Reply To: Interpretation of Rejection mapsBy KeesScherer / Activity › Forums › Astrosoftware › Astro Pixel Processor › Interpretation of Rejection maps › Reply To: Interpretation of Rejection maps April 29, 2017 at 13:40 #14615 KeesSchererParticipant And some statistics, the cosmic ray has 1758 ADU, average=828 and sdev=112, so 828+3×112=1164. The 1758 gets rejected alright……