| 0 | In PSF of bright star falling off coadd |
| 1 | In HyperLeda large galaxy |
| 2 | In 'big object' (M31 or Magellanic cloud) |
| 4 | Pixel may contain the centroid of a very bright star |
| 8 | crowdsource considers this pixel potentially affected by saturation |
| 16 | Pixel may contain nebulosity |
| 32 | Sources in this pixel will not be aggressively deblended |
| 64 | Candidate sources in this pixel must be 'sharp' to be optimized |