===== EXPID ===== | $DESI_SPECTRO_DATA/NIGHT/EXPID | Default $DESI_ROOT/spectro/data/NIGHT/EXPID Raw data for each exposure of the DESI instrument. ``NIGHT`` is the night of observation in YYYYMMDD format. The "night" roles over at noon local time, so all data taken between sunset and sunrise belong to the same night (i.e. the date of the sunset). ``EXPID`` is the 8-digit zero-padded exposure ID. Each exposure id (expid) generates multiple files: .. toctree:: :maxdepth: 1 centroids-{expid}.json : Guide camera centroids coordinates-{expid}.fits : Coordinates file desi-{expid}.fits.fz : Raw data etc-{expid}.json : Exposure Time Calculator (ETC) analysis fiberassign-{tileid}.fits.gz : Table of which fibers were assigned to which targets fibermap-{expid}.fits : Table of which fibers were assigned to which targets (*obsolete*) focus-{expid}.fits.fz : Placeholder for focus GFA raw data fvc-{expid}.fits.fz : Fiber View Camera data fvc-primary-{expid}.fits : Fiber View Camera data FVC-measure-{expid}.fits : Fiber View Camera data gfa-{expid}.fits : GFA file guide-{expid}.fits.fz : Placeholder for guide GFA raw data guide-rois-{expid}.fits.fz : Placeholder for guide GFA raw data manifest_{expid}.json : Manifest file used in early commissioning pm-{expid}.fits : Platemaker data request-{expid}.json : Commands used to initiate an exposure sky-{expid}.fits.fz : Placeholder for guide GFA raw data