image overlap message for exposure 2 of trigger 1205319
uvot_overlap.pl vrs. 2010-12-20b fem started at 231230d12h20m29s406002usUT
The observation of trigger 1205319 started 2023-12-30T01:34:45.4
Examining file ./1205319_g336_uvot_sky_image.fits
The exposure ID is 725592885
The exposure time is 249.935 (seconds)
The filter is U.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
The uvot region is centered at (245.2066,58.1166) with a roll angle of 149.3
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 (245.1970,58.1200) with a radius of 3.000 arc min
This is 0.366 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 (245.2144,58.1239) with a radius of 0.035 arc min
This is 0.506 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1205319
find_uvot_ag.pl vrs. 2023-04-25a fem started at 231230d12h20m38s946222usUT
Observation start time is 2023-12-30T01:34:45.4
Examining file ./1205319_g336_uvot_sources_image.fits
The exposure ID is 725592885
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 2 detected source(s) for 1205319_g336
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 245.2056 , 58.1064 with radius 2.00 arc min.
n_usno: 51 n_gsc: 50
Bright star catalog has no entries brighter than 12 mag
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 1205319_g336.
Acceptable entries have no ID, XRT distances < 5.25", 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=245.1970 (16:20:47.28) DEC=58.1200 (+58:07:12.0)
XRT distances are from RA=245.2144 (16:20:51.45) DEC=58.1239 (+58:07:26.2)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1205319_g336 with genie
ra=245.20650 (16:20:49.56) dec=58.10474 (+58:06:17.0) +/- 0.7" mag=16.05+/-0.14
dist=70.7 REFID=1 major=2.1 minor=1.3 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 57.8 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
245.2046 58.1055 4.6 -1 USNO-B1 15.75 14.71 15.17 *
245.1972 58.1036 18.2 -1 USNO-B1 20.75 19.71 20.17
245.2047 58.1053 4.1 -1 GSC2.3 14.64 15.76 14.56 *
245.1972 58.1036 18.2 -1 GSC2.3 18.88 20.64 19.46
245.2148 58.1018 19.1 -1 GSC2.3 20.42 99.99 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 1 in the list of sources is a candidate afterglow for 1205319_g336 with genie
ra=245.20466 (16:20:49.12) dec=58.10802 (+58:06:28.9) +/- 0.8" mag=16.58+/-0.14
dist=60.2 REFID=2 major=1.8 minor=1.5 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 45.5 arc sec from the BAT position.
Found 6 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
245.2046 58.1055 9.0 -1 USNO-B1 15.75 14.71 15.17 *
245.1961 58.1069 16.9 -1 USNO-B1 20.11 18.29 19.10
245.2010 58.1118 15.4 -1 USNO-B1 19.16 17.45 18.20
245.2047 58.1053 9.6 -1 GSC2.3 14.64 15.76 14.56 *
245.1961 58.1069 16.8 -1 GSC2.3 18.08 20.12 19.03
245.2010 58.1117 15.1 -1 GSC2.3 17.37 19.24 17.73
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 65345.344 counts in the bkg source region of 6117.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 10.683 counts/pixel (5-sig UL in 4" is 19.18 mag) for 1205319_g336
There are 2085.7332 counts in the xrt source region of 201.00000 pixels.
Rate in xrt region with 8 arcsec radius is 10.377 counts/pixel for 1205319_g336
There are 13379.001 counts in the xrt_bkg source region of 1247.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 10.729 counts/pixel (5-sig UL in 4" is 19.18 mag) for 1205319_g336
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 19.73, XRT distances < 5.25",
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: 1205319_725592885_231230d12h20m38s946222usUT_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(245.2066,58.1166,45")
fk5;-circle(245.206504274394,58.1047353965709,6")
fk5;-circle(245.204663952224,58.1080159010292,6")
Region file: 1205319_725592885_231230d12h20m38s946222usUT_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(245.21437,58.12394,8")
Region file: 1205319_725592885_231230d12h20m38s946222usUT_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(245.21437,58.12394,25")
fk5;-circle(245.21437,58.12394,15")
image paragraph message for exposure 2 of trigger 1205319
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 GRB231230 (Swift/BAT trigger 1205319) at 01:29:08 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
304 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 0.015.
------- notes for trigger 1205319 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 231230d12h20m42s228021usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1205319
-expid=725592885 -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/1205319/
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 725592885.40664 or about 2023:364:01:34:40 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 2 source(s) in Genie image catalog. Found 2 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 19.73 mag. Found 49 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 8% of the
Genie image region. The closest Genie source has ra= 245.2047 dec= 58.1080
mag=16.58 sep=60.23".
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?
725592885 303 U srclist data are not available.
725592885 303 U image found no candidates.
List afterglow candidates for other finding charts.
725592726 144 WHITE srclist found no candidates.
725592726 144 WHITE image found no candidates.
725593442 860 WHITE srclist found no candidates.
725593442 860 WHITE image found no candidates.
------- Tokens for Quick GCN -------