- class jwst.ramp_fitting.RampFitStep(name=None, parent=None, config_file=None, _validate_kwds=True, **kws)¶
This step fits a straight line to the value of counts vs. time to determine the mean count rate for each pixel.
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.
This is where real work happens.
- algorithm = 'ols'¶
- class_alias = 'ramp_fit'¶
- reference_file_types = ['readnoise', 'gain']¶
- spec = "\n int_name = string(default='')\n save_opt = boolean(default=False) # Save optional output\n opt_name = string(default='')\n suppress_one_group = boolean(default=True) # Suppress saturated ramps with good 0th group\n maximum_cores = option('none', 'quarter', 'half', 'all', default='none') # max number of processes to create\n "¶
- weighting = 'optimal'¶
This is where real work happens. Every Step subclass has to override this method. The default behaviour is to raise a NotImplementedError exception.