| Attribute name | Attribute type | Docstring | Unit | 
| ESO_QC_AMPL_SLICEj_THRU2 | float | Slice j throughput compared to photodiode 2 | % | 
| ESO_QC_AMPL_THRUa | float | Channel throughput compared to photodiode a | % | 
| 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 |  | 
| parameter_a | int | pico amplifier, id a, regexp [0-9]+ |  | 
| parameter_j | int | slice, id j, regexp [0-9]+ |  |