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tile 11 stuck positioners assigned different ra,dec on different exposures (both are wrong) #2359

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sbailey opened this issue Sep 6, 2024 · 5 comments
Open

tile 11 stuck positioners assigned different ra,dec on different exposures (both are wrong) #2359

sbailey opened this issue Sep 6, 2024 · 5 comments
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@sbailey
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sbailey commented Sep 6, 2024

Tile 11 observed on 20210505 exposures 87353 and 87354 had a set of stuck positioners that got assigned different TARGET_RA, TARGET_DEC for the two exposures.

From kibo/preproc/20210505/00087353/fibermap-00087353.fits

FIBER TARGETID     TARGET_RA           TARGET_DEC     FIBERSTATUS                               FIBERSTATUS_NAMES                              
                      deg                 deg                                                                                                  
int32  int64        float64             float64          int32                                        str77                                    
----- -------- ------------------ ------------------- ----------- -----------------------------------------------------------------------------
  367  -110432 200.54410769651886 -50.326107696518925         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 1763  -113503 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION
 1787  -113505 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION
 1868  -113510 200.54410769651886 -50.326107696518925         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 1991  -113471 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION
 2132  -114070 200.54410769651886 -50.326107696518925         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 2513  -115063 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION
 3094  -116332 200.54410769651886 -50.326107696518925         259                                    UNASSIGNED,STUCKPOSITIONER,MISSINGPOSITION
 3520  -117035 200.54410769651886 -50.326107696518925         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 3587  -117431 200.54410769651886 -50.326107696518925         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 3634  -117520 200.54410769651886 -50.326107696518925         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 3668  -117344 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION
 3757  -117377 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION
 3788  -117182 200.54410769651886 -50.326107696518925         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 4420  -118273 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION
 4625  -119281 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION
 4932  -119454 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION
 4937  -119458 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION
 4941  -119207 200.54410769651886 -50.326107696518925         267                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED,MISSINGPOSITION

From kibo/preproc/20210505/00087354/fibermap-00087354.fits

FIBER TARGETID TARGET_RA TARGET_DEC FIBERSTATUS                               FIBERSTATUS_NAMES                              
                  deg       deg                                                                                              
int32  int64    float64   float64      int32                                        str77                                    
----- -------- --------- ---------- ----------- -----------------------------------------------------------------------------
  367  -110432       0.0        0.0         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 1763  -113503       0.0        0.0        1035                            UNASSIGNED,STUCKPOSITIONER,RESTRICTED,POORPOSITION
 1787  -113505       0.0        0.0         523                             UNASSIGNED,STUCKPOSITIONER,RESTRICTED,BADPOSITION
 1868  -113510       0.0        0.0         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 1991  -113471       0.0        0.0          11                                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED
 2132  -114070       0.0        0.0         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 2513  -115063       0.0        0.0          11                                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED
 3094  -116332       0.0        0.0         515                                        UNASSIGNED,STUCKPOSITIONER,BADPOSITION
 3520  -117035       0.0        0.0         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 3587  -117431       0.0        0.0         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 3634  -117520       0.0        0.0         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 3668  -117344       0.0        0.0         523                             UNASSIGNED,STUCKPOSITIONER,RESTRICTED,BADPOSITION
 3757  -117377       0.0        0.0          11                                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED
 3788  -117182       0.0        0.0         783 UNASSIGNED,STUCKPOSITIONER,BROKENFIBER,RESTRICTED,MISSINGPOSITION,BADPOSITION
 4420  -118273       0.0        0.0          11                                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED
 4625  -119281       0.0        0.0         523                             UNASSIGNED,STUCKPOSITIONER,RESTRICTED,BADPOSITION
 4932  -119454       0.0        0.0         523                             UNASSIGNED,STUCKPOSITIONER,RESTRICTED,BADPOSITION
 4937  -119458       0.0        0.0          11                                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED
 4941  -119207       0.0        0.0          11                                         UNASSIGNED,STUCKPOSITIONER,RESTRICTED

It looks like in one case the code is assigning default values to something way off the tile, and in another case assigning them to 0.0 (which I thought we had previously fixed...).

These are all bad targets and thus aren't particularly high priority, but we should understand the bookkeeping of this and get it standardized. It lead to the healpix bookeeping issue in #2354 due to different fibermaps of the same tile covering different healpix.
@sbailey sbailey added the cleanup label Sep 6, 2024
@sbailey sbailey mentioned this issue Sep 6, 2024
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@araichoor
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I had a look at that.

my understanding is:

  • for those early tiles, fiberassign didn t assign any coordinates to the stuck/broken fibers, so the fiberassign (TARGET_RA, TARGET_DEC) are nan;
  • in that case, the code falls back to platemaker (FIBER_RA, FIBER_DEC), which apparently assigns those default values to non-valid coordinates: (200.54410769651886 -50.326107696518925); I guess that the dec=-50 means "this obviously is a non-real value", as desi cannot go that south;
  • then, the other thing here is that expid=87354 is a split exposure (i.e. same tileid=11 than expid=87353); apparently, in that case, platemaker doesn t provide those (FIBER_RA, FIBER_DEC) columns; in that case, I guess that the fibermap code ends up with (TARGET_RA, TARGET_DEC) = (0, 0).

I don t see an obvious way to fix that at the exposure level, as I guess the thing to do would be to use for expid=87354 the coordinates from expid=87353, but as the code is run per-exposure, one cannot play such games.
though, for the cumulative and healpix reductions, one could intercept that with a logic like: if there are split exposures, check the (TARGET_RA, TARGET_DEC) for negative TARGETIDs, and in case of discrepancy use the values of the first exposure.

the relevant part of the fibermap code should be:

desispec/py/desispec/io/fibermap.py

Lines 891 to 897 in abfec75

if ('FIBER_RA' in pm.colnames) and ('FIBER_DEC' in pm.colnames):
fibermap['FIBER_RA'] = pm['FIBER_RA']
fibermap['FIBER_DEC'] = pm['FIBER_DEC']
else:
log.error('No FIBER_RA or FIBER_DEC from platemaker')
fibermap['FIBER_RA'] = np.zeros(len(pm))
fibermap['FIBER_DEC'] = np.zeros(len(pm))

and

desispec/py/desispec/io/fibermap.py

Lines 991 to 999 in abfec75

# ADM if we have NaN values in TARGET_RA/TARGET_DEC,
# ADM e.g. from stuck positioners and early fiberassign like night 20210422 expid 86004,
# ADM replace with the FIBER_RA/FIBER_DEC values from platemaker.
fmcols = ["TARGET_RA", "TARGET_DEC"]
pmcols = ["FIBER_RA", "FIBER_DEC"]
for fmcol, pmcol in zip(fmcols, pmcols):
ii = np.isnan(fibermap[fmcol])
fibermap[fmcol][ii] = fibermap[pmcol][ii]
log.info(f"Switching {np.sum(ii)} NaNs from {fmcol}->{pmcol} value")

if useful, illustrating what s in the coordinates files:

