image overlap message for exposure 2 of trigger 1152764
uvot_overlap.pl vrs. 2010-12-20b fem started at 230205d17h49m22s668060usUT
The observation of trigger 1152764 started 2023-02-05T10:34:40.3
Examining file ./1152764_g288_uvot_sky_image.fits
The exposure ID is 697286080
The exposure time is 249.935 (seconds)
The filter is U.
*** Warning -- found 22021 null pixels in the image.
The uvot region is centered at (202.0803,46.6864) with a roll angle of 81.6
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 (202.0720,46.6840) with a radius of 3.000 arc min
This is 0.373 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 5.60 sq. arc min or 0.20 of the BAT error circle
The XRT error circle is centered at (202.0710,46.7252) with a radius of 0.032 arc min
This is 2.358 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 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1152764
find_uvot_ag.pl vrs. 2020-10-30 fem started at 230205d17h49m34s773211usUT
Observation start time is 2023-02-05T10:34:40.3
Examining file ./1152764_g288_uvot_sources_image.fits
The exposure ID is 697286080
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 0 detected source(s) for 1152764_g288
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 202.0742 , 46.6771 with radius 2.00 arc min.
n_usno: 80 n_gsc: 0
*** WARNING -- XRT position is outside star catalog search region.
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.23256
RA DEC Mag Color
bright star 0: 202.04245 (13:28:10.19) 46.67203 (+46:40:19.3) 10.23 USNO-V
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1152764_g288.
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=202.0720 (13:28:17.28) DEC=46.6840 (+46:41:02.4)
XRT distances are from RA=202.0710 (13:28:17.03) DEC=46.7252 (+46:43:30.7)
Found 0 entries in star catalog(s) within 20" of the XRT position.
List UVOT sources within 20" of the XRT position:
There are 0.0000000 counts in the bkg source region of 0.0000000 pixels.
Do not compute counts in XRT region because position is too far from center.
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: 1152764_697286080_230205d17h49m34s773211usUT_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(202.0803,46.6864,45")
image paragraph message for exposure 2 of trigger 1152764
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB230205 (Swift/BAT trigger 1152764) at 10:29:51 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
258 seconds after the BAT trigger. No credible afterglow candidate has been
found in the initial data products. The 2.7'x2.7' sub-image covers none of the
XRT error circle. 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 0.036.
------- notes for trigger 1152764 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 230205d17h49m47s638593usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1152764
-expid=697286080 -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/1152764/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 697286080.26274 or about 2023:036:10:34:35 UT
Found 529 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 51 sources in
srclist catalog. Found 25 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 76 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 13% of the
Genie image region. The XRT position was OUTSIDE the star catalog search
region. The Genie image is INCOMPLETE with 22021 null pixels.
Found no Genie image background information. The closest srclist source has ra=
202.0972 dec= 46.7110 mag=15.94 sep=82.52".
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?
697286080 258 U srclist found no candidates.
697286080 258 U image found no candidates.
List afterglow candidates for other finding charts.
697285922 100 WHITE srclist found no candidates.
697285922 100 WHITE image found no candidates.
697286681 859 WHITE srclist found no candidates.
697286681 859 ? image data are not available.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: u
GRB_DEC: 46.72519
GRB_ERROR: 5
GRB_RA: 202.07096
IMAGE_START_TIME: 10:34:35
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT