]

Bases: jwst.stpipe.Step

Create a final catalog of source photometry and morphologies.

Parameters

input (str or ImageModel) – A FITS filename or an ImageModel of a drizzled image.

Create a Step instance.

Parameters
  • name (str, optional) – The name of the Step instance. Used in logging messages and in cache filenames. If not provided, one will be generated based on the class name.

  • parent (Step instance, optional) – The parent step of this step. Used to determine a fully-qualified name for this step, and to determine the mode in which to run this step.

  • config_file (str path, optional) – The path to the config file that this step was initialized with. Use to determine relative path names of other config files.

  • **kws (dict) – Additional parameters to set. These will be set as member variables on the new Step instance.

Attributes Summary

reference_file_types

spec

Methods Summary

process(input_model)

This is where real work happens.

Attributes Documentation

reference_file_types = ['apcorr', 'abvegaoffset']
spec = "\n bkg_boxsize = float(default=100) # background mesh box size in pixels\n kernel_fwhm = float(default=2.0) # Gaussian kernel FWHM in pixels\n kernel_xsize = float(default=None) # Kernel x size in pixels\n kernel_ysize = float(default=None) # Kernel y size in pixels\n snr_threshold = float(default=3.0) # SNR threshold above the bkg\n npixels = float(default=5.0) # min number of pixels in source\n deblend = boolean(default=False) # deblend sources?\n aperture_ee1 = float(default=30) # aperture encircled energy 1\n aperture_ee2 = float(default=50) # aperture encircled energy 2\n aperture_ee3 = float(default=70) # aperture encircled energy 3\n suffix = string(default='cat') # Default suffix for output files\n "

Methods Documentation

process(input_model)[source]

This is where real work happens. Every Step subclass has to override this method. The default behaviour is to raise a NotImplementedError exception.