Quality information in VO Catalogs
SDSS Catalogue, Release 12
We use the quality information in the Q flag provided by the SDSS-DR12 catalogue in Vizier.
We consider Q ∈ (2,3) as good quality for all SDSS bands. Bad otherwise. That is:
- Q < 2 → SLOAD/SDSS.*: bad
See the catalogue description in
(you can also see a local copy
if the link does not work).