pota-OBSCON.fits
- Summary:
This file includes all reachable, as determined by the DESI fiberassign software, sky coordinates of randoms matching the footprint of DESI target samples as well as information about collisions
- Naming Convention:
pota-{OBSCON}.fits, where {OBSCON} can be DARK or BRIGHT- Regex:
pota-(BRIGHT|DARK)\.fits- File Type:
FITS, 2 GB
Contents
Number |
EXTNAME |
Type |
Contents |
|---|---|---|---|
IMAGE |
Empty |
||
LSS |
BINTABLE |
Catalog data |
FITS Header Units
HDU0
This HDU has no non-standard required keywords.
Empty HDU.
HDU1
EXTNAME = LSS
All reachable randoms for the given realization in the directory (18 randoms) for the given OBSCON (DARK or BRIGHT)
Required Header Keywords
Required Header Keywords Table
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
49 |
int |
width of table in bytes |
NAXIS2 |
49152819 |
int |
number of rows in table |
DESIDR |
dr1 |
str |
DESI Data Release |
Required Data Table Columns
Name |
Type |
Units |
Description |
|---|---|---|---|
LOCATION |
int64 |
Location on the focal plane PETAL_LOC*1000 + DEVICE_LOC |
|
FIBER |
int64 |
Fiber ID on the CCDs [0-4999] |
|
TARGETID |
int64 |
Unique DESI target ID |
|
RA |
float64 |
deg |
Barycentric Right Ascension in ICRS |
DEC |
float64 |
deg |
Barycentric declination in ICRS |
TILEID |
int64 |
Unique DESI tile ID |
|
COLLISION |
logical |
Boolean for whether given potential assignment had a fiber collision with any keep-out zone |