image overlap message for exposure 2 of trigger 1125106
uvot_overlap.pl vrs. 2010-12-20b fem started at 220923d11h30m05s893228usUT
The observation of trigger 1125106 started 2022-09-23T11:24:30.8
Examining file 1125106_g883_uvot_sky_image.fits
The exposure ID is 685625070
The exposure time is 149.813 (seconds)
The filter is U.
The uvot region is centered at (135.6787,-40.7127) with a roll angle of 56.7
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 (135.7200,-40.7070) with a radius of 3.000 arc min
This is 1.910 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 6.24 sq. arc min or 0.22 of the BAT error circle
The XRT error circle is centered at (135.6513,-40.7171) with a radius of 0.093 arc min
This is 1.273 arc min from the center of the uvot region
The area of the XRT error circle is 0.027 sq. arc min
The UVOT/XRT overlap is 0.026 sq. arc min or 0.95 of the XRT error circle
image afterglow message for exposure 2 of trigger 1125106
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220923d11h30m07s124473usUT
Observation start time is 2022-09-23T11:24:30.8
Examining file 1125106_g883_uvot_sources_image.fits
The exposure ID is 685625070
The exposure is 149.813 sec.
The bin size is 2 pixels
The filter is U
There are 7 detected source(s) for 1125106_g883
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 135.6704 , -40.7136 with radius 2.35 arc min.
n_usno: 193 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.45
RA DEC Mag Color
bright star 0: 135.65836 (09:02:38.01) -40.74084 (-40:44:27.0) 11.45 USNO-R
Found 7 entries without IDs and 7 entries that are acceptable afterglow candidates for 1125106_g883.
Acceptable entries have no ID, XRT distances < 14", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=135.7200 (09:02:52.80) DEC=-40.7070 (-40:42:25.2)
XRT distances are from RA=135.6513 (09:02:36.31) DEC=-40.7171 (-40:43:01.6)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1125106_g883 with genie
ra=135.67272 (09:02:41.45) dec=-40.73042 (-40:43:49.5) +/- 0.7" mag=11.72+/-0.14
dist=75.6 REFID=1 major=15.5 minor=6.9 flag=19 (neighbor+blended+aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 154.1 arc sec from the BAT position.
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
135.6677 -40.7292 14.4 -1 USNO-B1 18.23 16.51 17.27
135.6783 -40.7301 15.1 -1 USNO-B1 21.48 99.99 99.99
135.6734 -40.7353 17.6 -1 USNO-B1 18.75 17.52 18.07
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 15.5
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1125106_g883 with genie
ra=135.68213 (09:02:43.71) dec=-40.72893 (-40:43:44.1) +/- 0.7" mag=12.02+/-0.14
dist=94.3 REFID=2 major=12.3 minor=8.8 flag=19 (neighbor+blended+aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 130.0 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
135.6804 -40.7237 19.3 -1 USNO-B1 20.61 19.06 19.75
135.6783 -40.7301 11.3 -1 USNO-B1 21.48 99.99 99.99 *
135.6811 -40.7302 5.4 -1 USNO-B1 19.25 18.16 18.65 *
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 1125106_g883 with genie
ra=135.68082 (09:02:43.40) dec=-40.73460 (-40:44:04.5) +/- 0.7" mag=14.65+/-0.14
dist=102.2 REFID=3 major=5.3 minor=1.0 flag=19 (neighbor+blended+aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 145.9 arc sec from the BAT position.
This source is near the edge of image (0.956)
Found 5 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
135.6783 -40.7301 17.7 -1 USNO-B1 21.48 99.99 99.99 *
135.6811 -40.7302 15.8 -1 USNO-B1 19.25 18.16 18.65 *
135.6778 -40.7344 8.1 -1 USNO-B1 18.82 17.63 18.16 *
135.6869 -40.7340 16.8 -1 USNO-B1 20.18 19.04 19.54 *
135.6857 -40.7368 15.5 -1 USNO-B1 19.57 18.62 19.04 *
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 1125106_g883 with genie
ra=135.66175 (09:02:38.82) dec=-40.71874 (-40:43:07.5) +/- 0.7" mag=14.33+/-0.14
dist=29.1 REFID=4 major=3.2 minor=1.8 flag=18 (blended+aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 164.5 arc sec from the BAT position.
