image overlap message for exposure 1 of trigger 1150107
uvot_overlap.pl vrs. 2010-12-20b fem started at 230121d05h52m18s612817usUT
The observation of trigger 1150107 started 2023-01-21T05:46:51.5
Examining file 1150107_g153_uvot_sky_image.fits
The exposure ID is 695972811
The exposure time is 149.879 (seconds)
The filter is WHITE.
*** Warning -- found 21681 null pixels in the image.
The uvot region is centered at (70.2410,44.5297) with a roll angle of 281.6
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 (70.2670,44.5250) with a radius of 3.000 arc min
This is 1.149 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 (70.2493,44.5309) with a radius of 0.083 arc min
This is 0.362 arc min from the center of the uvot region
The area of the XRT error circle is 0.022 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 1 of trigger 1150107
find_uvot_ag.pl vrs. 2020-10-30 fem started at 230121d05h52m19s897877usUT
Observation start time is 2023-01-21T05:46:51.5
Examining file 1150107_g153_uvot_catalog_image.fits
The exposure ID is 695972811
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 3 detected source(s) for 1150107_g153
Aspect correction adds -0.00043 degrees (-0.102 sec of time = -1.09 arc sec) to RA
Aspect correction adds -0.00071 degrees (-2.56 arcsec) to Dec
Total aspect correction is 2.78 arcsec
Star catalogs centered at 70.2408 , 44.5221 with radius 2.41 arc min.
n_usno: 149 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.54854
RA DEC Mag Color
bright star 0: 70.24719 (04:40:59.33) 44.53037 (+44:31:49.3) 10.55 USNO-V
Mean distance difference (CAT_DELTA) for 3 matched entries is 1.045" for 1150107_g153
Mean and std. dev of mag. difference (MAG_DELTA) are 1.751 and 0.581 for 1150107_g153
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1150107_g153.
Acceptable entries have no ID, XRT distances < 12.5", 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=70.2670 (04:41:04.08) DEC=44.5250 (+44:31:30.0)
XRT distances are from RA=70.2493 (04:40:59.83) DEC=44.5309 (+44:31:51.2)
Found 1 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
70.2472 44.5304 5.7 -1 USNO-B1 10.98 10.20 10.55
The closest star is 5.73" away.
List UVOT sources within 10" 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.
There are 0.0000000 counts in the xrt_bkg source region of 0.0000000 pixels.
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 19.42, XRT distances < 12.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1150107_695972811_230121d05h52m19s897877usUT_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(70.2410,44.5297,45")
Region file: 1150107_695972811_230121d05h52m19s897877usUT_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(70.2493,+44.5309,8")
Region file: 1150107_695972811_230121d05h52m19s897877usUT_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(70.2493,+44.5309,25")
fk5;-circle(70.2493,+44.5309,15")
image paragraph message for exposure 1 of trigger 1150107
IMAGE PROBLEM: no overlap
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB230121 (Swift/BAT trigger 1150107) at 05:44:17 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 123 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 mag. No correction has been made for the large, but
uncertain, extinction expected.
------- notes for trigger 1150107 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 230121d05h52m21s592849usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1150107
-expid=695972811 -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/1150107/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position. XRT position found for srclist. XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 695972811.50868 or about 2023:021:05:46:46 UT
Found 1046 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 18% of the srclist region. Found 121 sources in
srclist catalog. Found 28 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 3 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 19.42 mag. Found 145 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 17% of the
Genie image region. The Genie image is INCOMPLETE with 21681 null pixels.
Found no Genie image background information.
Found 8 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 70.2485 dec= 44.5304 mag=19.22 sep=2.86".
The closest srclist source has ra= 70.2485 dec= 44.5304 mag=19.22 sep=2.86".
The closest Genie source has ra= 70.2439 dec= 44.5053 mag=19.87 sep=93.01".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 123 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 04:40:59.63 = 70.24847
DEC(J2000) = +44:31:49.3 = 44.53037
with a 90%-confidence error radius of about 1.10 arc sec. This position is 2.86
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.22 with a 1-sigma error of about 0.35. No correction has been made for the
large, but uncertain, extinction expected.
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?
695972811 123 WHITE srclist found no candidates.
695972811 123 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 44.53090
GRB_ERROR: 12.5
GRB_RA: 70.24930
IMAGE_START_TIME: 05:46:46
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT