image overlap message for exposure 4 of trigger 1175438
uvot_overlap.pl vrs. 2010-12-20b fem started at 230618d21h42m20s195921usUT
The observation of trigger 1175438 started 2023-06-18T06:52:48.4
Examining file ./1175438_g10895_uvot_sky_image.fits
The exposure ID is 708763968
The exposure time is 249.935 (seconds)
The filter is B.
The uvot region is centered at (196.5991,3.3049) with a roll angle of 305.7
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 (196.5880,3.3060) with a radius of 3.000 arc min
This is 0.667 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 (196.6031,3.3035) with a radius of 0.033 arc min
This is 0.257 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 4 of trigger 1175438
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230618d21h42m50s444124usUT
Observation start time is 2023-06-18T06:52:48.4
Examining file ./1175438_g10895_uvot_catalog_image.fits
The exposure ID is 708763968
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is B
There are 2 detected source(s) for 1175438_g10895
Aspect correction adds 0.00004 degrees (0.009 sec of time = 0.14 arc sec) to RA
Aspect correction adds -0.00019 degrees (-0.69 arcsec) to Dec
Total aspect correction is 0.71 arcsec
Star catalogs centered at 196.6060 , 3.3026 with radius 2.50 arc min.
n_usno: 31 n_gsc: 26
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 2 matched entries is 0.325" for 1175438_g10895
Mean and std. dev of mag. difference (MAG_DELTA) are 1.199 and 0.285 for 1175438_g10895
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1175438_g10895.
Acceptable entries have no ID, XRT distances < 5", 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=196.5880 (13:06:21.12) DEC= 3.3060 (+03:18:21.6)
XRT distances are from RA=196.6031 (13:06:24.75) DEC= 3.3035 (+03:18:12.6)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 55525.324 counts in the bkg source region of 6308.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 8.802 counts/pixel (5-sig UL in 4" is 20.06 mag) for 1175438_g10895
There are 1654.8787 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 8.358 counts/pixel for 1175438_g10895
There are 11029.248 counts in the xrt_bkg source region of 1248.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 8.838 counts/pixel (5-sig UL in 4" is 20.06 mag) for 1175438_g10895
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 20.62, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1175438_708763968_230618d21h42m50s444124usUT_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(196.5991,3.3049,45")
Region file: 1175438_708763968_230618d21h42m50s444124usUT_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(196.60313,3.30350,8")
Region file: 1175438_708763968_230618d21h42m50s444124usUT_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(196.60313,3.30350,25")
fk5;-circle(196.60313,3.30350,15")
image paragraph message for exposure 4 of trigger 1175438
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: unexpected filter, no aspect solution
SRCLIST PROBLEM: no srclist afterglow info, unexpected filter
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB230618 (Swift/BAT trigger 1175438) at 03:51:12 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the UVW2 filter starting
11120 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 unexpected filter, 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 0.025.
------- notes for trigger 1175438 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230618d21h43m01s080292usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1175438
-expid=708764224 -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/1175438/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
*** Warning -- Processing cannot handle uvw2 filter.
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 708764224.80088 or about 2023:169:06:56:59 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 1 source(s) in Genie image catalog. Found 1 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 10.00 mag. Found 16 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 2% of the
Genie image region. The closest Genie source has ra= 196.5987 dec= 3.3103
mag=20.80 sep=29.20".
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?
708764224 11119 UVW2 srclist data are not available.
708764224 11119 UVW2 image found no candidates.
List afterglow candidates for other finding charts.
708753241 136 WHITE srclist found no candidates.
708753241 136 ? image data are not available.
708753976 871 WHITE srclist found no candidates.
708753976 871 WHITE image found no candidates.
708763711 10606 U srclist found no candidates.
708763711 10606 U image found no candidates.
708763968 10863 B srclist found no candidates.
708763968 10863 B image found no candidates.
708764480 11375 V srclist found no candidates.
708764480 11375 V image found no candidates.
708764735 11630 ? srclist data are not available.
708764735 11630 UVM2 image found no candidates.
708764990 11885 UVW1 srclist found no candidates.
708764990 11885 UVW1 image found no candidates.
708765245 12140 U srclist found no candidates.
708765245 12140 U image found no candidates.
708765500 12395 B srclist found no candidates.
708765500 12395 B image found no candidates.
708765757 12652 ? srclist data are not available.
708765757 12652 UVW2 image found no candidates.
------- Tokens for Quick GCN -------