image overlap message for exposure 1 of trigger 1192483
uvot_overlap.pl vrs. 2010-12-20b fem started at 230918d02h51m19s971676usUT
The observation of trigger 1192483 started 2023-09-18T02:44:22.9
Examining file 1192483_g230_uvot_sky_image.fits
The exposure ID is 716697862
The exposure time is 249.935 (seconds)
The filter is U.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
*** Warning -- found 22435 null pixels in the image.
The uvot region is centered at (261.5593,-15.8800) with a roll angle of 273.0
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 (261.5830,-15.9000) with a radius of 3.000 arc min
This is 1.823 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 at most 4.88 sq. arc min or 0.17 of the BAT error circle
Could not find the location of an XRT error circle
image afterglow message for exposure 1 of trigger 1192483
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230918d02h51m21s535049usUT
Observation start time is 2023-09-18T02:44:22.9
Examining file 1192483_g230_uvot_sources_image.fits
The exposure ID is 716697862
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 4 detected source(s) for 1192483_g230
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 261.5478 , -15.8957 with radius 2.16 arc min.
n_usno: 225 n_gsc: 550
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.533
RA DEC Mag Color
bright star 0: 261.53046 (17:26:07.31) -15.88364 (-15:53:01.1) 11.53 GSC-F
*** WARNING -- no XRT distances are available.
Found 4 entries without IDs and 3 entries that are acceptable afterglow candidates for 1192483_g230.
Acceptable entries have no ID, BAT distance < 210" or XRT distance < 20", 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=261.5830 (17:26:19.92) DEC=-15.9000 (-15:54:00.0)
XRT distances are as reported in catalog file.
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1192483_g230 with genie
ra=261.56479 (17:26:15.55) dec=-15.90546 (-15:54:19.7) +/- 0.7" mag=16.28+/-0.14
dist=66.0 REFID=1 major=3.2 minor=1.6 flag=16 (aperture_incomplete)
This source is near the edge of image (0.867)
Found 13 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 12 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
261.5652 -15.9086 11.3 -1 USNO-B1 19.73 99.99 99.99 *
261.5620 -15.9011 18.5 -1 GSC2.3 18.30 20.17 99.99 *
261.5601 -15.9055 16.4 -1 GSC2.3 18.29 19.14 99.99 *
261.5617 -15.9035 12.8 -1 GSC2.3 19.31 21.73 99.99 *
261.5622 -15.9051 9.1 -1 GSC2.3 19.00 20.85 99.99 *
261.5645 -15.9023 11.3 -1 GSC2.3 17.81 19.29 99.99 *
261.5661 -15.9031 9.6 -1 GSC2.3 18.61 19.96 99.99 *
261.5651 -15.9053 1.2 -1 GSC2.3 18.53 19.93 99.99 *
261.5667 -15.9059 6.7 -1 GSC2.3 19.23 21.68 99.99 *
261.5652 -15.9086 11.3 -1 GSC2.3 18.50 19.70 99.99 *
261.5686 -15.9040 14.2 -1 GSC2.3 19.46 21.52 99.99 *
261.5680 -15.9086 15.8 -1 GSC2.3 19.01 21.21 99.99 *
261.5693 -15.9067 16.1 -1 GSC2.3 19.65 21.84 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 20.25" or brighter than 12 mag
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1192483_g230 with genie
ra=261.56132 (17:26:14.72) dec=-15.90601 (-15:54:21.7) +/- 0.9" mag=19.24+/-0.21
dist=78.1 REFID=2 major=1.6 minor=1.3 flag=0
This source is near the edge of image (0.966)
Found 18 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
261.5568 -15.9052 15.9 -1 USNO-B1 17.69 15.78 16.63 *
261.5567 -15.9091 19.4 -1 USNO-B1 19.63 18.41 18.95 *
261.5615 -15.9105 16.3 -1 USNO-B1 99.99 17.73 99.99 *
261.5623 -15.9112 18.9 -1 USNO-B1 18.48 16.04 17.12 *
261.5652 -15.9086 16.2 -1 USNO-B1 19.73 99.99 99.99 *
261.5568 -15.9052 15.8 -1 GSC2.3 15.99 17.08 99.99 *
261.5620 -15.9011 17.9 -1 GSC2.3 18.30 20.17 99.99 *
261.5601 -15.9055 4.8 -1 GSC2.3 18.29 19.14 99.99 *
261.5617 -15.9035 9.3 -1 GSC2.3 19.31 21.73 99.99 *
