| MAXIMUM_BIAS_DIFFERENCE | float | QC: Maximum difference between biases | ADU |
| MAXIMUM_ITERATIONS | int | The maximum number of iterations | |
| MAXIMUM_READNOISE | float | QC: The maximum value for read_noise | ADU |
| MAXIMUM_READNOISE_DIFFERENCE | float | QC: Maximum difference between measuremets | ADU |
| REJECTION_THRESHOLD | float | The threshold rejecting outlying pixels | |
| SOURCE_CODE_VERSION | int | The version of the source code | |
