image overlap message for exposure 1 of trigger 1220158
uvot_overlap.pl vrs. 2010-12-20b fem started at 240315d09h53m29s066491usUT
The observation of trigger 1220158 started 2024-03-15T09:40:32.8
Examining file 1220158_g137_uvot_sky_image.fits
The exposure ID is 732188432
The exposure time is 149.813 (seconds)
The filter is WHITE.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
*** Warning -- found 1242 null pixels in the image.
The uvot region is centered at (243.1565,-15.5281) with a roll angle of 98.2
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 (243.2300,-15.5300) with a radius of 3.000 arc min
This is 4.249 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 0.37 sq. arc min or 0.01 of the BAT error circle
The XRT error circle is centered at (243.1510,-15.5269) with a radius of 0.078 arc min
This is 0.327 arc min from the center of the uvot region
The area of the XRT error circle is 0.019 sq. arc min
The UVOT/XRT overlap is 0.019 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1220158
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240315d09h53m30s048503usUT
Observation start time is 2024-03-15T09:40:32.8
Examining file 1220158_g137_uvot_sources_image.fits
The exposure ID is 732188432
The exposure is 149.813 sec.
The bin size is 2 pixels
The filter is WHITE
There are 1 detected source(s) for 1220158_g137
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 243.1610 , -15.5519 with radius 2.00 arc min.
n_usno: 109 n_gsc: 86
Bright star catalog has no entries brighter than 12 mag
Found 1 entries without IDs and 0 entries that are acceptable afterglow candidates for 1220158_g137.
Acceptable entries have no ID, XRT distances < 11.75", 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=243.2300 (16:12:55.20) DEC=-15.5300 (-15:31:48.0)
XRT distances are from RA=243.1510 (16:12:36.24) DEC=-15.5269 (-15:31:36.8)
*** WARNING 100 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 0:
ra=243.16101 dec=-15.55194 +/- 0.8" mag=18.48+/-0.15 dist=96.6 REFID=1 flag=0
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
243.1492 -15.5308 15.5 -1 USNO-B1 21.23 19.15 20.07
243.1547 -15.5243 15.9 -1 USNO-B1 17.52 16.61 17.01
243.1548 -15.5240 17.0 -1 USNO-B1 20.46 17.93 19.05
243.1550 -15.5231 19.6 -1 USNO-B1 20.76 19.29 19.94
243.1544 -15.5243 15.1 -1 GSC2.3 16.87 17.57 99.99
243.1549 -15.5228 19.9 -1 GSC2.3 19.52 99.99 99.99
The closest star is 15.07" away.
List UVOT sources within 20" of the XRT position:
There are 77565.805 counts in the bkg source region of 6315.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 12.283 counts/pixel (5-sig UL in 4" is 19.99 mag) for 1220158_g137
There are 839.72449 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 4.241 counts/pixel for 1220158_g137
There are 9476.5703 counts in the xrt_bkg source region of 1244.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 7.618 counts/pixel (5-sig UL in 4" is 20.25 mag) for 1220158_g137
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 20.54, XRT distances < 11.75",
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: 1220158_732188432_240315d09h53m30s048503usUT_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(243.1565,-15.5281,45")
Region file: 1220158_732188432_240315d09h53m30s048503usUT_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(243.15100,-15.52689,8")
Region file: 1220158_732188432_240315d09h53m30s048503usUT_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(243.15100,-15.52689,25")
fk5;-circle(243.15100,-15.52689,15")
image paragraph message for exposure 1 of trigger 1220158
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no aspect solution, damaged image (negative pixel value)
SRCLIST PROBLEM: no srclist afterglow info
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB240315 (Swift/BAT trigger 1220158) at 09:38:14 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 104 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, damaged image (negative pixel value).
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 0.231.
------- notes for trigger 1220158 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240315d09h53m31s658243usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1220158
-expid=732188432 -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/1220158/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
The Genie image appears to be DAMAGED with a min. value of -8598.734375.
XRT position found for Genie image. BAT position found.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 732188432.82828 or about 2024:075:09:40:27 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 20.54 mag. Found 105 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 18% of the
Genie image region. The Genie image is INCOMPLETE with 1242 null pixels.
The closest Genie source has ra= 243.1610 dec= -15.5519 mag=18.48 sep=96.62".
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?
732188432 104 WHITE srclist data are not available.
732188432 104 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------