261.5566 -15.9091 19.8 -1 GSC2.3 18.22 19.42 99.99 *
261.5622 -15.9051 4.5 -1 GSC2.3 19.00 20.85 99.99 *
261.5645 -15.9023 17.3 -1 GSC2.3 17.81 19.29 99.99 *
261.5661 -15.9031 19.5 -1 GSC2.3 18.61 19.96 99.99 *
261.5651 -15.9053 13.4 -1 GSC2.3 18.53 19.93 99.99 *
261.5612 -15.9102 15.0 -1 GSC2.3 99.99 20.99 99.99 *
261.5667 -15.9059 18.5 -1 GSC2.3 19.23 21.68 99.99 *
261.5623 -15.9112 18.9 -1 GSC2.3 16.06 17.90 99.99 *
261.5652 -15.9086 16.2 -1 GSC2.3 18.50 19.70 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 20.25" or brighter than 12 mag
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1192483_g230 with genie
ra=261.56142 (17:26:14.74) dec=-15.90339 (-15:54:12.2) +/- 0.9" mag=19.38+/-0.22
dist=75.7 REFID=4 major=2.5 minor=1.6 flag=0
This source is near the edge of image (0.864)
Found 17 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
261.5592 -15.8984 19.5 -1 USNO-B1 18.48 16.48 17.37 *
261.5590 -15.9002 14.2 -1 USNO-B1 19.38 18.35 18.81 *
261.5568 -15.9052 17.2 -1 USNO-B1 17.69 15.78 16.63 *
261.5622 -15.8991 15.6 -1 USNO-B1 18.83 17.48 18.08 *
261.5577 -15.9011 15.1 -1 GSC2.3 18.31 19.73 99.99 *
261.5592 -15.8984 19.6 -1 GSC2.3 16.64 17.44 99.99 *
261.5589 -15.9002 14.4 -1 GSC2.3 18.15 19.08 99.99 *
261.5568 -15.9052 17.2 -1 GSC2.3 15.99 17.08 99.99 *
261.5622 -15.8991 15.8 -1 GSC2.3 17.29 18.37 99.99 *
261.5620 -15.9011 8.5 -1 GSC2.3 18.30 20.17 99.99 *
261.5601 -15.9055 8.9 -1 GSC2.3 18.29 19.14 99.99 *
261.5617 -15.9035 1.1 -1 GSC2.3 19.31 21.73 99.99 *
261.5648 -15.8990 19.5 -1 GSC2.3 19.02 20.66 99.99 *
261.5622 -15.9051 6.7 -1 GSC2.3 19.00 20.85 99.99 *
261.5645 -15.9023 11.4 -1 GSC2.3 17.81 19.29 99.99 *
261.5661 -15.9031 16.1 -1 GSC2.3 18.61 19.96 99.99 *
261.5651 -15.9053 14.6 -1 GSC2.3 18.53 19.93 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 20.25" or brighter than 12 mag
There are 0.0000000 counts in the bkg source region of 0.0000000 pixels.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 17.76, BAT distances < 210",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Results are questionable because aspect solution FAILED.
Region file: 1192483_716697862_230918d02h51m21s535049usUT_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(261.5593,-15.8800,45")
image paragraph message for exposure 1 of trigger 1192483
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no aspect solution
SRCLIST PROBLEM: no srclist afterglow info
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB230918 (Swift/BAT trigger 1192483) at 02:40:31 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
198 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 no aspect solution. Results from the list of sources generated
on-board are not available at this time. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.437.
------- notes for trigger 1192483 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230918d02h51m23s868211usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1192483
-expid=716697862 -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/1192483/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
No XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 716697862.93526 or about 2023:261:02:44:17 UT
No information found about the number of stars in the star catalog for srclist
region.
THERE IS NO ASPECT SOLUTION for the image data.
Found 4 source(s) in Genie image catalog. Found 4 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 17.76 mag. Found 549 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 81% of the
Genie image region. The Genie image is INCOMPLETE with 22435 null pixels.
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?
716697862 198 U srclist data are not available.
716697862 198 U image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------