srclist overlap message for exposure 3 of trigger 1150107
uvot_overlap.pl vrs. 2010-12-20b fem started at 230121d06h04m28s745297usUT
The observation of trigger 1150107 started 2023-01-21T05:59:08.4
Examining file 1150107_g890_uvot_sky_srclist.fits
The exposure ID is 695973548
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (70.2419,44.5299) with a roll angle of 281.6
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (70.2670,44.5250) with a radius of 3.000 arc min
This is 1.114 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 28.27 sq. arc min or 1.00 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 0.323 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 0.022 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 3 of trigger 1150107
find_uvot_ag.pl vrs. 2020-10-30 fem started at 230121d06h04m30s038628usUT
Observation start time is 2023-01-21T05:59:08.4
Examining file 1150107_g890_uvot_catalog_srclist.fits
The exposure ID is 695973548
The exposure is 149.860 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1150107_g890
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 1150107_g890 has mag 19.35
Aspect correction adds -0.00125 degrees (-0.300 sec of time = -3.21 arc sec) to RA
Aspect correction adds -0.00116 degrees (-4.17 arcsec) to Dec
Total aspect correction is 5.27 arcsec
Star catalogs centered at 70.2398 , 44.5197 with radius 8.58 arc min.
n_usno: 1953 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 8.50646
RA DEC Mag Color
bright star 0: 70.24719 (04:40:59.33) 44.53037 (+44:31:49.3) 10.55 USNO-V
bright star 1: 70.09981 (04:40:23.95) 44.48341 (+44:29:00.3) 11.91 USNO-V
bright star 2: 70.39224 (04:41:34.14) 44.49659 (+44:29:47.7) 8.51 USNO-V
Mean distance difference (CAT_DELTA) for 172 matched entries is 0.690" for 1150107_g890
Mean and std. dev of mag. difference (MAG_DELTA) are 1.630 and 0.538 for 1150107_g890
Found 21 entries without IDs and 0 entries that are acceptable afterglow candidates for 1150107_g890.
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.
18 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 NO acceptable entries.
Unidentified entry closest to XRT position is no. 0:
ra= 70.24800 dec= 44.53072 +/- 1.1" mag=14.61+/-0.35 dist=3.4 REFID=41
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:
Unmatched source ra=70.24800 (04:40:59.52) dec=44.53072 (+44:31:50.6) +/- 1.1" mag=14.61+/-0.35 dist=3.4 REFID=41
Unmatched source ra=70.24693 (04:40:59.26) dec=44.53152 (+44:31:53.5) +/- 1.1" mag=14.78+/-0.35 dist=6.5 REFID=115
Unmatched source ra=70.24681 (04:40:59.23) dec=44.53142 (+44:31:53.1) +/- 1.1" mag=13.86+/-0.35 dist=6.7 REFID=30
Unmatched source ra=70.24687 (04:40:59.25) dec=44.52979 (+44:31:47.3) +/- 1.1" mag=15.13+/-0.35 dist=7.4 REFID=55
Unmatched source ra=70.25298 (04:41:00.72) dec=44.53090 (+44:31:51.2) +/- 1.1" mag=19.03+/-0.35 dist=9.4 REFID=190
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 19.22, XRT distances < 12.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 3 of trigger 1150107
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no image afterglow info
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
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 860 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. Results from the 2.7'x2.7' sub-image
are not available at this time. 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 230121d06h04m32s904935usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1150107
-expid=695973548 -msg_srclist
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. BAT position found.
UVOT exposure began at MET 695973548.38628 or about 2023:021:05:59:03 UT
Found 1949 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 18% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 21 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 19.35 mag.
Found 5 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 70.2480 dec= 44.5307 mag=14.61 sep=3.41".
The closest srclist source has ra= 70.2480 dec= 44.5307 mag=14.61 sep=3.41".
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 860 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 04:40:59.52 = 70.24800
DEC(J2000) = +44:31:50.6 = 44.53072
with a 90%-confidence error radius of about 1.10 arc sec. This position is 3.41
arc sec. from the center of the XRT error circle. The estimated magnitude is
14.61 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?
695973548 860 WHITE srclist found no candidates.
695973548 860 WHITE image data are not available.
List afterglow candidates for other finding charts.
695972811 123 WHITE srclist found no candidates.
695972811 123 WHITE image found no candidates.
695972969 281 U srclist found no candidates.
695972969 281 U image found no candidates.
------- Tokens for Quick GCN -------