Welcome to the DESI Data Model!

The DESI Data Tree

DESI data are grouped broadly by category, using environment variables to define the base directory under which files of that category are kept. These variables have a standard location relative to $DESI_ROOT, but code uses these variables so that one can swap out different input/output locations for testing.

Imaging data and their catalogs are documented separately by the Legacy Survey.

Indices and Tables