hpixexp-SURVEY-PROGRAM-PIXNUM

Summary:

Auxilliary file listing exposures that contribute to spectra in a HEALPixel.

Naming Convention:

hpixexp-SURVEY-PROGRAM-PIXNUM.csv, where SURVEY is e.g. main or sv1, PROGRAM is e.g. bright or dark and PIXNUM is the HEALPixel number.

Regex:

hpixexp-(cmx|main|special|sv1|sv2|sv3)-(backup|bright|dark|other)-[0-9]+\.csv

File Type:

CSV, 1 KB

Contents

The file should have these columns:

Name	Type	Description
NIGHT	int	Night of observation (YYYYMMDD) starting at local noon before observations start
EXPID	int	DESI Exposure ID number
TILEID	int	Unique DESI tile ID
SURVEY	char[*]	Survey name
PROGRAM	char[*]	DESI program type - BRIGHT, DARK, BACKUP, OTHER
SPECTRO	int	Spectrograph number [0-9]
HEALPIX	int	HEALPixel containing this location at NSIDE=64 in the NESTED scheme