>>> d = Table(fitsio.read("/global/cfs/cdirs/desi/spectro/data/20210505/00087353/coordinates-00087353.fits","DATA"))
>>> d.colnames
['PETAL_LOC', 'DEVICE_LOC', 'POS_Q', 'POS_S', 'POS_FLAGS', 'POS_X', 'POS_Y', 'TARGET_RA', 'TARGET_DEC', 'FA_X', 'FA_Y', 'FA_FIBER', 'REQ_Q', 'REQ_S', 'REQ_X', 'REQ_Y', 'EXP_Q_0', 'EXP_S_0', 'FLAGS_EXP_0', 'EXP_X_0', 'EXP_Y_0', 'FVC_X_0', 'FVC_Y_0', 'FLAGS_FVC_0', 'CNT_X_0', 'CNT_Y_0', 'FLAGS_CNT_0', 'CNT_MAG_0', 'CNT_ERR_0', 'DX_0', 'DY_0', 'FPA_X_0', 'FPA_Y_0', 'FLAGS_COR_0', 'REQ_X_0', 'REQ_Y_0', 'OFFSET_0', 'EXP_Q_1', 'EXP_S_1', 'FLAGS_EXP_1', 'EXP_X_1', 'EXP_Y_1', 'FVC_X_1', 'FVC_Y_1', 'FLAGS_FVC_1', 'CNT_X_1', 'CNT_Y_1', 'FLAGS_CNT_1', 'CNT_MAG_1', 'CNT_ERR_1', 'DX_1', 'DY_1', 'FPA_X_1', 'FPA_Y_1', 'FLAGS_COR_1', 'REQ_X_1', 'REQ_Y_1', 'OFFSET_1', 'FIBER_RA', 'FIBER_DEC', 'FIBER_X', 'FIBER_Y', 'FIBER_DX', 'FIBER_DY', 'FIBER_OFFSET']
>>> d["FA_X", "FA_Y", "FIBER_RA", "FIBER_DEC"][d["FA_FIBER"] == 1763]
<Table length=1>
  FA_X    FA_Y       FIBER_RA           FIBER_DEC     
float32 float32      float64             float64      
------- ------- ------------------ -------------------
    nan     nan 200.54410769651886 -50.326107696518925
>>> d = Table(fitsio.read("/global/cfs/cdirs/desi/spectro/data/20210505/00087354/coordinates-00087354.fits","DATA"))
>>> d.colnames
['PETAL_LOC', 'DEVICE_LOC', 'POS_Q', 'POS_S', 'POS_FLAGS', 'POS_X', 'POS_Y', 'TARGET_RA', 'TARGET_DEC', 'FA_X', 'FA_Y', 'FA_FIBER', 'FOR_DX_1', 'FOR_DY_1', 'FOR_X_1', 'FOR_Y_1', 'FLAGS_FOR_1', 'FOR_OFFSET_1', 'EXP_Q_0', 'EXP_S_0', 'FLAGS_EXP_0', 'EXP_X_0', 'EXP_Y_0', 'FVC_X_0', 'FVC_Y_0', 'FLAGS_FVC_0', 'CNT_X_0', 'CNT_Y_0', 'FLAGS_CNT_0', 'CNT_MAG_0', 'CNT_ERR_0', 'DX_0', 'DY_0', 'FPA_X_0', 'FPA_Y_0', 'FLAGS_COR_0', 'REQ_X_0', 'REQ_Y_0', 'OFFSET_0']
>>> d["FA_X", "FA_Y", "FIBER_RA", "FIBER_DEC"][d["FA_FIBER"] == 1763]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/global/common/software/desi/perlmutter/desiconda/20240425-2.2.0/conda/lib/python3.10/site-packages/astropy/table/table.py", line 2071, in __getitem__
    [self[x] for x in item], copy_indices=self._copy_indices
  File "/global/common/software/desi/perlmutter/desiconda/20240425-2.2.0/conda/lib/python3.10/site-packages/astropy/table/table.py", line 2071, in <listcomp>
    [self[x] for x in item], copy_indices=self._copy_indices
  File "/global/common/software/desi/perlmutter/desiconda/20240425-2.2.0/conda/lib/python3.10/site-packages/astropy/table/table.py", line 2062, in __getitem__
    return self.columns[item]
  File "/global/common/software/desi/perlmutter/desiconda/20240425-2.2.0/conda/lib/python3.10/site-packages/astropy/table/table.py", line 265, in __getitem__
    return OrderedDict.__getitem__(self, item)
KeyError: 'FIBER_RA'

@araichoor
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and a side-comment:
those (TARGET_RA, TARGET_DEC) ~ (200, -50) from platemaker probably happened for other tiles.
I m not familiar with DESINAME is used / propagated downstream, but it could be that all such cases would end up with the same DESINAME?

if useful, here s a check of the number of rows with abs(TARGET_DEC + 50) < 1 in the ztile-*fits files (same results for the zpix-*fits files):

>>> for fn in sorted(glob("/global/cfs/cdirs/desi/spectro/redux/kibo/zcatalog/v1/ztile-*fits")):
...     decs = fitsio.read(fn, "ZCATALOG", columns="TARGET_DEC")
...     print((np.abs(decs + 50) < 1).sum(), "\t", os.path.basename(fn))
... 
0 	 ztile-cmx-other-cumulative.fits
0 	 ztile-main-backup-cumulative.fits
0 	 ztile-main-bright-cumulative.fits
0 	 ztile-main-dark-cumulative.fits
0 	 ztile-special-backup-cumulative.fits
0 	 ztile-special-bright-cumulative.fits
0 	 ztile-special-dark-cumulative.fits
198 	 ztile-sv1-backup-cumulative.fits
0 	 ztile-sv1-bright-cumulative.fits
0 	 ztile-sv1-dark-cumulative.fits
0 	 ztile-sv1-other-cumulative.fits
15 	 ztile-sv2-backup-cumulative.fits
270 	 ztile-sv2-bright-cumulative.fits
245 	 ztile-sv2-dark-cumulative.fits
575 	 ztile-sv3-backup-cumulative.fits
2740 	 ztile-sv3-bright-cumulative.fits
3246 	 ztile-sv3-dark-cumulative.fits

@araichoor
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@sbailey: for info, I m running separate few sanity checks on kibo, and I stumbled on those again, I believe.

