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IMAGE_STATUS: Sky and instrument conditions of SDSS image
| Bit name | Binary digit | Description |
|---|---|---|
| CLEAR | 0 | Clear skies |
| CLOUDY | 1 | Cloudy skies (unphotometric) |
| UNKNOWN | 2 | Sky conditions unknown (unphotometric) |
| BAD_ROTATOR | 3 | Rotator problems (set score=0) |
| BAD_ASTROM | 4 | Astrometry problems (set score=0) |
| BAD_FOCUS | 5 | Focus bad (set score=0) |
| SHUTTERS | 6 | Shutter out of place (set score=0) |
| FF_PETALS | 7 | Flat-field petals out of place (unphotometric) |
| DEAD_CCD | 8 | CCD bad (unphotometric) |
| NOISY_CCD | 9 | CCD noisy (unphotometric) |