srclist overlap message for exposure 2 of trigger 1181187
uvot_overlap.pl vrs. 2010-12-20b fem started at 230728d11h13m59s834591usUT
The observation of trigger 1181187 started 2023-07-28T02:55:46.8
Examining file ./1181187_g342_uvot_sky_srclist.fits
The exposure ID is 712205746
The exposure time is undefined.
The filter is U.
The uvot region is centered at (343.5178,28.1788) with a roll angle of 40.9
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 (343.5390,28.1510) with a radius of 3.000 arc min
This is 2.008 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 25.55 sq. arc min or 0.90 of the BAT error circle
The XRT error circle is centered at (343.5157,28.1743) with a radius of 0.035 arc min
This is 0.290 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 1181187
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230728d11h14m13s955653usUT
Observation start time is 2023-07-28T02:55:46.8
Examining file ./1181187_g342_uvot_catalog_srclist.fits
The exposure ID is 712205746
The exposure is 249.924 sec.
The bin size is 2 pixels
The filter is U
There are 34 detected source(s) for 1181187_g342
Aspect correction adds 0.00185 degrees (0.445 sec of time = 5.88 arc sec) to RA
Aspect correction adds 0.00081 degrees ( 2.91 arcsec) to Dec
Total aspect correction is 6.56 arcsec
Star catalogs centered at 343.5257 , 28.1745 with radius 6.13 arc min.
n_usno: 520 n_gsc: 474
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.44734
RA DEC Mag Color
bright star 0: 343.55326 (22:54:12.78) 28.17351 (+28:10:24.7) 10.45 USNO-V
Mean distance difference (CAT_DELTA) for 24 matched entries is 0.951" for 1181187_g342
Mean and std. dev of mag. difference (MAG_DELTA) are 2.432 and 0.604 for 1181187_g342
Found 12 entries without IDs and 1 entries that are acceptable afterglow candidates for 1181187_g342.
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.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=343.5390 (22:54:09.36) DEC=28.1510 (+28:09:03.6)
XRT distances are from RA=343.5157 (22:54:03.77) DEC=28.1743 (+28:10:27.6)
*** WARNING 35 per cent of entries have no IDs.
-----------------
Entry 4 in the list of sources is a candidate afterglow for 1181187_g342 with 5x5 stamp
ra=343.52782 (22:54:06.68) dec=28.19427 (+28:11:39.4) +/- 1.1" mag=19.56+/-0.35
dist=81.4 REFID=21
*** The position of this source is inconsistent with the XRT position.
The position is 159.8 arc sec from the BAT position.
src: 4 distr. of nearby unmatched sources: 0 0 0 0 0
Found 6 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
343.5319 28.1902 19.7 -1 USNO-B1 20.54 18.88 19.61
343.5269 28.1944 3.0 -1 USNO-B1 16.49 16.02 16.23 *
343.5281 28.1997 19.6 -1 USNO-B1 19.77 19.09 19.39
343.5320 28.1902 19.7 -1 GSC2.3 18.43 20.77 18.82
343.5270 28.1944 2.6 -1 GSC2.3 15.92 17.40 16.34 *
343.5282 28.1997 19.6 -1 GSC2.3 18.65 20.03 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are 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:
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 18.12, 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 1181187
------ Start for Possible Stand-alone Circular ----
In response to GRB230728 (Swift/BAT trigger 1181187) at 02:50:03 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
311 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 100% of the
XRT error circle. The typical 3-sigma upper limit has been about 19.2 mag. 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 18.0 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.080.
------- notes for trigger 1181187 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230728d11h14m16s470566usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1181187
-expid=712205746 -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/1181187/
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 712205746.81388 or about 2023:209:02:55:41 UT
Found 516 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 9% of the srclist region. Found 34 sources in
srclist catalog. Found 12 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
Found 8 source(s) in Genie image catalog. Found 1 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.71 mag. Found 93 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 11% of the
Genie image region.
Genie image analysis:
Found 10852.1 counts in the large background region of 6143.0 pixels or a rate
of 1.767 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 19.98 mag. for a
4-arcsec aperture.
Found 335.6 counts in the XRT position region of 200.0 pixels or a rate of
1.678 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.039 +/- 0.079 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.238 cps or 19.72 mag. The closest srclist
source has ra= 343.5208 dec= 28.1912 mag=18.78 sep=62.92". The closest Genie
source has ra= 343.5191 dec= 28.1809 mag=18.68 sep=25.84".
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?
712205746 311 U srclist found no candidates.
712205746 311 U image found no candidates.
List afterglow candidates for other finding charts.
712205534 99 WHITE srclist found no candidates.
712205534 99 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 28.17433
GRB_ERROR: 5.25
GRB_RA: 343.51571
IMAGE_START_TIME: 02:55:41
MAGNITUDE: 19.7
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT