image overlap message for exposure 1 of trigger 840853
uvot_overlap.pl vrs. 2010-12-20b fem started at 180613d21h09m06s895435usUT
The observation of trigger 840853 started 2018-06-13T15:39:14.7
Examining file ./840853_g175_uvot_sky_image.fits
The exposure ID is 550597154
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (211.5149,-43.0745) with a roll angle of 261.0
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 (211.5620,-43.0760) with a radius of 3.000 arc min
This is 2.067 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 5.86 sq. arc min or 0.21 of the BAT error circle
The XRT error circle is centered at (211.5206,-43.0724) with a radius of 0.082 arc min
This is 0.280 arc min from the center of the uvot region
The area of the XRT error circle is 0.021 sq. arc min
The UVOT/XRT overlap is 0.021 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 840853
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180613d21h09m20s545503usUT
Observation start time is 2018-06-13T15:39:14.7
Examining file ./840853_g175_uvot_catalog_image.fits
The exposure ID is 550597154
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 24 detected source(s) for 840853_g175
Aspect correction adds -0.00080 degrees (-0.192 sec of time = -2.10 arc sec) to RA
Aspect correction adds -0.00008 degrees (-0.28 arcsec) to Dec
Total aspect correction is 2.12 arcsec
Star catalogs centered at 211.5182 , -43.0782 with radius 2.69 arc min.
n_usno: 317 n_gsc: 423
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 6.22604
RA DEC Mag Color
bright star 0: 211.54544 (14:06:10.91) -43.09170 (-43:05:30.1) 6.23 USNO-V
bright star 1: 211.48569 (14:05:56.57) -43.06884 (-43:04:07.8) 11.44 USNO-V
bright star 2: 211.48540 (14:05:56.50) -43.06788 (-43:04:04.4) 10.39 USNO-R
Mean distance difference (CAT_DELTA) for 23 matched entries is 0.752" for 840853_g175
Mean and std. dev of mag. difference (MAG_DELTA) are 0.897 and 1.316 for 840853_g175
Found 6 entries without IDs and 1 entries that are acceptable afterglow candidates for 840853_g175.
Acceptable entries have no ID, XRT distances < 12.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
5 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=211.5620 (14:06:14.88) DEC=-43.0760 (-43:04:33.6)
XRT distances are from RA=211.5206 (14:06:04.94) DEC=-43.0724 (-43:04:20.5)
-----------------
Entry 28 in the list of sources is a candidate afterglow for 840853_g175 with genie
ra=211.51447 (14:06:03.47) dec=-43.09767 (-43:05:51.6) +/- 0.7" mag=18.67+/-0.17
dist=92.5 REFID=5 major=1.3 minor=0.4 flag=1 (neighbor)
*** The position of this source is inconsistent with the XRT position.
The position is 147.3 arc sec from the BAT position.
This source is near the edge of image (0.989)
Found 13 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
211.5137 -43.0923 19.5 -1 USNO-B1 17.47 99.99 99.99
211.5133 -43.0923 19.7 -1 USNO-B1 17.28 16.98 17.11
211.5143 -43.0985 3.0 -1 USNO-B1 16.77 15.96 16.32 *
211.5184 -43.1004 14.1 -1 USNO-B1 19.41 19.41 19.41
211.5140 -43.1013 13.1 -1 USNO-B1 18.77 18.58 18.66
211.5129 -43.0925 19.1 -1 GSC2.3 20.38 99.99 99.99
211.5096 -43.0951 15.8 -1 GSC2.3 99.99 22.36 99.99
211.5209 -43.0966 17.3 -1 GSC2.3 20.09 99.99 99.99
211.5105 -43.0960 12.0 -1 GSC2.3 19.97 99.99 99.99
211.5142 -43.0985 3.0 -1 GSC2.3 15.66 17.28 99.99 *
211.5182 -43.1004 13.9 -1 GSC2.3 18.74 20.09 99.99
211.5094 -43.1005 16.9 -1 GSC2.3 18.35 20.07 99.99
211.5139 -43.1013 13.3 -1 GSC2.3 18.09 19.68 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
Found 4 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
211.5210 -43.0718 2.4 -1 USNO-B1 20.24 20.54 20.41
211.5221 -43.0741 7.6 -1 GSC2.3 20.50 99.99 99.99
211.5204 -43.0727 1.3 -1 GSC2.3 18.54 19.97 99.99
211.5204 -43.0707 5.9 -1 GSC2.3 99.99 22.04 99.99
The closest star is 1.26" away.
List UVOT sources within 10" of the XRT position:
There are 29105.688 counts in the bkg source region of 5831.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 4.992 counts/pixel (5-sig UL in 4" is 19.59 mag) for 840853_g175
There are 979.69940 counts in the xrt source region of 204.00000 pixels.
Rate in xrt region with 8 arcsec radius is 4.802 counts/pixel for 840853_g175
There are 4875.7827 counts in the xrt_bkg source region of 1023.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 4.766 counts/pixel (5-sig UL in 4" is 19.62 mag) for 840853_g175
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 20.15, XRT distances < 12.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 840853_550597154_180613d21h09m20s545503usUT_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(211.5149,-43.0745,45")
fk5;-circle(211.525953186656,-43.0675903166913,6")
fk5;-circle(211.515362770774,-43.0662754239094,6")
fk5;-circle(211.515664739514,-43.0769647262457,6")
fk5;-circle(211.532128795582,-43.0702341397806,6")
fk5;-circle(211.504333113578,-43.068973002234,6")
fk5;-circle(211.497556125299,-43.0687726134925,6")
Region file: 840853_550597154_180613d21h09m20s545503usUT_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(211.52058,-43.07236,8")
Region file: 840853_550597154_180613d21h09m20s545503usUT_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(211.52058,-43.07236,25")
fk5;-circle(211.52058,-43.07236,15")
fk5;-circle(211.525953186656,-43.0675903166913,6")
fk5;-circle(211.515362770774,-43.0662754239094,6")
fk5;-circle(211.515664739514,-43.0769647262457,6")
image paragraph message for exposure 1 of trigger 840853
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB180613 (Swift/BAT trigger 840853) at 15:36:18 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
154 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
0.09.
------- notes for trigger 840853 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180613d21h09m28s384795usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=840853
-expid=550597154 -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/840853/
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 550597154.6612 or about 2018:164:15:39:09 UT
Found 2797 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 27% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 78 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 24 source(s) in Genie image catalog. Found 6 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.15 mag. Found 415 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
39% of the Genie image region.
Genie image analysis:
Found 29105.7 counts in the large background region of 5831.0 pixels or a rate
of 4.992 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 19.63 mag. for a
4-arcsec aperture.
Found 979.7 counts in the XRT position region of 204.0 pixels or a rate of
4.802 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.030 +/- 0.137 (1-sigma) cps or
22.20 mag and a range from 20.33 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.441 cps or 19.27 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.31 mag. The closest
srclist source has ra= 211.5262 dec= -43.0675 mag=17.65 sep=22.92". The closest
Genie source has ra= 211.5157 dec= -43.0770 mag=19.41 sep=21.02".
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?
550597154 154 U srclist found no candidates.
550597154 154 U image found no candidates.
List afterglow candidates for other finding charts.
550597854 854 U srclist found no candidates.
550597854 854 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -43.07236
GRB_ERROR: 12.25
GRB_RA: 211.52058
IMAGE_START_TIME: 15:39:09
MAGNITUDE: 19.3
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT