srclist overlap message for exposure 1 of trigger 1125809
uvot_overlap.pl vrs. 2010-12-20b fem started at 220930d15h37m52s098575usUT
The observation of trigger 1125809 started 2022-09-30T11:15:21.6
Examining file ./1125809_g208_uvot_sky_srclist.fits
The exposure ID is 686229321
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (64.7421,13.3538) with a roll angle of 85.0
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (64.7370,13.3520) with a radius of 3.000 arc min
This is 0.319 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 (64.7172,13.3490) with a radius of 0.037 arc min
This is 1.485 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1125809
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220930d15h37m54s238133usUT
Observation start time is 2022-09-30T11:15:21.6
Examining file ./1125809_g208_uvot_catalog_srclist.fits
The exposure ID is 686229321
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 15 detected source(s) for 1125809_g208
Aspect correction adds 0.00115 degrees (0.276 sec of time = 4.02 arc sec) to RA
Aspect correction adds -0.00007 degrees (-0.24 arcsec) to Dec
Total aspect correction is 4.03 arcsec
Star catalogs centered at 64.7383 , 13.3489 with radius 6.12 arc min.
n_usno: 264 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 15 matched entries is 0.742" for 1125809_g208
Mean and std. dev of mag. difference (MAG_DELTA) are 1.936 and 0.236 for 1125809_g208
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1125809_g208.
Acceptable entries have no ID, XRT distances < 5.5", 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=64.7370 (04:18:56.88) DEC=13.3520 (+13:21:07.2)
XRT distances are from RA=64.7172 (04:18:52.12) DEC=13.3490 (+13:20:56.5)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
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 < 5.5",
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 1 of trigger 1125809
------ Start for Possible Stand-alone Circular ----
In response to GRB220930 (Swift/BAT trigger 1125809) at 11:11:52 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 179 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 100% of
the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag.
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 expected extinction corresponding to E(B-V) of
0.639.
------- notes for trigger 1125809 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220930d15h37m57s406592usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1125809
-expid=686229321 -meonly -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/1125809/
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 686229321.58446 or about 2022:273:11:15:16 UT
Found 260 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 15 sources in
srclist catalog. Found 0 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 6 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 20.56 mag. Found 47 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 4% of the
Genie image region.
Genie image analysis:
Found 72165.7 counts in the large background region of 6086.0 pixels or a rate
of 11.858 counts/pixel in a radius of 45.0 arcsec. Based on this background,
the typical 5-sigma UL at a random point in the Genie image is 19.83 mag. for a
4-arcsec aperture.
Found 2442.6 counts in the XRT position region of 200.0 pixels or a rate of
12.213 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.461 +/- 0.357 (1-sigma) cps or
20.44 mag and a range from 19.82 to 22.05 mag. The 3-sigma UL at the XRT
position is 1.531 cps or 19.14 mag. The closest srclist source has ra= 64.7241
dec= 13.3466 mag=19.28 sep=25.69". The closest Genie source has ra= 64.7135
dec= 13.3543 mag=19.12 sep=22.81".
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?
686229321 178 WHITE srclist found no candidates.
686229321 178 WHITE image found no candidates.
List afterglow candidates for other finding charts.
686230012 869 WHITE srclist found no candidates.
686230012 869 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 13.34903
GRB_ERROR: 5.5
GRB_RA: 64.71717
IMAGE_START_TIME: 11:15:16
MAGNITUDE: 19.1
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT