rcal-606 Have source detection and tweakreg skip spectral data (#798)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

CHANGES.rst

@@ -1,7 +1,15 @@
 0.11.1 (unreleased)
 ===================
+
+source_detection
+----------------
+- Skip the step if the data is not imaging mode. [#798]
+
+
 tweakreg
 --------
+- Skip the step if the data is not imaging mode [#798]
+
 - Add regression test for TweakReg. [#707]
 
 - WCS fit results are now available in meta.wcs_fit_results. [#714]

romancal/pipeline/exposure_pipeline.py

@@ -119,7 +119,12 @@ def process(self, input):
             result.meta.cal_step.flat_field = "SKIPPED"
 
         result = self.photom(result)
-        result = self.source_detection(result)
+
+        if result.meta.exposure.type == "WFI_IMAGE":
+            result = self.source_detection(result)
+        else:
+            log.info("Source Detection step is being SKIPPED")
+            result.meta.cal_step.source_detection = "SKIPPED"
 
         # setup output_file for saving
         self.setup_output(result)

romancal/source_detection/source_detection_step.py

@@ -16,7 +16,7 @@
     ModeEstimatorBackground,
 )
 from photutils.detection import DAOStarFinder
-from roman_datamodels import datamodels as rdd
+from roman_datamodels import datamodels as rdm
 from roman_datamodels import maker_utils
 
 from romancal.lib import dqflags
@@ -68,7 +68,13 @@ class SourceDetectionStep(RomanStep):
     """
 
     def process(self, input):
-        with rdd.open(input, lazy_load=False) as input_model:
+        with rdm.open(input, lazy_load=False) as input_model:
+            if input_model.meta.exposure.type != "WFI_IMAGE":
+                # Check to see if attempt to find sources in non-Image data
+                log.info("Skipping source detection for spectral exposure.")
+                input_model.meta.cal_step.source_detection = "SKIPPED"
+                return input_model
+
             # remove units from data in this step.
             # DAOStarFinder requires unitless input
             if hasattr(input_model.data, "unit"):

romancal/tweakreg/tweakreg_step.py

@@ -159,6 +159,13 @@ def process(self, input):
 
         # Build the catalogs for input images
         for i, image_model in enumerate(images):
+            if image_model.meta.exposure.type != "WFI_IMAGE":
+                # Check to see if attempt to run tweakreg on non-Image data
+                self.log.info("Skipping TweakReg for spectral exposure.")
+                # Uncomment below once rad & input data have the cal_step tweakreg
+                # image_model.meta.cal_step.tweakreg = "SKIPPED"
+                return image_model
+
             if hasattr(image_model.meta, "source_detection"):
                 is_tweakreg_catalog_present = hasattr(
                     image_model.meta.source_detection, "tweakreg_catalog"