| 1 | Bit retired from use (RETIRED) |
| 2 | IFU does not reach target depth (BADDEPTH) |
| 4 | Bad sky subtraction in one or more frames (SKYSUBBAD) |
| 8 | High scattered light in one or more frames (HIGHSCAT) |
| 16 | Bad astrometry in one or more frames (BADASTROM) |
| 32 | LSF varies significantly between component spectra (VARIABLELSF) |
| 64 | Omega greater than threshhold in one or more sets (BADOMEGA) |
| 128 | One or more sets are bad (BADSET) |
| 256 | Bad flux calibration (BADFLUX) |
| 512 | PSF estimate may be bad (BADPSF) |
| 1024 | Many dead fibers (MANYDEAD) |
| 2048 | Bit retired, moved into MASTAR_QUAL instead (RETIRED2) |
| 4096 | Blowtorch artifact in one or more frames (BLOWTORCH) |
| 8192 | Severe blowtorch artifact (SEVEREBT) |
| 16384 | Cube slightly unusual in some way but good for most science (UNUSUAL) |
| 32768 | |
| 65536 | |
| 131072 | |
| 262144 | |
| 524288 | |
| 1048576 | |
| 2097152 | |
| 4194304 | |
| 8388608 | |
| 16777216 | |
| 33554432 | |
| 67108864 | |
| 134217728 | |
| 268435456 | |
| 536870912 | |
| 1073741824 | Critical failure in one or more frames (CRITICAL) |