image overlap message for exposure 2 of trigger 1126853
uvot_overlap.pl vrs. 2010-12-20b fem started at 221009d14h24m48s982707usUT
The observation of trigger 1126853 started 2022-10-09T14:16:25.2
Examining file 1126853_g367_uvot_sky_image.fits
The exposure ID is 687017785
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (288.2595,19.7702) with a roll angle of 265.1
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 (288.2630,19.8030) with a radius of 3.000 arc min
This is 1.977 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 6.12 sq. arc min or 0.22 of the BAT error circle
The XRT error circle is centered at (288.2643,19.7712) with a radius of 0.093 arc min
This is 0.279 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 0.027 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1126853
find_uvot_ag.pl vrs. 2020-10-30 fem started at 221009d14h24m51s264103usUT
Observation start time is 2022-10-09T14:16:25.2
Examining file 1126853_g367_uvot_sources_image.fits
The exposure ID is 687017785
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 8 detected source(s) for 1126853_g367
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 288.2540 , 19.7723 with radius 2.00 arc min.
n_usno: 151 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Found 8 entries without IDs and 8 entries that are acceptable afterglow candidates for 1126853_g367.
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.
Magnitude criteria will be applied later.
BAT distances are from RA=288.2630 (19:13:03.12) DEC=19.8030 (+19:48:10.8)
XRT distances are from RA=288.2643 (19:13:03.43) DEC=19.7712 (+19:46:16.3)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1126853_g367 with genie
ra=288.24233 (19:12:58.16) dec=19.76175 (+19:45:42.3) +/- 0.7" mag=16.61+/-0.14
dist=81.9 REFID=1 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 164.2 arc sec from the BAT position.
Found 5 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
288.2422 19.7670 19.0 -1 USNO-B1 18.44 15.68 16.91
288.2468 19.7608 15.7 -1 USNO-B1 20.54 18.65 19.49
288.2463 19.7596 15.4 -1 USNO-B1 20.61 18.01 19.16
288.2423 19.7614 1.4 -1 USNO-B1 15.86 13.91 14.78 *
288.2391 19.7636 13.0 -1 USNO-B1 19.64 15.82 17.52 *
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 1126853_g367 with genie
ra=288.26753 (19:13:04.21) dec=19.78287 (+19:46:58.3) +/- 1.4" mag=20.81+/-0.42
dist=43.4 REFID=2 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 74.1 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
288.2663 19.7787 15.7 -1 USNO-B1 99.99 18.14 99.99
288.2676 19.7827 0.9 -1 USNO-B1 19.00 16.48 17.60 *
288.2705 19.7866 16.7 -1 USNO-B1 19.61 18.09 18.77
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 1126853_g367 with genie
ra=288.24904 (19:12:59.77) dec=19.77468 (+19:46:28.8) +/- 0.9" mag=19.34+/-0.20
dist=53.2 REFID=3 major=0.9 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 112.4 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
288.2542 19.7743 17.5 -1 USNO-B1 20.58 17.69 18.97
288.2509 19.7727 9.7 -1 USNO-B1 20.60 18.48 19.42 *
288.2489 19.7745 0.8 -1 USNO-B1 17.39 14.03 15.52 *
288.2449 19.7780 18.4 -1 USNO-B1 99.99 18.43 99.99
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 1126853_g367 with genie
ra=288.26463 (19:13:03.51) dec=19.77373 (+19:46:25.4) +/- 0.8" mag=17.64+/-0.15
dist=9.2 REFID=4 major=1.0 minor=0.8 flag=0
Found 7 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
288.2600 19.7727 16.0 -1 USNO-B1 16.46 14.41 15.32
288.2625 19.7749 8.2 -1 USNO-B1 20.63 17.80 19.05 *
288.2631 19.7731 5.7 -1 USNO-B1 20.54 17.05 18.60 *
288.2643 19.7715 8.0 -1 USNO-B1 20.56 18.48 19.41 *
288.2663 19.7787 18.6 -1 USNO-B1 99.99 18.14 99.99
288.2680 19.7765 15.1 -1 USNO-B1 20.47 17.95 19.07
288.2684 19.7763 15.8 -1 USNO-B1 20.67 16.91 18.58
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 1126853_g367 with genie
ra=288.26017 (19:13:02.44) dec=19.77297 (+19:46:22.7) +/- 0.8" mag=16.92+/-0.15
dist=15.4 REFID=5 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 108.5 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
288.2600 19.7727 1.2 -1 USNO-B1 16.46 14.41 15.32 *
288.2613 19.7680 18.4 -1 USNO-B1 20.58 17.83 19.05
288.2625 19.7749 10.7 -1 USNO-B1 20.63 17.80 19.05 *
288.2631 19.7731 9.9 -1 USNO-B1 20.54 17.05 18.60 *
288.2643 19.7715 14.9 -1 USNO-B1 20.56 18.48 19.41
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 1126853_g367 with genie
ra=288.24447 (19:12:58.67) dec=19.76999 (+19:46:12.0) +/- 0.8" mag=18.01+/-0.15
dist=67.3 REFID=6 major=0.9 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 134.4 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
288.2444 19.7697 1.2 -1 USNO-B1 16.31 13.22 14.59 *
288.2422 19.7670 13.2 -1 USNO-B1 18.44 15.68 16.91 *
288.2404 19.7694 13.8 -1 USNO-B1 18.53 15.84 17.04
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 6 in the list of sources is a candidate afterglow for 1126853_g367 with genie
