| Attribute name | Attribute type | Docstring | Unit |
|---|
| creation_date | datetime | The datetime this objects was created | |
| ESO_QC_SKY_THRESHOLD | float | Threshold in the white light considered as sky, used to create this mask | |
| object_id | oidtype | The object identifier
The object identifier is an attribute shared by all persistent
instances. It is the prime key, by which object identity is established | |
