Iron VAC (DR1)¶
Overview¶
This page describes the Iron value-added catalog, which will be publicly
released as part of the DESI Data Release 1 (DESI/DR1) sometime in 2024
(exact date TBD).
Please refer to the Acknowledgments section for the conditions for using this VAC.
Data Content & Access¶
Data from the Iron VAC can be accessed at any of the following links:
Data url |
https://data.desi.lbl.gov/public/dr1/vac/dr1/fastspecfit/iron/v1.0 |
NERSC (for collaborators) |
/global/cfs/cdirs/desi/public/dr1/vac/dr1/fastspecfit/iron/v1.0 |
For more information regarding the content and organization of the VAC, please click on the following links:
Summary Statistics¶
The following table summarizes the size and number of targets in each merged catalog.
Note
The last catalog listed in the table is a super-merge of all the preceding catalogs, i.e., a merge over all surveys and programs.
fastspec-iron-cmx-other.fits |
11.5 MB |
2,761 |
fastspec-iron-main-backup.fits |
61.3 MB |
15,163 |
fastspec-iron-main-bright.fits |
25.5 GB |
6,445,915 |
fastspec-iron-main-dark.fits |
39.9 GB |
10,074,406 |
fastspec-iron-special-backup.fits |
2.38 MB |
552 |
fastspec-iron-special-bright.fits |
175 MB |
43,261 |
fastspec-iron-special-dark.fits |
60.5 MB |
14,953 |
fastspec-iron-special-other.fits |
172 MB |
42,064 |
fastspec-iron-sv1-backup.fits |
14 MB |
3,331 |
fastspec-iron-sv1-bright.fits |
524 MB |
126,649 |
fastspec-iron-sv1-dark.fits |
965 MB |
233,158 |
fastspec-iron-sv1-other.fits |
141 MB |
34,112 |
fastspec-iron-sv2-backup.fits |
593 KB |
105 |
fastspec-iron-sv2-bright.fits |
193 MB |
46,486 |
fastspec-iron-sv2-dark.fits |
218 MB |
52,682 |
fastspec-iron-sv3-backup.fits |
6.45 MB |
1,524 |
fastspec-iron-sv3-bright.fits |
1.08 GB |
265,291 |
fastspec-iron-sv3-dark.fits |
2.4 GB |
592,165 |
fastspec-iron.fits |
73.4 GB |
17,994,578 |
The following table summarizes the number of QSO targets whose redshift has been updated using the procedure documented here.
Catalog |
Number of Targets |
Number with Corrected Redshifts |
|---|---|---|
fastspec-iron-cmx-other.fits |
2,771 |
63 |
fastspec-iron-special-dark.fits |
35,647 |
389 |
fastspec-iron-sv1-backup.fits |
3,683 |
119 |
fastspec-iron-sv1-bright.fits |
126,677 |
402 |
fastspec-iron-sv1-dark.fits |
235,881 |
4,656 |
fastspec-iron-sv1-other.fits |
34,150 |
372 |
fastspec-iron-sv2-backup.fits |
107 |
0 |
fastspec-iron-sv2-bright.fits |
46,510 |
151 |
fastspec-iron-sv2-dark.fits |
52,771 |
1,185 |
fastspec-iron-sv3-backup.fits |
1,564 |
32 |
fastspec-iron-sv3-bright.fits |
265,324 |
649 |
fastspec-iron-sv3-dark.fits |
592,394 |
5,973 |
fastspec-iron.fits |
1,397,479 |
13,991 |
Known Issues¶
This section documents any issues or problems which were identified with the VAC after its final release.
The tied amplitudes of [OII]7320,7330 doublet were reversed in the line fitting [#119].
To report projects or to request new features please open a ticket.