srclist overlap message for exposure 2 of trigger 835200
uvot_overlap.pl vrs. 2010-12-20b fem started at 180602d10h39m23s664065usUT
The observation of trigger 835200 started 2018-06-02T08:20:03.3
Examining file ./835200_g312_uvot_sky_srclist.fits
The exposure ID is 549620403
The exposure time is undefined.
The filter is U.
The uvot region is centered at (142.3275,32.0741) with a roll angle of 280.9
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 (142.3390,32.0930) with a radius of 3.000 arc min
This is 1.275 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 28.00 sq. arc min or 0.99 of the BAT error circle
The XRT error circle is centered at (142.3318,32.0671) with a radius of 0.030 arc min
This is 0.475 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 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 835200
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180602d10h39m33s100886usUT
Observation start time is 2018-06-02T08:20:03.3
Examining file ./835200_g312_uvot_catalog_srclist.fits
The exposure ID is 549620403
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 9 detected source(s) for 835200_g312
Aspect correction adds -0.00026 degrees (-0.063 sec of time = -0.80 arc sec) to RA
Aspect correction adds 0.00094 degrees ( 3.38 arcsec) to Dec
Total aspect correction is 3.47 arcsec
Star catalogs centered at 142.3523 , 32.0804 with radius 5.57 arc min.
n_usno: 456 n_gsc: 222
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.60
RA DEC Mag Color
bright star 0: 142.43902 (09:29:45.36) 32.10993 (+32:06:35.7) 10.60 USNO-R
bright star 1: 142.43289 (09:29:43.89) 32.13081 (+32:07:50.9) 11.87 USNO-V
Mean distance difference (CAT_DELTA) for 9 matched entries is 0.386" for 835200_g312
Mean and std. dev of mag. difference (MAG_DELTA) are 1.192 and 0.656 for 835200_g312
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 835200_g312.
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=142.3390 (09:29:21.36) DEC=32.0930 (+32:05:34.8)
XRT distances are from RA=142.3318 (09:29:19.63) DEC=32.0671 (+32:04:01.6)
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 835200
------ Start for Possible Stand-alone Circular ----
In response to GRB180602 (Swift/BAT trigger 835200) at 08:14:50 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
291 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
0.02.
------- notes for trigger 835200 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180602d10h39m34s897628usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=835200
-expid=549620403 -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/835200/
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 549620403.32594 or about 2018:153:08:19:58 UT
Found 452 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 10% of the srclist region. Found 9 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
18.12 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 19.93 mag. Found 52 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 7% of the
Genie image region. The Genie image is INCOMPLETE with 3759 null pixels.
Genie image analysis:
Found 45368.5 counts in the large background region of 6078.0 pixels or a rate
of 7.464 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 19.41 mag. for a
4-arcsec aperture.
Found 1476.8 counts in the XRT position region of 203.0 pixels or a rate of
7.275 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.297 +/- 0.167 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.500 cps or 19.13 mag. The closest srclist
source has ra= 142.3385 dec= 32.0793 mag=15.41 sep=48.52". The closest Genie
source has ra= 142.3396 dec= 32.0706 mag=19.33 sep=27.02".
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?
549620403 291 U srclist found no candidates.
549620403 291 U image found no candidates.
List afterglow candidates for other finding charts.
549620245 133 WHITE srclist found no candidates.
549620245 133 WHITE image found no candidates.
549620979 867 WHITE srclist found no candidates.
549620979 867 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 32.06711
GRB_ERROR: 5
GRB_RA: 142.33179
IMAGE_START_TIME: 08:19:58
MAGNITUDE: 19.1
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT