The exposure request number within a single activity is 5 characters long and is included in the observation ID.
| Attribute | Value |
|---|---|
| data type | string |
| enumerated Values | not defined |
| units | |
| example | 00001 |
| default value | |
| special processing | VALUE_REQUIRED |
| source | Science Image Header |
| software source | |
| calculation | |
| DB destination | ['ScienceCommon.exposure'] |
| data type in DB | int |
| instrument | Multiple |
| mode | All |
| product level | 1a |
| FITS hdu | PRIMARY |
| FITS header section | Observation identifiers |