Merge branch 'tickets/DM-26595'

lsst · Sep 3, 2020 · 4dc13f4 · 4dc13f4
2 parents d915bd2 + b546600
commit 4dc13f4
Showing 1 changed file with 9 additions and 4 deletions.
diff --git a/python/lsst/cp/pipe/ptc.py b/python/lsst/cp/pipe/ptc.py
@@ -404,10 +404,15 @@ def runDataRef(self, dataRef, visitPairs):
         allTags = []
         for (v1, v2) in visitPairs:
             # Get postISR exposures.
-            dataRef.dataId['expId'] = v1
-            exp1 = dataRef.get("postISRCCD", immediate=True)
-            dataRef.dataId['expId'] = v2
-            exp2 = dataRef.get("postISRCCD", immediate=True)
+            try:
+                dataRef.dataId['expId'] = v1
+                exp1 = dataRef.get("postISRCCD", immediate=True)
+                dataRef.dataId['expId'] = v2
+                exp2 = dataRef.get("postISRCCD", immediate=True)
+            except RuntimeError:
+                self.log.warn(f"postISR exposure for either expId {v1} or expId {v2} could not be retreived. "
+                              "Ignoring flat pair.")
+                continue
             del dataRef.dataId['expId']
 
             checkExpLengthEqual(exp1, exp2, v1, v2, raiseWithMessage=True)