image overlap message for exposure 2 of trigger 932608
uvot_overlap.pl vrs. 2010-12-20b fem started at 191101d00h29m04s341546usUT
The observation of trigger 932608 started 2019-10-31T21:29:00.5
Examining file ./932608_g328_uvot_sky_image.fits
The exposure ID is 594250140
The exposure time is 249.935 (seconds)
The filter is U.
*** Warning -- found 23884 null pixels in the image.
The uvot region is centered at (283.2701,47.6338) with a roll angle of 243.8
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 (283.2750,47.6390) with a radius of 3.000 arc min
This is 0.369 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 at most 1.03 sq. arc min or 0.04 of the BAT error circle
The XRT error circle is centered at (283.2895,47.6441) with a radius of 0.032 arc min
This is 0.996 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 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 932608
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191101d00h29m15s397074usUT
Observation start time is 2019-10-31T21:29:00.5
Examining file ./932608_g328_uvot_sources_image.fits
The exposure ID is 594250140
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 0 detected source(s) for 932608_g328
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 283.3084 , 47.6350 with radius 2.00 arc min.
n_usno: 108 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.049
RA DEC Mag Color
bright star 0: 283.29667 (18:53:11.20) 47.62544 (+47:37:31.6) 11.05 USNO-V
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 932608_g328.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=283.2750 (18:53:06.00) DEC=47.6390 (+47:38:20.4)
XRT distances are from RA=283.2895 (18:53:09.48) DEC=47.6441 (+47:38:38.6)
Found 2 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
283.2955 47.6415 17.2 -1 USNO-B1 17.10 15.94 16.46
283.2930 47.6477 15.5 -1 USNO-B1 99.99 20.57 99.99
The closest star is 15.53" away.
List UVOT sources within 20" of the XRT position:
There are 0.0000000 counts in the bkg source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
XRT source is too far (59.8262449131801") from center -- do not compute local background.
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 18.32, XRT distances < 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: 932608_594250140_191101d00h29m15s397074usUT_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(283.2701,47.6338,45")
Region file: 932608_594250140_191101d00h29m15s397074usUT_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(283.28950,47.64406,8")
image paragraph message for exposure 2 of trigger 932608
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: damaged image (negative pixel value)
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB191031 (Swift/BAT trigger 932608) at 21:23:31 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
305 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 damaged image (negative pixel value). The 8'x8' region for the list
of sources generated on-board covers 100% of the XRT error circle. The list of
sources is typically complete to about 18.0 mag. No correction has been made
for the expected extinction corresponding to E(B-V) of 0.08.
------- notes for trigger 932608 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191101d00h29m18s864776usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=932608
-expid=594250140 -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/932608/
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 -10820.214844.
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 594250140.45116 or about 2019:304:21:28:55 UT
Found 1825 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 16% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 53 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 mag.
Found 0 source(s) in Genie image catalog. Found 0 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 18.32 mag. Found 104 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 23884 null pixels.
The number of srclist sources filled the available telemetry. The weakest
source detected was 18.83 mag. The closest srclist source has ra= 283.2954 dec=
47.6413 mag=18.41 sep=17.44".
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?
594250140 305 U srclist found no candidates.
594250140 305 U image found no candidates.
List afterglow candidates for other finding charts.
594249927 92 WHITE srclist found no candidates.
594249927 92 WHITE image found no candidates.
594250694 859 WHITE srclist found no candidates.
594250694 859 WHITE image found no candidates.
------- Tokens for Quick GCN -------