image overlap message for exposure 2 of trigger 1220160
uvot_overlap.pl vrs. 2010-12-20b fem started at 240315d10h03m55s449117usUT
The observation of trigger 1220160 started 2024-03-15T09:49:55.7
Examining file 1220160_g292_uvot_sky_image.fits
The exposure ID is 732188995
The exposure time is 221.043 (seconds)
The filter is U.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
*** Warning -- found 10710 null pixels in the image.
The uvot region is centered at (242.7302,-15.4707) with a roll angle of 98.4
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 (242.7830,-15.4870) with a radius of 3.000 arc min
This is 3.205 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 2.66 sq. arc min or 0.09 of the BAT error circle
The XRT error circle is centered at (242.7252,-15.4701) with a radius of 0.077 arc min
This is 0.292 arc min from the center of the uvot region
The area of the XRT error circle is 0.018 sq. arc min
The UVOT/XRT overlap is 0.018 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1220160
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240315d10h03m56s438586usUT
Observation start time is 2024-03-15T09:49:55.7
Examining file 1220160_g292_uvot_sources_image.fits
The exposure ID is 732188995
The exposure is 221.043 sec.
The bin size is 2 pixels
The filter is U
There are 1 detected source(s) for 1220160_g292
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 242.7284 , -15.4727 with radius 2.00 arc min.
n_usno: 117 n_gsc: 92
Bright star catalog has no entries brighter than 12 mag
Found 1 entries without IDs and 0 entries that are acceptable afterglow candidates for 1220160_g292.
Acceptable entries have no ID, XRT distances < 11.5", 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=242.7830 (16:11:07.92) DEC=-15.4870 (-15:29:13.2)
XRT distances are from RA=242.7252 (16:10:54.05) DEC=-15.4701 (-15:28:12.4)
*** WARNING 100 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 0:
ra=242.72842 dec=-15.47268 +/- 0.7" mag= NaN+/-0.14 dist=14.5 REFID=1 flag=16
Found 8 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
242.7293 -15.4691 14.6 -1 USNO-B1 20.90 19.40 20.07
242.7304 -15.4688 18.6 -1 USNO-B1 21.44 19.51 20.36
242.7225 -15.4721 11.8 -1 USNO-B1 99.99 20.26 99.99
242.7264 -15.4658 16.2 -1 USNO-B1 99.99 19.34 99.99
242.7266 -15.4656 17.0 -1 USNO-B1 99.99 19.53 99.99
242.7293 -15.4687 15.1 -1 GSC2.3 19.96 21.25 99.99
242.7220 -15.4729 14.9 -1 GSC2.3 20.23 21.99 99.99
242.7265 -15.4656 16.9 -1 GSC2.3 19.56 21.26 99.99
The closest star is 11.79" away.
List UVOT sources within 20" of the XRT position:
Unmatched source ra=242.72842 (16:10:54.82) dec=-15.47268 (-15:28:21.7) +/- 0.7" mag= NaN+/-0.14 dist=14.5 REFID=1 flag=16
There are 3.5825735E+06 counts in the bkg source region of 4255.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 841.968 counts/pixel (5-sig UL in 4" is 16.67 mag) for 1220160_g292
There are 6.9633244E+05 counts in the xrt source region of 177.00000 pixels.
Rate in xrt region with 8 arcsec radius is 3934.082 counts/pixel for 1220160_g292
There are 6.9919681E+05 counts in the xrt_bkg source region of 679.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 1029.745 counts/pixel (5-sig UL in 4" is 16.57 mag) for 1220160_g292
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 17.23, XRT distances < 11.5",
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: 1220160_732188995_240315d10h03m56s438586usUT_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(242.7302,-15.4707,45")
fk5;-circle(242.728416095222,-15.4726815252862,6")
Region file: 1220160_732188995_240315d10h03m56s438586usUT_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(242.7252,-15.4701,8")
Region file: 1220160_732188995_240315d10h03m56s438586usUT_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(242.7252,-15.4701,25")
fk5;-circle(242.7252,-15.4701,15")
fk5;-circle(242.728416095222,-15.4726815252862,6")
image paragraph message for exposure 2 of trigger 1220160
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.
1 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 GRB240315 (Swift/BAT trigger 1220160) at 09:45:02 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 221 seconds with the U filter starting
259 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. Data 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 0.222.
------- notes for trigger 1220160 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240315d10h03m58s614404usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1220160
-expid=732188995 -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/1220160/
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.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 732188995.6947 or about 2024:075:09:49:50 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. 1 source(s) are within 20.0" of the
xrt position. 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
17.23 mag. Found 113 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 19% of the Genie image region. The
Genie image is INCOMPLETE with 10710 null pixels.
Found 1 Genie source(s) within 20.0" of the XRT position. The brightest such
source has ra= 242.7284 dec= -15.4727 mag= NaN sep=14.52". The closest Genie
source has ra= 242.7284 dec= -15.4727 mag= NaN sep=14.52".
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?
732188995 259 ? srclist data are not available.
732188995 259 U image found no candidates.
List afterglow candidates for other finding charts.
732188837 101 ? srclist data are not available.
732188837 101 WHITE image found no candidates.
------- Tokens for Quick GCN -------