| creation_date | datetime | The datetime this objects was created | |
| ESO_QC_EXPALIGN_BKG_MAD | float | Median absolute deviation of the background pixels. | |
| ESO_QC_EXPALIGN_BKG_MEDIAN | float | Median value of background pixels. | |
| ESO_QC_EXPALIGN_NDET | int | Number of detected sources. | |
| ESO_QC_EXPALIGN_SRC_POSITIONS | str | Origin of the source positions. | |
| ESO_QC_EXPALIGN_THRESHOLD | float | Detection threshold used for detecting sources. | |