Found 5 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
135.6671 -40.7159 17.7 -1 USNO-B1 19.15 17.58 18.28
135.6638 -40.7140 18.0 -1 USNO-B1 19.55 18.14 18.77
135.6647 -40.7217 13.2 -1 USNO-B1 21.39 20.06 20.65 *
135.6570 -40.7160 16.3 -1 USNO-B1 20.00 18.34 19.08
135.6627 -40.7238 18.4 -1 USNO-B1 18.57 17.16 17.79
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 1125106_g883 with genie
ra=135.65877 (09:02:38.10) dec=-40.72078 (-40:43:14.8) +/- 0.7" mag=15.63+/-0.14
dist=24.3 REFID=5 major=1.1 minor=1.0 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 174.3 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
135.6647 -40.7217 16.4 -1 USNO-B1 21.39 20.06 20.65
135.6570 -40.7160 17.8 -1 USNO-B1 20.00 18.34 19.08
135.6627 -40.7238 15.2 -1 USNO-B1 18.57 17.16 17.79
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 5 in the list of sources is a candidate afterglow for 1125106_g883 with genie
ra=135.66424 (09:02:39.42) dec=-40.69254 (-40:41:33.2) +/- 0.8" mag=16.25+/-0.15
dist=95.2 REFID=6 major=1.7 minor=0.3 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 160.9 arc sec from the BAT position.
This source is near the edge of image (0.969)
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
135.6651 -40.6953 10.2 -1 USNO-B1 21.93 17.93 19.71 *
135.6642 -40.6950 8.8 -1 USNO-B1 21.38 19.31 20.23 *
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 6 in the list of sources is a candidate afterglow for 1125106_g883 with genie
ra=135.65904 (09:02:38.17) dec=-40.69328 (-40:41:35.8) +/- 0.8" mag=16.40+/-0.15
dist=88.3 REFID=7 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 173.6 arc sec from the BAT position.
This source is near the edge of image (0.950)
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
135.6651 -40.6953 18.0 -1 USNO-B1 21.93 17.93 19.71 *
135.6642 -40.6950 15.4 -1 USNO-B1 21.38 19.31 20.23 *
135.6546 -40.6927 12.3 -1 USNO-B1 19.99 18.34 19.07 *
135.6593 -40.6883 18.1 -1 USNO-B1 99.99 20.14 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
Found 6 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
135.6570 -40.7160 15.9 -1 USNO-B1 20.00 18.34 19.08
135.6501 -40.7156 6.4 -1 USNO-B1 99.99 19.87 99.99
135.6505 -40.7175 2.7 -1 USNO-B1 19.94 18.70 19.25
135.6477 -40.7157 11.0 -1 USNO-B1 20.96 19.38 20.08
135.6506 -40.7223 18.7 -1 USNO-B1 19.68 17.80 18.63
135.6475 -40.7162 10.8 -1 USNO-B1 21.03 19.14 19.98
The closest star is 2.71" away.
List UVOT sources within 20" of the XRT position:
There are 70554.938 counts in the bkg source region of 6309.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 11.183 counts/pixel (5-sig UL in 4" is 18.60 mag) for 1125106_g883
Do not compute counts in XRT region because position is too far from center.
There are 1 candidate(s) outside XRT error circle with mag < 18.59
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.15, XRT distances < 14",
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: 1125106_685625070_220923d11h30m07s124473usUT_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(135.6787,-40.7127,45")
image paragraph message for exposure 2 of trigger 1125106
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.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB220923 (Swift/BAT trigger 1125106) at 11:09:46 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the U filter starting
854 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
large, but uncertain, extinction expected.
------- notes for trigger 1125106 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220923d11h30m08s510304usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1125106
-expid=685625070 -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/1125106/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position. XRT position found for Genie image. BAT position found.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 685625070.81448 or about 2022:266:11:24:25 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 7 source(s) in Genie image catalog. Found 7 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 19.15 mag. Found 189 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 23% of the
Genie image region. The closest Genie source has ra= 135.6588 dec= -40.7208
mag=15.63 sep=24.30".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the image data with mag < 18.59 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=135.65877
(09:02:38.10), DEC=-40.72078 (-40:43:14.8) (J2000). It has a mag of 15.63. It
is 174.3" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 150 seconds with the U filter starting
854 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 09:02:38.10 = 135.65877
DEC(J2000) = -40:43:14.8 = -40.72078
with a 90%-confidence error radius of about 0.75 arc sec. The estimated
magnitude is 15.63 with a 1-sigma error of about 0.14. No correction has been
made for the large, but uncertain, extinction expected.
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?
685625070 854 U srclist data are not available.
685625070 854 U image found no candidates.
List afterglow candidates for other finding charts.
685624394 178 ? srclist data are not available.
685624394 178 U image found no candidates.
------- Tokens for Quick GCN -------