srclist overlap message for exposure 1 of trigger 987016
uvot_overlap.pl vrs. 2010-12-20b fem started at 200807d02h50m25s335371usUT
The observation of trigger 987016 started 2020-08-06T15:30:41.6
Examining file ./987016_g111_uvot_sky_srclist.fits
The exposure ID is 618420641
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (52.9135,37.0817) with a roll angle of 80.1
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 (52.9050,37.0820) with a radius of 3.000 arc min
This is 0.407 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 (52.9321,37.0787) with a radius of 0.028 arc min
This is 0.909 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 1 of trigger 987016
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200807d02h50m30s042317usUT
Observation start time is 2020-08-06T15:30:41.6
Examining file ./987016_g111_uvot_catalog_srclist.fits
The exposure ID is 618420641
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 77 detected source(s) for 987016_g111
Aspect correction adds 0.00085 degrees (0.205 sec of time = 2.45 arc sec) to RA
Aspect correction adds 0.00057 degrees ( 2.04 arcsec) to Dec
Total aspect correction is 3.19 arcsec
Star catalogs centered at 52.9150 , 37.0800 with radius 5.66 arc min.
n_usno: 451 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.90852
RA DEC Mag Color
bright star 0: 52.86212 (03:31:26.91) 37.12666 (+37:07:36.0) 10.91 USNO-V
bright star 1: 52.83035 (03:31:19.28) 37.13000 (+37:07:48.0) 11.98 USNO-V
Mean distance difference (CAT_DELTA) for 75 matched entries is 0.666" for 987016_g111
Mean and std. dev of mag. difference (MAG_DELTA) are 1.111 and 0.551 for 987016_g111
Found 5 entries without IDs and 0 entries that are acceptable afterglow candidates for 987016_g111.
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.
3 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=52.9050 (03:31:37.20) DEC=37.0820 (+37:04:55.2)
XRT distances are from RA=52.9321 (03:31:43.71) DEC=37.0787 (+37:04:43.5)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 63:
ra= 52.93429 dec= 37.00919 +/- 1.1" mag=19.72+/-0.35 dist=250.5 REFID=75
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",
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 987016
------ Start for Possible Stand-alone Circular ----
In response to GRB200806 (Swift/BAT trigger 987016) at 15:28:49 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 86 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
0.42.
------- notes for trigger 987016 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200807d02h50m37s364309usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=987016
-expid=618420641 -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/987016/
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 618420641.5651 or about 2020:219:15:30:36 UT
Found 447 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 9% of the srclist region. Found 77 sources in
srclist catalog. Found 5 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 14 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 20.37 mag. Found 97 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
9% of the Genie image region.
Genie image analysis:
Found 101999.1 counts in the large background region of 6087.0 pixels or a rate
of 16.757 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 19.82 mag. for a
4-arcsec aperture.
Found 3526.1 counts in the XRT position region of 201.0 pixels or a rate of
17.543 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.988 +/- 0.429 (1-sigma) cps or
19.79 mag and a range from 19.40 to 20.41 mag. The 3-sigma UL at the XRT
position is 2.275 cps or 18.89 mag. The closest srclist source has ra= 52.9261
dec= 37.0775 mag=15.94 sep=17.93". The closest Genie source has ra= 52.9301
dec= 37.0824 mag=19.11 sep=14.45".
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?
618420641 85 WHITE srclist found no candidates.
618420641 85 WHITE image found no candidates.
List afterglow candidates for other finding charts.
618420854 298 U srclist found no candidates.
618420854 298 U image found no candidates.
618421431 875 WHITE srclist found no candidates.
618421431 875 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 37.07875
GRB_ERROR: 5
GRB_RA: 52.93212
IMAGE_START_TIME: 15:30:36
MAGNITUDE: 18.9
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT