| 1 | Unused |
| 2 | Ellipse fit skipped; galaxy classified as too-small type REX (REX_TOOSMALL) |
| 4 | Ellipse fit skipped; galaxy classified as too-small type EXP, DEV, or SER (NOTREX_TOOSMALL) |
| 8 | Ellipse fitting was attempted but failed (FAILED) |
| 16 | Ellipse fitting was not attempted (NOTFIT). In SGA-2020 only 27 galaxies in seven unique groups have this bit set; see the Known Issues |
| 32 | Ellipse-fitting results were rejected based on visual inspection (REJECTED) |