image overlap message for exposure 1 of trigger 863186
uvot_overlap.pl vrs. 2010-12-20b fem started at 180924d19h30m33s516957usUT
The observation of trigger 863186 started 2018-09-24T15:24:06.8
Examining file ./863186_g103_uvot_sky_image.fits
The exposure ID is 559495446
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (49.2101,-58.5326) with a roll angle of 128.0
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (49.1610,-58.5050) with a radius of 3.000 arc min
This is 2.259 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 5.34 sq. arc min or 0.19 of the BAT error circle
The XRT error circle is centered at (49.1995,-58.5326) with a radius of 0.028 arc min
This is 0.332 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
image afterglow message for exposure 1 of trigger 863186
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180924d19h30m36s735719usUT
Observation start time is 2018-09-24T15:24:06.8
Examining file ./863186_g103_uvot_catalog_image.fits
The exposure ID is 559495446
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 4 detected source(s) for 863186_g103
Aspect correction adds 0.00049 degrees (0.117 sec of time = 0.92 arc sec) to RA
Aspect correction adds -0.00021 degrees (-0.75 arcsec) to Dec
Total aspect correction is 1.19 arcsec
Star catalogs centered at 49.2190 , -58.5326 with radius 2.55 arc min.
n_usno: 43 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 5 matched entries is 0.450" for 863186_g103
Mean and std. dev of mag. difference (MAG_DELTA) are 1.543 and 0.467 for 863186_g103
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 863186_g103.
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.
Magnitude criteria will be applied later.
BAT distances are from RA=49.1610 (03:16:38.64) DEC=-58.5050 (-58:30:18.0)
XRT distances are from RA=49.1995 (03:16:47.87) DEC=-58.5326 (-58:31:57.3)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 52114.539 counts in the bkg source region of 6197.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 8.410 counts/pixel (5-sig UL in 4" is 20.19 mag) for 863186_g103
There are 1761.0658 counts in the xrt source region of 199.00000 pixels.
Rate in xrt region with 8 arcsec radius is 8.850 counts/pixel for 863186_g103
There are 10346.553 counts in the xrt_bkg source region of 1230.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 8.412 counts/pixel (5-sig UL in 4" is 20.19 mag) for 863186_g103
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 20.75, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 863186_559495446_180924d19h30m36s735719usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(49.2101,-58.5326,45")
fk5;-circle(49.1970594023716,-58.5353567248519,6")
Region file: 863186_559495446_180924d19h30m36s735719usUT_xrt.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(49.19946,-58.53258,8")
Region file: 863186_559495446_180924d19h30m36s735719usUT_xrt_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(49.19946,-58.53258,25")
fk5;-circle(49.19946,-58.53258,15")
fk5;-circle(49.1970594023716,-58.5353567248519,6")
image paragraph message for exposure 1 of trigger 863186
------ Start for Possible Stand-alone Circular ----
In response to GRB180924 (Swift/BAT trigger 863186) at 15:22:22 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 82 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
0.03.
------- notes for trigger 863186 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180924d19h30m39s361434usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=863186
-expid=559495446 -meonly -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/863186/
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 559495446.81442 or about 2018:267:15:24:01 UT
Found 215 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 51 sources in
srclist catalog. Found 29 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 4 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 20.75 mag. Found 39 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 52114.5 counts in the large background region of 6197.0 pixels or a rate
of 8.410 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 20.19 mag. for a
4-arcsec aperture.
Found 1761.1 counts in the XRT position region of 199.0 pixels or a rate of
8.850 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.581 +/- 0.301 (1-sigma) cps or
20.37 mag and a range from 19.92 to 21.16 mag. The 3-sigma UL at the XRT
position is 1.482 cps or 19.35 mag. The closest srclist source has ra= 49.1968
dec= -58.5355 mag=19.00 sep=11.69". The closest Genie source has ra= 49.1971
dec= -58.5354 mag=18.39 sep=10.97".
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?
559495446 81 WHITE srclist found no candidates.
559495446 81 WHITE image found no candidates.
List afterglow candidates for other finding charts.
559495604 239 U srclist found no candidates.
559495604 239 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -58.53258
GRB_ERROR: 5
GRB_RA: 49.19946
IMAGE_START_TIME: 15:24:01
MAGNITUDE: 19.4
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT