srclist overlap message for exposure 2 of trigger 1444088
uvot_overlap.pl vrs. 2010-12-20b fem started at 260127d21h37m36s728111usUT
The observation of trigger 1444088 started 2026-01-27T18:05:39.9
Examining file ./1444088_g904_uvot_sky_srclist.fits
The exposure ID is 791229939
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (231.8859,6.7600) with a roll angle of 109.8
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (231.8570,6.7580) with a radius of 3.000 arc min
This is 1.725 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The UVOT/BAT overlap is 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (231.8794,6.7621) with a radius of 0.035 arc min
This is 0.409 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1444088
find_uvot_ag.pl vrs. 2023-04-25a fem started at 260127d21h37m48s363088usUT
Observation start time is 2026-01-27T18:05:39.9
Examining file ./1444088_g904_uvot_catalog_srclist.fits
The exposure ID is 791229939
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 124 detected source(s) for 1444088_g904
Aspect correction adds 0.00062 degrees (0.149 sec of time = 2.22 arc sec) to RA
Aspect correction adds -0.00147 degrees (-5.30 arcsec) to Dec
Total aspect correction is 5.75 arcsec
Star catalogs centered at 231.9017 , 6.7587 with radius 8.27 arc min.
n_usno: 830 n_gsc: 760
*** WARNING -- bright star catalog has 5 entries brighter than 12 mag
The brightest has mag 9.94764
RA DEC Mag Color
bright star 0: 231.93341 (15:27:44.02) 6.80412 (+06:48:14.8) 9.95 USNO-V
bright star 1: 231.80677 (15:27:13.62) 6.72676 (+06:43:36.3) 10.22 USNO-V
bright star 2: 231.93839 (15:27:45.21) 6.66164 (+06:39:41.9) 11.00 USNO-V
bright star 3: 232.01857 (15:28:04.46) 6.76793 (+06:46:04.6) 10.66 USNO-V
bright star 4: 231.83082 (15:27:19.40) 6.85929 (+06:51:33.5) 11.62 USNO-V
Mean distance difference (CAT_DELTA) for 52 matched entries is 0.662" for 1444088_g904
Mean and std. dev of mag. difference (MAG_DELTA) are 1.109 and 0.631 for 1444088_g904
Found 72 entries without IDs and 0 entries that are acceptable afterglow candidates for 1444088_g904.
Acceptable entries have no ID, XRT distances < 5.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
65 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=231.8570 (15:27:25.68) DEC= 6.7580 (+06:45:28.8)
XRT distances are from RA=231.8794 (15:27:31.05) DEC= 6.7621 (+06:45:43.7)
*** WARNING 58 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 19:
ra=231.87606 dec= 6.82583 +/- 1.1" mag=19.93+/-0.35 dist=229.6 REFID=121
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 5.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 2 of trigger 1444088
IMAGE PROBLEM: damaged image (negative pixel value)
------ Start for Possible Stand-alone Circular ----
In response to GRB260127 (Swift/BAT trigger 1444088) at 17:50:34 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 867 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. The 2.7'x2.7' sub-image processing
FAILED because of damaged image (negative pixel value). The 8'x8' region for
the list of sources generated on-board covers 100% of the XRT error circle. The
list of sources is typically complete to about 18 mag. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.048.
------- notes for trigger 1444088 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 260127d21h37m50s925893usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1444088
-expid=791229939 -meonly -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1444088/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
The Genie image appears to be DAMAGED with a min. value of -4.135825.
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 791229939.93976 or about 0000:11715:18:05:43 UT
Found 826 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 8% of the srclist region. Found 124 sources in
srclist catalog. Found 72 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 3 source(s) in Genie image catalog. Found 0 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.49 mag. Found 40 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 6% of the
Genie image region. The Genie image is INCOMPLETE with 1334 null pixels.
The closest srclist source has ra= 231.8796 dec= 6.7688 mag=16.23 sep=24.05".
The closest Genie source has ra= 231.8795 dec= 6.7688 mag=15.82 sep=23.88".
All AG candidates sorted by magnitude for the current finding chart.
(U/V/White SRCLIST mags < 17.5/17.5/18.5 are reliable. Mag > 18.5/18.5/19.5 are
not. Others are uncertain.)
(U/V/White Genie image mags < 18.0/18.0/19.0 are reliable. Mag > 19.0/19.0/20.0
are not. Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC--- -MAG/Limit Dist(") Source Asp.Corr?
791229939 867 WHITE srclist found no candidates.
791229939 867 WHITE image found no candidates.
List afterglow candidates for other finding charts.
791229285 213 WHITE srclist found no candidates.
791229285 213 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 6.76214
GRB_ERROR: 5.25
GRB_RA: 231.87937
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT