srclist overlap message for exposure 1 of trigger 1278865
uvot_overlap.pl vrs. 2010-12-20b fem started at 250104d18h09m01s602609usUT
The observation of trigger 1278865 started 2025-01-03T15:47:28.2
Examining file ./1278865_g190_uvot_sky_srclist.fits
The exposure ID is 757612048
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (54.6447,-33.7784) with a roll angle of 227.4
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 (54.6510,-33.7720) with a radius of 3.000 arc min
This is 0.497 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 (54.6641,-33.7494) with a radius of 0.032 arc min
This is 1.990 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1278865
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250104d18h09m04s125027usUT
Observation start time is 2025-01-03T15:47:28.2
Examining file ./1278865_g190_uvot_catalog_srclist.fits
The exposure ID is 757612048
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 113 detected source(s) for 1278865_g190
Aspect correction adds -0.00083 degrees (-0.199 sec of time = -2.48 arc sec) to RA
Aspect correction adds -0.00054 degrees (-1.95 arcsec) to Dec
Total aspect correction is 3.15 arcsec
Star catalogs centered at 54.6504 , -33.7696 with radius 5.70 arc min.
n_usno: 199 n_gsc: 238
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.38852
RA DEC Mag Color
bright star 0: 54.65965 (03:38:38.32) -33.73078 (-33:43:50.8) 10.39 USNO-V
bright star 1: 54.58875 (03:38:21.30) -33.71454 (-33:42:52.4) 11.59 USNO-V
Mean distance difference (CAT_DELTA) for 26 matched entries is 0.908" for 1278865_g190
Mean and std. dev of mag. difference (MAG_DELTA) are 1.329 and 0.980 for 1278865_g190
Found 89 entries without IDs and 1 entries that are acceptable afterglow candidates for 1278865_g190.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
87 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=54.6510 (03:38:36.24) DEC=-33.7720 (-33:46:19.2)
XRT distances are from RA=54.6641 (03:38:39.39) DEC=-33.7494 (-33:44:58.0)
*** WARNING 78 per cent of entries have no IDs.
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1278865_g190 with 3x3 stamp
ra=54.66375 (03:38:39.30) dec=-33.74934 (-33:44:57.6) +/- 1.1" mag=19.78+/-0.35
dist=1.2 REFID=55
src: 1 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
54.6591 -33.7457 19.2 -1 GSC2.3 99.99 22.54 99.99
54.6629 -33.7441 19.0 -1 GSC2.3 99.99 22.60 99.99
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=54.66375 (03:38:39.30) dec=-33.74934 (-33:44:57.6) +/- 1.1" mag=19.78+/-0.35 dist=1.2 REFID=55
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",
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 1278865
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB250103 (Swift/BAT trigger 1278865) at 15:44:17 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 155 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 0.008.
------- notes for trigger 1278865 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250104d18h09m06s673785usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1278865
-expid=757612048 -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/1278865/
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 757612048.21332 or about 2025:004:15:47:23 UT
Found 238 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 113 sources in
srclist catalog. Found 89 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 4 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 20.99 mag. Found 49 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 5% of the
Genie image region.
Genie image analysis:
Found 33640.0 counts in the large background region of 6203.0 pixels or a rate
of 5.423 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 20.26 mag. for a
4-arcsec aperture.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 54.6638 dec= -33.7493 mag=19.78 sep=1.17".
The closest srclist source has ra= 54.6638 dec= -33.7493 mag=19.78 sep=1.17".
The closest Genie source has ra= 54.6636 dec= -33.7736 mag=18.89 sep=86.93".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 155 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 03:38:39.30 = 54.66375
DEC(J2000) = -33:44:57.6 = -33.74934
with a 90%-confidence error radius of about 1.10 arc sec. This position is 1.17
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.78 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.008.
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?
757612048 155 WHITE 54.66375 -33.74934 19.78/19.2 1.2 srclist Yes
757612048 155 WHITE image found no candidates.
List afterglow candidates for other finding charts.
757612206 313 U srclist found no candidates.
757612206 313 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -33.74944
GRB_ERROR: 5
GRB_RA: 54.66412
IMAGE_START_TIME: 15:47:23
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT