| ExtObjectId | ExtObjectId | Unique EXT object identifier [None] | |
| MaximumAbsMean | float | QC: Maximum absolute mean value of the bias levels [ADU] | |
| MaximumStdev | float | QC: Maximum sample standard deviation value of the bias levels [ADU] | |
| MaximumStdevDifference | float | QC: Maximum sample standard deviation difference of the bias levels relative to the previous version [ADU] | |
| MaximumSubwinFlatness | float | QC: Maximum difference between median values of any two sub-windows [ADU] | |
| MaximumSubwinStdev | float | QC: Maximum sample standard deviation value of any sub-window [ADU] | |
| OverscanCorrection | int | Overscan correction method index [None] | |
| SigmaClip | float | Threshold factor for rejecting raw bias pixel value outliers (sigma is taken as the readout noise measurement) [None] | |
