Fuji VAC (EDR)¶
Overview¶
This page describes the Fuji
value-added catalog, which will be publicly
released as part of the DESI Early Data Release (DESI/EDR) in
late-summer 2023.
Please refer to the Acknowledgments section for the conditions for using this VAC.
Note
We only document the v2.0 version of this VAC; the v1.0 version is publicly accessible but has been deprecated and is not documented further.
Data Content & Access¶
Data from the Fuji
VAC can be accessed at any of the following links:
Data url |
https://data.desi.lbl.gov/desi/spectro/fastspecfit/fuji/v2.0 |
Interactive web-app |
|
NERSC (for collaborators) |
|
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.
File Name |
File Size |
Number of Targets |
---|---|---|
fastspec-fuji-cmx-other.fits |
11.6 MB |
2,771 |
fastspec-fuji-special-dark.fits |
145 MB |
35,647 |
fastspec-fuji-sv1-backup.fits |
15.5 MB |
3,683 |
fastspec-fuji-sv1-bright.fits |
524 MB |
126,677 |
fastspec-fuji-sv1-dark.fits |
976 MB |
235,881 |
fastspec-fuji-sv1-other.fits |
141 MB |
34,150 |
fastspec-fuji-sv2-backup.fits |
602 KB |
107 |
fastspec-fuji-sv2-bright.fits |
193 MB |
46,510 |
fastspec-fuji-sv2-dark.fits |
218 MB |
52,771 |
fastspec-fuji-sv3-backup.fits |
6.62 MB |
1,564 |
fastspec-fuji-sv3-bright.fits |
1.08 GB |
265,324 |
fastspec-fuji-sv3-dark.fits |
2.41 GB |
592,394 |
fastspec-fuji.fits |
5.7 GB |
1,397,479 |
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-fuji-cmx-other.fits |
2,771 |
56 |
fastspec-fuji-special-dark.fits |
35,647 |
311 |
fastspec-fuji-sv1-backup.fits |
3,683 |
100 |
fastspec-fuji-sv1-bright.fits |
126,677 |
64 |
fastspec-fuji-sv1-dark.fits |
235,881 |
3,749 |
fastspec-fuji-sv1-other.fits |
34,150 |
168 |
fastspec-fuji-sv2-backup.fits |
107 |
0 |
fastspec-fuji-sv2-bright.fits |
46,510 |
8 |
fastspec-fuji-sv2-dark.fits |
52,771 |
1,019 |
fastspec-fuji-sv3-backup.fits |
1,564 |
0 |
fastspec-fuji-sv3-bright.fits |
265,324 |
132 |
fastspec-fuji-sv3-dark.fits |
592,394 |
3,397 |
fastspec-fuji.fits |
1,397,479 |
9,004 |
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].
The photometry for approximately 1% of targets is not properly propagated into the output metadata table [#121].
The signal-to-noise ratio of extremely narrow lines can be under-estimated [#124].
There is an unphysical break in the derived stellar masses [#125].
The photometry for a small fraction of SV1 targets is incorrect [#129].
To report projects or to request new features please open a ticket.