Changeset 42718

Timestamp:

Aug 14, 2024, 5:23:21 PM (2 years ago)

Author:

hgao

Message:

restrict 2D overscan subtraction to cells with bg<500 ADU

File:

• branches/2dbias/ppImage/src/ppImageDetrendReadout.c (modified) (1 diff)

branches/2dbias/ppImage/src/ppImageDetrendReadout.c

@@ -153 +153 @@
                 ESCAPE(false, "Unable to determine whether 2D Overscan subtraction should be applied.");
             }
+            // set doTwoDOverscan to False if the cell background is larger than 500 ADU or smaller than zero (peculiar)
+            if (doTwoDOverscan)
+            {
+                float backest = psMetadataLookupF32(NULL, input->parent->concepts, "CELL.BACKEST");
+                if (!isfinite(backest) || backest > 500 || backest < 0)
+                {
+                    doTwoDOverscan = false;
+                }
+            }
         }
         if (!pmOverscanSubtract(input, options->overscan, doTwoDOverscan))