I m parsing the healpix redrock files (EXT_FIBERMAP) extension:
I see a fair number of sv1 (backup), sv2 (backup, bright, dark), and sv3 (backup, bright, dark) files which have, for all rows, np.nan for PLATE_RA, PLATE_DEC.
spot-checking a few, those only contain those TARGET_DEC~-50 fibers; i.e. I understand the code "group" those in the healpix pixels at dec ~ -50.
I can provide a list if useful.

@araichoor
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araichoor commented Sep 10, 2024 •
edited
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for completeness / book-keeping, here s a list of those healpix files (identified with np.nan for PLATE_RA or PLATE_DEC):

# NROW_NAN NROW_ALL FN
#
10 	 10 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv1/backup/380/38007/redrock-sv1-backup-38007.fits
15 	 15 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv1/backup/432/43218/redrock-sv1-backup-43218.fits
25 	 25 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv1/backup/421/42103/redrock-sv1-backup-42103.fits
8 	 8 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv1/backup/473/47376/redrock-sv1-backup-47376.fits
85 	 85 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv1/backup/418/41851/redrock-sv1-backup-41851.fits
70 	 70 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv1/backup/421/42172/redrock-sv1-backup-42172.fits
40 	 40 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv1/backup/473/47314/redrock-sv1-backup-47314.fits
68 	 68 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv1/backup/476/47629/redrock-sv1-backup-47629.fits
25 	 25 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv1/backup/459/45947/redrock-sv1-backup-45947.fits
#
15 	 15 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/backup/419/41952/redrock-sv2-backup-41952.fits
#
60 	 60 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/419/41952/redrock-sv2-bright-41952.fits
105 	 105 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/419/41931/redrock-sv2-bright-41931.fits
60 	 60 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/419/41927/redrock-sv2-bright-41927.fits
45 	 45 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/418/41851/redrock-sv2-bright-41851.fits
30 	 30 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/418/41852/redrock-sv2-bright-41852.fits
105 	 105 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/425/42507/redrock-sv2-bright-42507.fits
30 	 30 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/425/42528/redrock-sv2-bright-42528.fits
45 	 45 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/419/41934/redrock-sv2-bright-41934.fits
90 	 90 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/425/42508/redrock-sv2-bright-42508.fits
45 	 45 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/418/41853/redrock-sv2-bright-41853.fits
75 	 75 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/419/41936/redrock-sv2-bright-41936.fits
15 	 15 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/bright/418/41847/redrock-sv2-bright-41847.fits
#
14 	 14 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/425/42509/redrock-sv2-dark-42509.fits
30 	 30 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/419/41934/redrock-sv2-dark-41934.fits
28 	 28 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/419/41927/redrock-sv2-dark-41927.fits
15 	 15 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/425/42514/redrock-sv2-dark-42514.fits
30 	 30 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/425/42507/redrock-sv2-dark-42507.fits
14 	 14 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/425/42503/redrock-sv2-dark-42503.fits
30 	 30 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/419/41931/redrock-sv2-dark-41931.fits
15 	 15 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/425/42528/redrock-sv2-dark-42528.fits
15 	 15 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/425/42508/redrock-sv2-dark-42508.fits
30 	 30 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/418/41853/redrock-sv2-dark-41853.fits
15 	 15 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/419/41936/redrock-sv2-dark-41936.fits
15 	 15 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/418/41852/redrock-sv2-dark-41852.fits
14 	 14 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/418/41851/redrock-sv2-dark-41851.fits
26 	 26 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/419/41952/redrock-sv2-dark-41952.fits
14 	 14 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv2/dark/418/41847/redrock-sv2-dark-41847.fits
#
110 	 110 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/422/42252/redrock-sv3-backup-42252.fits
46 	 46 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/459/45947/redrock-sv3-backup-45947.fits
14 	 14 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/421/42103/redrock-sv3-backup-42103.fits
19 	 19 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/473/47307/redrock-sv3-backup-47307.fits
72 	 72 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/422/42258/redrock-sv3-backup-42258.fits
42 	 42 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/432/43218/redrock-sv3-backup-43218.fits
67 	 67 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/421/42172/redrock-sv3-backup-42172.fits
77 	 77 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/418/41847/redrock-sv3-backup-41847.fits
78 	 78 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/418/41851/redrock-sv3-backup-41851.fits
34 	 34 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/473/47367/redrock-sv3-backup-47367.fits
133 	 133 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/425/42503/redrock-sv3-backup-42503.fits
47 	 47 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/472/47223/redrock-sv3-backup-47223.fits
15 	 15 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/473/47312/redrock-sv3-backup-47312.fits
31 	 31 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/backup/472/47227/redrock-sv3-backup-47227.fits
#
98 	 98 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/422/42247/redrock-sv3-bright-42247.fits
213 	 213 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/418/41851/redrock-sv3-bright-41851.fits
252 	 252 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/422/42258/redrock-sv3-bright-42258.fits
159 	 159 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/421/42103/redrock-sv3-bright-42103.fits
34 	 34 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/422/42273/redrock-sv3-bright-42273.fits
289 	 289 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/459/45947/redrock-sv3-bright-45947.fits
325 	 325 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/425/42503/redrock-sv3-bright-42503.fits
277 	 277 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/472/47223/redrock-sv3-bright-47223.fits
178 	 178 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/421/42172/redrock-sv3-bright-42172.fits
77 	 77 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/422/42253/redrock-sv3-bright-42253.fits
215 	 215 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/473/47312/redrock-sv3-bright-47312.fits
225 	 225 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/472/47227/redrock-sv3-bright-47227.fits
191 	 191 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/473/47367/redrock-sv3-bright-47367.fits
128 	 128 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/422/42256/redrock-sv3-bright-42256.fits
220 	 220 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/422/42252/redrock-sv3-bright-42252.fits
200 	 200 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/418/41847/redrock-sv3-bright-41847.fits
95 	 95 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/473/47307/redrock-sv3-bright-47307.fits
19 	 19 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/422/42251/redrock-sv3-bright-42251.fits
226 	 226 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/432/43218/redrock-sv3-bright-43218.fits
218 	 218 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/bright/476/47650/redrock-sv3-bright-47650.fits
#
76 	 76 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/422/42251/redrock-sv3-dark-42251.fits
57 	 57 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/422/42273/redrock-sv3-dark-42273.fits
130 	 130 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/422/42253/redrock-sv3-dark-42253.fits
246 	 246 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/418/41847/redrock-sv3-dark-41847.fits
266 	 266 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/425/42503/redrock-sv3-dark-42503.fits
314 	 314 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/418/41851/redrock-sv3-dark-41851.fits
276 	 276 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/472/47227/redrock-sv3-dark-47227.fits
212 	 212 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/472/47223/redrock-sv3-dark-47223.fits
361 	 361 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/422/42258/redrock-sv3-dark-42258.fits
409 	 409 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/421/42172/redrock-sv3-dark-42172.fits
417 	 417 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/476/47650/redrock-sv3-dark-47650.fits
346 	 346 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/432/43218/redrock-sv3-dark-43218.fits
291 	 291 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/473/47312/redrock-sv3-dark-47312.fits
250 	 250 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/473/47367/redrock-sv3-dark-47367.fits
57 	 57 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/473/47307/redrock-sv3-dark-47307.fits
403 	 403 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/421/42103/redrock-sv3-dark-42103.fits
217 	 217 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/422/42252/redrock-sv3-dark-42252.fits
346 	 346 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/422/42256/redrock-sv3-dark-42256.fits
191 	 191 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/422/42247/redrock-sv3-dark-42247.fits
398 	 398 	 /global/cfs/cdirs/desi/spectro/redux/kibo/healpix/sv3/dark/459/45947/redrock-sv3-dark-45947.fits

@araichoor
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and here s the sky distribution of the kibo tilepix.fits file (where one can see those at dec ~ -50):
tmp

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@sbailey @araichoor