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

Bases: jwst.stpipe.core.JwstStep

JumpStep: Performs CR/jump detection on each ramp integration within an exposure. The 2-point difference method is applied.

Create a Step instance.

  • 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



Methods Summary


This is where real work happens.

Attributes Documentation

reference_file_types = ['gain', 'readnoise']
spec = "\n        rejection_threshold = float(default=4.0,min=0) # CR sigma rejection threshold\n        maximum_cores = option('none', 'quarter', 'half', 'all', default='none') # max number of processes to create\n        flag_4_neighbors = boolean(default=True) # flag the four perpendicular neighbors of each CR\n        max_jump_to_flag_neighbors = float(default=200) # maximum jump sigma that will trigger neighbor flagging\n        min_jump_to_flag_neighbors = float(default=10) # minimum jump sigma that will trigger neighbor flagging\n    "

Methods Documentation


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