srclist overlap message for exposure 2 of trigger 870201
uvot_overlap.pl vrs. 2010-12-20b fem started at 181103d10h00m04s132073usUT
The observation of trigger 870201 started 2018-11-03T04:27:03.2
Examining file ./870201_g272_uvot_sky_srclist.fits
The exposure ID is 562912023
The exposure time is undefined.
The filter is U.
The uvot region is centered at (197.1134,52.2283) with a roll angle of 158.2
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 (197.1090,52.2300) with a radius of 3.000 arc min
This is 0.191 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 (197.1159,52.2259) with a radius of 0.027 arc min
This is 0.174 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 870201
find_uvot_ag.pl vrs. 2017-02-17 fem started at 181103d10h00m32s415627usUT
Observation start time is 2018-11-03T04:27:03.2
Examining file ./870201_g272_uvot_catalog_srclist.fits
The exposure ID is 562912023
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 23 detected source(s) for 870201_g272
Aspect correction adds 0.00011 degrees (0.025 sec of time = 0.23 arc sec) to RA
Aspect correction adds -0.00060 degrees (-2.16 arcsec) to Dec
Total aspect correction is 2.18 arcsec
Star catalogs centered at 197.1077 , 52.2428 with radius 8.61 arc min.
n_usno: 542 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.51956
RA DEC Mag Color
bright star 0: 196.97208 (13:07:53.30) 52.33973 (+52:20:23.0) 10.52 USNO-V
Mean distance difference (CAT_DELTA) for 19 matched entries is 0.652" for 870201_g272
Mean and std. dev of mag. difference (MAG_DELTA) are 1.495 and 1.107 for 870201_g272
Found 4 entries without IDs and 0 entries that are acceptable afterglow candidates for 870201_g272.
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.
4 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=197.1090 (13:08:26.16) DEC=52.2300 (+52:13:48.0)
XRT distances are from RA=197.1159 (13:08:27.81) DEC=52.2259 (+52:13:33.1)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 19:
ra=196.97133 dec= 52.33678 +/- 1.1" mag=18.21+/-0.35 dist=510.4 REFID=16
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 18.12, XRT distances < 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 2 of trigger 870201
------ Start for Possible Stand-alone Circular ----
In response to GRB181103 (Swift/BAT trigger 870201) at 04:22:30 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
250 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 19.2 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 18.0 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.01.
------- notes for trigger 870201 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 181103d10h00m43s519490usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=870201
-expid=562912023 -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/870201/
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 562912023.24822 or about 2018:307:04:26:58 UT
Found 538 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 23 sources in
srclist catalog. Found 4 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 1 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 20.09 mag. Found 21 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 3% of the
Genie image region.
Genie image analysis:
Found 35212.4 counts in the large background region of 6310.0 pixels or a rate
of 5.580 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 19.57 mag. for a
4-arcsec aperture.
Found 1159.0 counts in the XRT position region of 199.0 pixels or a rate of
5.824 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.271 +/- 0.146 (1-sigma) cps or
19.80 mag and a range from 19.33 to 20.64 mag. The 3-sigma UL at the XRT
position is 0.709 cps or 18.75 mag. The closest srclist source has ra= 197.0554
dec= 52.2252 mag=16.48 sep=133.38". The closest Genie source has ra= 197.0818
dec= 52.2353 mag=19.41 sep=82.51".
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?
562912023 250 U srclist found no candidates.
562912023 250 U image found no candidates.
List afterglow candidates for other finding charts.
562911865 92 WHITE srclist found no candidates.
562911865 92 WHITE image found no candidates.
562912647 874 WHITE srclist found no candidates.
562912647 874 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 52.22586
GRB_ERROR: 5
GRB_RA: 197.11588
IMAGE_START_TIME: 04:26:58
MAGNITUDE: 18.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT