srclist overlap message for exposure 1 of trigger 1444088
uvot_overlap.pl vrs. 2010-12-20b fem started at 260127d21h37m35s867023usUT
The observation of trigger 1444088 started 2026-01-27T17:54:45.7
Examining file ./1444088_g250_uvot_sky_srclist.fits
The exposure ID is 791229285
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (231.8662,6.7565) with a roll angle of 109.8
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (231.8570,6.7580) with a radius of 3.000 arc min
This is 0.557 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 0.852 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 1 of trigger 1444088
find_uvot_ag.pl vrs. 2023-04-25a fem started at 260127d21h37m38s771529usUT
Observation start time is 2026-01-27T17:54:45.7
Examining file ./1444088_g250_uvot_catalog_srclist.fits
The exposure ID is 791229285
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 76 detected source(s) for 1444088_g250
Aspect correction adds 0.00086 degrees (0.207 sec of time = 3.09 arc sec) to RA
Aspect correction adds -0.00147 degrees (-5.30 arcsec) to Dec
Total aspect correction is 6.14 arcsec
Star catalogs centered at 231.8708 , 6.7469 with radius 5.74 arc min.
n_usno: 379 n_gsc: 340
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 9.94764
RA DEC Mag Color
bright star 0: 231.80677 (15:27:13.62) 6.72676 (+06:43:36.3) 10.22 USNO-V
bright star 1: 231.93341 (15:27:44.02) 6.80412 (+06:48:14.8) 9.95 USNO-V
Mean distance difference (CAT_DELTA) for 31 matched entries is 0.783" for 1444088_g250
Mean and std. dev of mag. difference (MAG_DELTA) are 1.303 and 1.502 for 1444088_g250
Found 46 entries without IDs and 2 entries that are acceptable afterglow candidates for 1444088_g250.
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.
44 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 60 per cent of entries have no IDs.
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1444088_g250 with 3x3 stamp
ra=231.88128 (15:27:31.51) dec=6.73510 (+06:44:06.4) +/- 1.1" mag=20.18+/-0.35
dist=97.6 REFID=74
*** The position of this source is inconsistent with the XRT position.
The position is 119.7 arc sec from the BAT position.
src: 3 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 22 in the list of sources is a candidate afterglow for 1444088_g250 with 3x3 stamp
ra=231.81242 (15:27:14.98) dec=6.73633 (+06:44:10.8) +/- 1.1" mag=20.31+/-0.35
dist=256.8 REFID=75
*** The position of this source is inconsistent with the XRT position.
The position is 177.4 arc sec from the BAT position.
src: 22 distr. of nearby unmatched sources: 0 0 0 0 5
Found 4 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
231.8174 6.7347 18.9 -1 USNO-B1 99.99 19.24 99.99
231.8174 6.7347 18.7 -1 GSC2.3 20.00 99.99 99.99
231.8110 6.7319 16.7 -1 GSC2.3 99.99 21.44 99.99
231.8070 6.7377 20.0 -1 GSC2.3 20.58 22.12 99.99
*** If XRT position is correct, then this is NOT the afterglow
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
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 1 of trigger 1444088
IMAGE PROBLEM: no overlap
------ 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 213 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. The 2.7'x2.7' sub-image covers none of
the XRT error circle. 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 260127d21h37m41s711722usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1444088
-expid=791229285 -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/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 791229285.74286 or about 0000:11715:17:54:49 UT
Found 375 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 7% of the srclist region. Found 76 sources in
srclist catalog. Found 46 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 2 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 20.64 mag. Found 38 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 5% of the
Genie image region. The Genie image is INCOMPLETE with 11689 null pixels.
Genie image analysis:
Found 38143.4 counts in the large background region of 3731.0 pixels or a rate
of 10.223 counts/pixel in a radius of 45.0 arcsec. Based on this background,
the typical 5-sigma UL at a random point in the Genie image is 19.91 mag. for a
4-arcsec aperture. The closest srclist source has ra= 231.8795 dec= 6.7688
mag=16.32 sep=23.88". The closest Genie source has ra= 231.8796 dec= 6.7687
mag=15.79 sep=23.77".
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?
791229285 213 WHITE srclist found no candidates.
791229285 213 WHITE image found no candidates.
List afterglow candidates for other finding charts.
791229939 867 WHITE srclist found no candidates.
791229939 867 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