image overlap message for exposure 3 of trigger 1513316
uvot_overlap.pl vrs. 2010-12-20b fem started at 260925d13h44m13s662375usUT
The observation of trigger 1513316 started 2026-09-25T07:28:14.2
Examining file ./1513316_g912_uvot_sky_image.fits
The exposure ID is 812014094
The exposure time is 149.868 (seconds)
The filter is WHITE.
*** Warning -- found 16234 null pixels in the image.
The uvot region is centered at (132.4699,24.9674) with a roll angle of 110.7
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (132.4620,24.9710) with a radius of 3.000 arc min
This is 0.480 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 7.17 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (132.4568,24.9113) with a radius of 0.043 arc min
This is 3.440 arc min from the center of the uvot region
The area of the XRT error circle is 0.006 sq. arc min
The UVOT/XRT overlap is 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 3 of trigger 1513316
find_uvot_ag.pl vrs. 2023-04-25a fem started at 260925d13h44m42s883379usUT
Observation start time is 2026-09-25T07:28:14.2
Examining file ./1513316_g912_uvot_catalog_image.fits
The exposure ID is 812014094
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 1 detected source(s) for 1513316_g912
Aspect correction adds 0.00082 degrees (0.197 sec of time = 2.68 arc sec) to RA
Aspect correction adds -0.00231 degrees (-8.33 arcsec) to Dec
Total aspect correction is 8.75 arcsec
Star catalogs centered at 132.4805 , 24.9798 with radius 2.00 arc min.
n_usno: 15 n_gsc: 13
*** WARNING -- XRT position is outside star catalog search region.
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 1 matched entries is 0.336" for 1513316_g912
Mean and std. dev of mag. difference (MAG_DELTA) are 0.523 and 0.000 for 1513316_g912
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1513316_g912.
Acceptable entries have no ID, XRT distances < 6.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
Magnitude criteria will be applied later.
BAT distances are from RA=132.4620 (08:49:50.88) DEC=24.9710 (+24:58:15.6)
XRT distances are from RA=132.4568 (08:49:49.63) DEC=24.9113 (+24:54:40.7)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 46872.707 counts in the bkg source region of 1312.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 35.726 counts/pixel (5-sig UL in 4" is 19.41 mag) for 1513316_g912
Do not compute counts in XRT region because position is too far from center.
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 19.96, XRT distances < 6.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1513316_812014094_260925d13h44m42s883379usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(132.4699,24.9674,45")
image paragraph message for exposure 3 of trigger 1513316
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB260925 (Swift/BAT trigger 1513316) at 07:13:01 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 878 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 0.039.
------- notes for trigger 1513316 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 260925d13h44m49s158041usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1513316
-expid=812014094 -meonly -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1513316/
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.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 812014094.23166 or about 2026:268:07:28:09 UT
Found 464 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 81 sources in
srclist catalog. Found 45 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 1 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 19.96 mag. Found 13 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 2% of the
Genie image region. The XRT position was OUTSIDE the star catalog search
region. The Genie image is INCOMPLETE with 16234 null pixels.
Genie image analysis:
Found 46872.7 counts in the large background region of 1312.0 pixels or a rate
of 35.726 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 19.23 mag. for a
4-arcsec aperture. The closest srclist source has ra= 132.4545 dec= 24.9178
mag=19.38 sep=24.50". The closest Genie source has ra= 132.4805 dec= 24.9798
mag=14.35 sep=258.42".
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?
812014094 877 WHITE srclist found no candidates.
812014094 877 WHITE image found no candidates.
List afterglow candidates for other finding charts.
812013335 118 WHITE srclist found no candidates.
812013335 118 WHITE image found no candidates.
812013493 276 U srclist found no candidates.
812013493 276 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 24.91131
GRB_ERROR: 6.5
GRB_RA: 132.45679
IMAGE_START_TIME: 07:28:09
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT