Examples

Whether the data are contained in a list of ASDF files or provided as an ASN file, the ModelContainer class must be used to properly handle the data that will be used in the outlier detection step.

1. To run the outlier detection step (with the default parameters) on a list of 2 ASDF files named "img_1.asdf" and "img_2.asdf":

   from romancal.outlier_detection import OutlierDetectionStep
   from romancal.datamodels import ModelContainer
   # read the file list into a ModelContainer object
   mc = ModelContainer(["img_1.asdf", "img_2.asdf"])
   step = OutlierDetectionStep()
   step.process(mc)
   

2. To run the outlier detection step (with the default parameters) on an ASN file called “asn_sample.json” with the following content:

   {
           "asn_type": "None",
           "asn_rule": "DMS_ELPP_Base",
           "version_id": null,
           "code_version": "0.9.1.dev28+ge987cc9.d20230106",
           "degraded_status": "No known degraded exposures in association.",
           "program": "noprogram",
           "constraints": "No constraints",
           "asn_id": "a3001",
           "target": "none",
           "asn_pool": "test_pool_name",
           "products": [
                   {
                   "name": "files.asdf",
                   "members": [
                           {
                           "expname": "img_1.asdf",
                           "exptype": "science"
                           },
                           {
                           "expname": "img_2.asdf",
                           "exptype": "science"
                           }
                   ]
                   }
           ]
   }
   

   from romancal.outlier_detection import OutlierDetectionStep
   from romancal.datamodels import ModelContainer
   # read the file list into a ModelContainer object
   mc = ModelContainer("asn_sample.json")
   step = OutlierDetectionStep()
   step.process(mc)
   

3. To run the outlier detection step (with the default parameters) on an ASN file called “asn_sample.json” (the files listed in the association file must have been processed through TweakRegStep) using the command line:

   strun --disable-crds-steppar  --suffix='cal'  romancal.step.OutlierDetectionStep asn_sample.json