| ExtObjectId | ExtObjectId | Unique EXT object identifier [None] | |
| MaximumNumberOfOutliers | int | QC: Maximum number of outliers [None] | |
| MaximumSubwinDiff | float | QC: Difference in MaximumSubwinFlatness relative to the previous version [ADU] | |
| MaximumSubwinFlatness | float | QC: Maximum difference between median values of any two sub-windows [ADU] | |
| OverscanCorrection | int | Overscan correction method index [None] | |
| SigmaClip | float | Threshold factor for rejecting raw twilight flat pixel value outliers (sigma is taken as the scaled gain measurement) [None] | |
