| Attribute name | Attribute type | Docstring | Unit |
| file_deleted | int | Switch to indicate if file has been deleted from the data server(s) | |
| filename | str | The name of the associated file | |
| globalname | str | The name used to store and retrieve file to and from Storage | |
| muserun | MuseRun | The object was created during this MuseRun | |
| 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 | |
| pixtable_reduced | PIXTABLE_REDUCED | instance of PIXTABLE_REDUCED, group raw, min 1, max -1 | |
| process_params | recipe_scipost_subtract_sky_simple | Processing parameters recipe_scipost_subtract_sky_simple | |
| sky_spectrum | SKY_SPECTRUM | instance of SKY_SPECTRUM, group calib, min 1, max 1 | |