image overlap message for exposure 2 of trigger 1125354
uvot_overlap.pl vrs. 2010-12-20b fem started at 220926d09h39m32s898091usUT
The observation of trigger 1125354 started 2022-09-26T09:29:15.7
Examining file 1125354_g384_uvot_sky_image.fits
The exposure ID is 685877355
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (244.9979,-16.0450) with a roll angle of 277.0
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 (245.0110,-16.0430) with a radius of 3.000 arc min
This is 0.763 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 (245.0022,-16.0438) with a radius of 0.078 arc min
This is 0.256 arc min from the center of the uvot region
The area of the XRT error circle is 0.019 sq. arc min
The UVOT/XRT overlap is 0.019 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1125354
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220926d09h39m34s383851usUT
Observation start time is 2022-09-26T09:29:15.7
Examining file 1125354_g384_uvot_sources_image.fits
The exposure ID is 685877355
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 6 detected source(s) for 1125354_g384
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 244.9930 , -16.0477 with radius 2.50 arc min.
n_usno: 134 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Found 6 entries without IDs and 6 entries that are acceptable afterglow candidates for 1125354_g384.
Acceptable entries have no ID, XRT distances < 11.75", 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=245.0110 (16:20:02.64) DEC=-16.0430 (-16:02:34.8)
XRT distances are from RA=245.0022 (16:20:00.53) DEC=-16.0438 (-16:02:37.7)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1125354_g384 with genie
ra=244.99263 (16:19:58.23) dec=-16.05550 (-16:03:19.8) +/- 0.7" mag=12.11+/-0.14
dist=53.6 REFID=1 major=3.7 minor=2.2 flag=18 (blended+aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 77.9 arc sec from the BAT position.
Found 2 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
244.9946 -16.0534 10.3 -1 USNO-B1 19.08 18.05 18.50 *
244.9893 -16.0534 13.8 -1 USNO-B1 20.65 19.64 20.09
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1125354_g384 with genie
ra=244.99087 (16:19:57.81) dec=-16.06718 (-16:04:01.9) +/- 0.7" mag=15.50+/-0.14
dist=92.9 REFID=2 major=0.8 minor=0.7 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 111.5 arc sec from the BAT position.
This source is near the edge of image (1.005)
Found 1 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
244.9939 -16.0680 10.9 -1 USNO-B1 19.56 19.41 19.48 *
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 2 in the list of sources is a candidate afterglow for 1125354_g384 with genie
ra=244.96913 (16:19:52.59) dec=-16.05050 (-16:03:01.8) +/- 0.7" mag=15.26+/-0.14
dist=116.9 REFID=3 major=2.5 minor=1.1 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 147.3 arc sec from the BAT position.
This source is near the edge of image (0.939)
Found 3 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
244.9739 -16.0505 16.6 -1 USNO-B1 19.64 18.81 19.18 *
244.9737 -16.0506 15.7 -1 USNO-B1 99.99 18.79 99.99 *
244.9680 -16.0552 17.4 -1 USNO-B1 20.17 18.47 19.22 *
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 1125354_g384 with genie
ra=245.01685 (16:20:04.04) dec=-16.05050 (-16:03:01.8) +/- 0.8" mag=17.01+/-0.15
dist=56.1 REFID=4 major=1.7 minor=1.2 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 33.7 arc sec from the BAT position.
Found 2 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
245.0129 -16.0477 16.9 -1 USNO-B1 21.08 19.72 20.32
245.0190 -16.0506 7.6 -1 USNO-B1 20.41 18.35 19.27 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
-----------------
Entry 4 in the list of sources is a candidate afterglow for 1125354_g384 with genie
ra=245.00923 (16:20:02.21) dec=-16.02824 (-16:01:41.7) +/- 1.2" mag=19.95+/-0.33
dist=61.1 REFID=5 major=1.2 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 53.5 arc sec from the BAT position.
This source is near the edge of image (0.875)
Found 2 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
245.0125 -16.0297 12.4 -1 USNO-B1 20.75 19.05 19.81 *
245.0107 -16.0234 18.3 -1 USNO-B1 18.84 17.73 18.22 *
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 5 in the list of sources is a candidate afterglow for 1125354_g384 with genie
ra=244.99094 (16:19:57.83) dec=-16.06568 (-16:03:56.5) +/- 0.7" mag=15.94+/-0.14
dist=87.9 REFID=6 major=1.1 minor=0.8 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 107.2 arc sec from the BAT position.
This source is near the edge of image (0.949)
Found 1 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
244.9939 -16.0680 13.2 -1 USNO-B1 19.56 19.41 19.48 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 20.25" or brighter than 12 mag
Found 2 entries in star catalog(s) within 20" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
245.0024 -16.0488 18.0 -1 USNO-B1 19.48 18.29 18.82
245.0038 -16.0459 9.5 -1 USNO-B1 18.81 17.69 18.19
The closest star is 9.54" away.
List UVOT sources within 20" of the XRT position:
There are 45922.566 counts in the bkg source region of 6229.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 7.372 counts/pixel (5-sig UL in 4" is 19.38 mag) for 1125354_g384
There are 1399.6960 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 6.998 counts/pixel for 1125354_g384
There are 8599.9668 counts in the xrt_bkg source region of 1248.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 6.891 counts/pixel (5-sig UL in 4" is 19.42 mag) for 1125354_g384
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 19.93, XRT distances < 11.75",
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: 1125354_685877355_220926d09h39m34s383851usUT_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(244.9979,-16.0450,45")
fk5;-circle(244.992626865731,-16.0554975470256,6")
Region file: 1125354_685877355_220926d09h39m34s383851usUT_xrt.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(245.0022,-16.0438,8")
Region file: 1125354_685877355_220926d09h39m34s383851usUT_xrt_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(245.0022,-16.0438,25")
fk5;-circle(245.0022,-16.0438,15")
image paragraph message for exposure 2 of trigger 1125354
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 GRB220926 (Swift/BAT trigger 1125354) at 09:22:50 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
355 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 0.269.
------- notes for trigger 1125354 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220926d09h39m35s867477usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1125354
-expid=685877355 -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/1125354/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 685877355.71102 or about 2022:269:09:29:10 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 6 source(s) in Genie image catalog. Found 6 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 19.93 mag. Found 130 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 14% of the
Genie image region. The closest Genie source has ra= 244.9926 dec= -16.0555
mag=12.11 sep=53.57".
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?
685877355 355 U srclist data are not available.
685877355 355 U image found no candidates.
List afterglow candidates for other finding charts.
685877143 143 ? srclist data are not available.
685877143 143 WHITE 244.99948 -16.04263 16.12/20.2 10.3 image No
------- Tokens for Quick GCN -------