image overlap message for exposure 3 of trigger 1125354
uvot_overlap.pl vrs. 2010-12-20b fem started at 220926d09h43m36s911634usUT
The observation of trigger 1125354 started 2022-09-26T09:37:40.9
Examining file 1125354_g889_uvot_sky_image.fits
The exposure ID is 685877860
The exposure time is 149.857 (seconds)
The filter is WHITE.
*** Warning -- found 13379 null pixels in the image.
The uvot region is centered at (244.9972,-16.0448) 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 0.801 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 0.292 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 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 3 of trigger 1125354
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220926d09h43m38s244559usUT
Observation start time is 2022-09-26T09:37:40.9
Examining file 1125354_g889_uvot_sources_image.fits
The exposure ID is 685877860
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 6 detected source(s) for 1125354_g889
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 244.9953 , -16.0553 with radius 2.00 arc min.
n_usno: 88 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_g889.
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_g889 with genie
ra=245.01095 (16:20:02.63) dec=-16.06073 (-16:03:38.6) +/- 0.8" mag=18.83+/-0.16
dist=68.1 REFID=1 major=0.9 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 63.8 arc sec from the BAT position.
This source is near the edge of image (0.888)
Found 3 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
245.0106 -16.0575 11.8 -1 USNO-B1 16.55 15.02 15.70 *
245.0109 -16.0583 8.7 -1 USNO-B1 19.26 17.36 18.20 *
245.0141 -16.0574 16.1 -1 USNO-B1 20.84 99.99 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 1125354_g889 with genie
ra=244.99468 (16:19:58.72) dec=-16.04985 (-16:02:59.5) +/- 0.8" mag=19.61+/-0.19
dist=33.9 REFID=2 major=1.2 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 61.6 arc sec from the BAT position.
Found 4 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
244.9946 -16.0534 12.7 -1 USNO-B1 19.08 18.05 18.50 *
244.9898 -16.0477 18.7 -1 USNO-B1 20.07 18.43 19.16
244.9935 -16.0461 14.1 -1 USNO-B1 20.62 19.42 19.95
244.9957 -16.0449 18.0 -1 USNO-B1 20.52 18.14 19.20
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 2 in the list of sources is a candidate afterglow for 1125354_g889 with genie
ra=245.00108 (16:20:00.26) dec=-16.05115 (-16:03:04.2) +/- 0.7" mag=17.30+/-0.14
dist=26.8 REFID=3 major=1.0 minor=0.9 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 45.2 arc sec from the BAT position.
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
245.0024 -16.0488 9.6 -1 USNO-B1 19.48 18.29 18.82 *
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 3 in the list of sources is a candidate afterglow for 1125354_g889 with genie
ra=245.00046 (16:20:00.11) dec=-16.05740 (-16:03:26.6) +/- 0.7" mag=17.51+/-0.14
dist=49.3 REFID=4 major=2.1 minor=1.0 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 63.4 arc sec from the BAT position.
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
245.0026 -16.0599 11.9 -1 USNO-B1 18.88 17.84 18.30 *
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_g889 with genie
ra=245.00526 (16:20:01.26) dec=-16.05555 (-16:03:20.0) +/- 0.8" mag=18.56+/-0.15
dist=43.6 REFID=5 major=2.2 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 49.3 arc sec from the BAT position.
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
245.0026 -16.0599 18.3 -1 USNO-B1 18.88 17.84 18.30
245.0075 -16.0562 8.0 -1 USNO-B1 17.65 16.55 17.03 *
245.0106 -16.0575 19.6 -1 USNO-B1 16.55 15.02 15.70
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 5 in the list of sources is a candidate afterglow for 1125354_g889 with genie
ra=244.97961 (16:19:55.11) dec=-16.05814 (-16:03:29.3) +/- 0.8" mag=18.15+/-0.15
dist=93.7 REFID=6 major=1.5 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 121.5 arc sec from the BAT position.
This source is near the edge of image (0.949)
Found 4 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
244.9813 -16.0574 6.5 -1 USNO-B1 16.68 15.46 16.01 *
244.9810 -16.0543 14.8 -1 USNO-B1 20.40 19.13 19.70 *
244.9756 -16.0543 19.5 -1 USNO-B1 20.16 99.99 99.99 *
244.9752 -16.0547 19.5 -1 USNO-B1 18.54 17.54 17.98 *
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 59945.680 counts in the bkg source region of 2556.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 23.453 counts/pixel (5-sig UL in 4" is 19.64 mag) for 1125354_g889
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
There are 4319.0947 counts in the xrt_bkg source region of 190.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 22.732 counts/pixel (5-sig UL in 4" is 19.65 mag) for 1125354_g889
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 20.19, 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_685877860_220926d09h43m38s244559usUT_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(244.9972,-16.0448,45")
fk5;-circle(244.994683112117,-16.0498520885159,6")
fk5;-circle(245.001075012994,-16.0511543405208,6")
fk5;-circle(245.000460821572,-16.0573958481828,6")
fk5;-circle(245.005261363744,-16.0555464824712,6")
Region file: 1125354_685877860_220926d09h43m38s244559usUT_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_685877860_220926d09h43m38s244559usUT_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")
fk5;-circle(245.001075012994,-16.0511543405208,6")
image paragraph message for exposure 3 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 150 seconds with the White filter
starting 860 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 220926d09h43m39s563130usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1125354
-expid=685877860 -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 685877860.8863 or about 2022:269:09:37:35 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 20.19 mag. Found 84 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 14% of the
Genie image region. The Genie image is INCOMPLETE with 13379 null pixels.
The closest Genie source has ra= 245.0011 dec= -16.0511 mag=17.30 sep=26.76".
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?
685877860 860 WHITE srclist data are not available.
685877860 860 WHITE 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
685877355 355 ? srclist data are not available.
685877355 355 U image found no candidates.
------- Tokens for Quick GCN -------