image overlap message for exposure 2 of trigger 1144698
uvot_overlap.pl vrs. 2010-12-20b fem started at 221216d15h21m11s851378usUT
The observation of trigger 1144698 started 2022-12-16T11:26:45.9
Examining file ./1144698_g324_uvot_sky_image.fits
The exposure ID is 692882805
The exposure time is 32.513 (seconds)
The filter is U.
The uvot region is centered at (326.0272,-34.4225) with a roll angle of 264.1
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 (326.0210,-34.4050) with a radius of 3.000 arc min
This is 1.095 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 (326.0302,-34.4213) with a radius of 0.038 arc min
This is 0.169 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1144698
find_uvot_ag.pl vrs. 2020-10-30 fem started at 221216d15h21m17s765503usUT
Observation start time is 2022-12-16T11:26:45.9
Examining file ./1144698_g324_uvot_sources_image.fits
The exposure ID is 692882805
The exposure is 32.513 sec.
The bin size is 2 pixels
The filter is U
There are 3 detected source(s) for 1144698_g324
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 326.0297 , -34.4295 with radius 2.55 arc min.
n_usno: 50 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Found 3 entries without IDs and 3 entries that are acceptable afterglow candidates for 1144698_g324.
Acceptable entries have no ID, XRT distances < 5.75", 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=326.0210 (21:44:05.04) DEC=-34.4050 (-34:24:18.0)
XRT distances are from RA=326.0302 (21:44:07.25) DEC=-34.4213 (-34:25:16.5)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1144698_g324 with genie
ra=326.03750 (21:44:09.00) dec=-34.44993 (-34:26:59.8) +/- 0.8" mag=16.40+/-0.16
dist=105.5 REFID=1 major=0.9 minor=0.7 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 169.0 arc sec from the BAT position.
This source is near the edge of image (0.993)
Found 1 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
326.0362 -34.4509 5.1 -1 USNO-B1 16.74 15.52 16.06 *
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 1144698_g324 with genie
ra=326.01055 (21:44:02.53) dec=-34.40905 (-34:24:32.6) +/- 0.7" mag=13.20+/-0.14
dist=73.1 REFID=2 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 34.3 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
326.0097 -34.4096 3.0 -1 USNO-B1 12.93 11.93 12.37 *
326.0067 -34.4100 11.9 -1 USNO-B1 22.00 18.43 20.02 *
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 1144698_g324 with genie
ra=326.04875 (21:44:11.70) dec=-34.41119 (-34:24:40.3) +/- 0.8" mag=15.54+/-0.15
dist=65.9 REFID=3 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 85.4 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
326.0474 -34.4121 5.2 -1 USNO-B1 15.59 14.40 14.93 *
326.0508 -34.4101 7.4 -1 USNO-B1 99.99 19.59 99.99 *
326.0537 -34.4098 15.6 -1 USNO-B1 20.80 19.91 20.30
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
Found 0 entries in star catalog(s) within 20" of the XRT position.
List UVOT sources within 20" of the XRT position:
There are 3982.9399 counts in the bkg source region of 6319.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 0.630 counts/pixel (5-sig UL in 4" is 18.50 mag) for 1144698_g324
There are 124.48150 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 0.629 counts/pixel for 1144698_g324
There are 762.31818 counts in the xrt_bkg source region of 1248.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 0.611 counts/pixel (5-sig UL in 4" is 18.52 mag) for 1144698_g324
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 19.06, XRT distances < 5.75",
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: 1144698_692882805_221216d15h21m17s765503usUT_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(326.0272,-34.4225,45")
Region file: 1144698_692882805_221216d15h21m17s765503usUT_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(326.03021,-34.42125,8")
Region file: 1144698_692882805_221216d15h21m17s765503usUT_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(326.03021,-34.42125,25")
fk5;-circle(326.03021,-34.42125,15")
image paragraph message for exposure 2 of trigger 1144698
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 GRB221216 (Swift/BAT trigger 1144698) at 11:21:20 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 33 seconds with the U filter starting
294 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 0.042.
------- notes for trigger 1144698 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 221216d15h21m19s699446usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1144698
-expid=692882805 -meonly -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/1144698/
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 692882805.89098 or about 2022:350:11:26:40 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 3 source(s) in Genie image catalog. Found 3 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 19.06 mag. Found 46 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 4% of the
Genie image region. The closest Genie source has ra= 326.0487 dec= -34.4112
mag=15.54 sep=65.92".
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?
692882805 293 U srclist data are not available.
692882805 293 U image found no candidates.
List afterglow candidates for other finding charts.
692882593 81 WHITE srclist found no candidates.
692882593 81 WHITE image found no candidates.
------- Tokens for Quick GCN -------