ra=288.24047 (19:12:57.71) dec=19.76974 (+19:46:11.1) +/- 1.0" mag=20.04+/-0.27
dist=80.9 REFID=7 major=1.1 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 142.0 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
288.2444 19.7697 13.4 -1 USNO-B1 16.31 13.22 14.59 *
288.2422 19.7670 11.3 -1 USNO-B1 18.44 15.68 16.91 *
288.2404 19.7694 1.1 -1 USNO-B1 18.53 15.84 17.04 *
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 7 in the list of sources is a candidate afterglow for 1126853_g367 with genie
ra=288.24203 (19:12:58.09) dec=19.76726 (+19:46:02.1) +/- 0.9" mag=19.80+/-0.24
dist=76.8 REFID=8 major=1.0 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 147.0 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
288.2444 19.7697 11.9 -1 USNO-B1 16.31 13.22 14.59 *
288.2422 19.7670 0.9 -1 USNO-B1 18.44 15.68 16.91 *
288.2404 19.7694 9.5 -1 USNO-B1 18.53 15.84 17.04 *
288.2391 19.7636 16.4 -1 USNO-B1 19.64 15.82 17.52
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" 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
288.2600 19.7727 15.4 -1 USNO-B1 16.46 14.41 15.32
288.2613 19.7680 15.5 -1 USNO-B1 20.58 17.83 19.05
288.2625 19.7749 14.6 -1 USNO-B1 20.63 17.80 19.05
288.2631 19.7731 7.9 -1 USNO-B1 20.54 17.05 18.60
288.2643 19.7715 1.2 -1 USNO-B1 20.56 18.48 19.41
288.2691 19.7692 17.8 -1 USNO-B1 19.81 17.31 18.42
The closest star is 1.20" away.
List UVOT sources within 20" of the XRT position:
Unmatched source ra=288.26463 (19:13:03.51) dec=19.77373 (+19:46:25.4) +/- 0.8" mag=17.64+/-0.15 dist=9.2 REFID=4 flag=0
Unmatched source ra=288.26017 (19:13:02.44) dec=19.77297 (+19:46:22.7) +/- 0.8" mag=16.92+/-0.15 dist=15.4 REFID=5 flag=0
There are 14912.038 counts in the bkg source region of 5974.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.496 counts/pixel (5-sig UL in 4" is 19.97 mag) for 1126853_g367
There are 572.38843 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 2.862 counts/pixel for 1126853_g367
There are 2955.6487 counts in the xrt_bkg source region of 1176.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 2.513 counts/pixel (5-sig UL in 4" is 19.96 mag) for 1126853_g367
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 20.52, 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: 1126853_687017785_221009d14h24m51s264103usUT_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(288.2595,19.7702,45")
fk5;-circle(288.249037682995,19.7746750661928,6")
fk5;-circle(288.264629856454,19.7737268891351,6")
fk5;-circle(288.260165677062,19.7729687145703,6")
fk5;-circle(288.244469062593,19.769990126609,6")
Region file: 1126853_687017785_221009d14h24m51s264103usUT_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(288.2643,+19.7712,8")
Region file: 1126853_687017785_221009d14h24m51s264103usUT_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(288.2643,+19.7712,25")
fk5;-circle(288.2643,+19.7712,15")
fk5;-circle(288.264629856454,19.7737268891351,6")
fk5;-circle(288.260165677062,19.7729687145703,6")
image paragraph message for exposure 2 of trigger 1126853
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.
2 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB221009 (Swift/BAT trigger 1126853) at 14:10:17 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
337 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 1126853 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 221009d14h24m54s157225usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1126853
-expid=687017785 -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/1126853/
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.
UVOT exposure began at MET 687017785.16128 or about 2022:282:14:16:20 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 8 source(s) in Genie image catalog. 2 source(s) are within 20.0" of the
xrt position. Found 8 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.52 mag. Found 147 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 25% of the Genie image region.
Found 2 Genie source(s) within 20.0" of the XRT position. The brightest such
source has ra= 288.2646 dec= 19.7737 mag=17.64 sep=9.17". The closest Genie
source has ra= 288.2646 dec= 19.7737 mag=17.64 sep=9.17".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 250 seconds with the U filter starting
337 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 19:13:03.51 = 288.26463
DEC(J2000) = +19:46:25.4 = 19.77373
with a 90%-confidence error radius of about 0.76 arc sec. This position is 9.17
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.64 with a 1-sigma error of about 0.15. 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?
687017785 337 U srclist data are not available.
687017785 337 U image found no candidates.
List afterglow candidates for other finding charts.
687017627 179 WHITE 288.26454 19.77357 17.33/19.2 8.6 srclist Yes
687017627 179 WHITE 288.26452 19.77350 16.63/20.6 8.3 image Yes
------- Tokens for Quick GCN -------