| COMPARE_VALID_MaxDiff | float | Maximum acceptable MasterDark compare value | |
| COMPARE_VALID_Stdev | float | Compare MasterDark value | |
| QC_VALID_DC_Max | float | Maximum acceptable MasterDark DC value | |
| QC_VALID_DC_Min | float | Minimumacceptable MasterDarks DC value | |
| QC_VALID_NBadPix_Max | float | Maximum acceptable MasterDark NBadPix value | |
| QC_VALID_Version | str | Version of MasterDark | |
