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 DrizProductModel) – A FITS filename or a DrizProductModel of a single drizzled image. The input image is assumed to be background subtracted.

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

Attributes Summary

spec

Methods Summary

process(input) This is where real work happens.

Attributes Documentation

spec = "\n kernel_fwhm = float(default=2.0) # Gaussian kernel FWHM in pixels\n kernel_xsize = float(default=5) # Kernel x size in pixels\n kernel_ysize = float(default=5) # 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 output_ext = string(default='.ecsv') # Default type of output\n suffix = string(default='cat') # Default suffix for output files\n "

Methods Documentation

process(input)[source]

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