image overlap message for exposure 2 of trigger 814259
uvot_overlap.pl vrs. 2010-12-20b fem started at 180314d19h28m32s729319usUT
The observation of trigger 814259 started 2018-03-14T19:17:00.6
Examining file 814259_g328_uvot_sky_image.fits
The exposure ID is 542747820
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (275.0939,7.1867) with a roll angle of 93.6
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 (275.0890,7.1810) with a radius of 3.000 arc min
This is 0.450 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 7.17 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (275.0898,7.1831) with a radius of 0.082 arc min
This is 0.327 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 2 of trigger 814259
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180314d19h28m33s631366usUT
Observation start time is 2018-03-14T19:17:00.6
Examining file 814259_g328_uvot_catalog_image.fits
The exposure ID is 542747820
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 28 detected source(s) for 814259_g328
Aspect correction adds 0.00066 degrees (0.159 sec of time = 2.37 arc sec) to RA
Aspect correction adds 0.00201 degrees ( 7.25 arcsec) to Dec
Total aspect correction is 7.63 arcsec
Star catalogs centered at 275.0916 , 7.1846 with radius 2.52 arc min.
n_usno: 379 n_gsc: 475
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.20508
RA DEC Mag Color
bright star 0: 275.09094 (18:20:21.83) 7.21634 (+07:12:58.8) 11.21 USNO-V
bright star 1: 275.05371 (18:20:12.89) 7.17657 (+07:10:35.6) 11.84 GSC-V
Mean distance difference (CAT_DELTA) for 27 matched entries is 0.514" for 814259_g328
Mean and std. dev of mag. difference (MAG_DELTA) are 1.235 and 1.432 for 814259_g328
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 814259_g328.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=275.0890 (18:20:21.36) DEC= 7.1810 (+07:10:51.6)
XRT distances are from RA=275.0898 (18:20:21.55) DEC= 7.1831 (+07:10:59.2)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 814259_g328 with genie
ra=275.09048 (18:20:21.72) dec=7.18291 (+07:10:58.5) +/- 0.6" mag=15.46+/-0.14
dist=2.5 REFID=12 major=6.6 minor=4.7 flag=3 (neighbor+blended)
Found 21 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
275.0914 7.1854 9.5 -1 USNO-B1 18.30 17.54 17.87
275.0920 7.1827 5.5 -1 USNO-B1 20.32 18.74 19.44
275.0937 7.1833 11.7 -1 USNO-B1 19.88 18.17 18.93
275.0886 7.1818 7.9 -1 USNO-B1 17.31 15.38 16.24
275.0883 7.1872 17.3 -1 USNO-B1 20.06 18.54 19.22
275.0957 7.1828 18.8 -1 USNO-B1 19.54 18.15 18.76
275.0882 7.1876 18.9 -1 USNO-B1 20.09 99.99 99.99
275.0915 7.1796 12.5 -1 USNO-B1 20.29 18.68 19.39
275.0883 7.1805 11.7 -1 USNO-B1 19.66 18.12 18.80
275.0904 7.1783 16.7 -1 USNO-B1 20.31 18.47 19.29
275.0915 7.1853 9.2 -1 GSC2.3 18.05 18.87 17.17
275.0920 7.1826 5.7 -1 GSC2.3 18.58 20.31 99.99
275.0898 7.1862 12.2 -1 GSC2.3 20.17 99.99 99.99
275.0938 7.1832 12.0 -1 GSC2.3 18.15 19.43 18.79
275.0886 7.1818 7.9 -1 GSC2.3 14.99 16.84 15.25
275.0873 7.1833 11.3 -1 GSC2.3 20.22 21.37 99.99
275.0959 7.1828 19.2 -1 GSC2.3 18.04 19.09 18.46
275.0916 7.1796 12.7 -1 GSC2.3 18.70 20.20 99.99
275.0883 7.1802 12.5 -1 GSC2.3 99.99 20.05 99.99
275.0904 7.1782 16.9 -1 GSC2.3 18.64 20.08 18.98
275.0906 7.1779 18.2 -1 GSC2.3 20.30 99.99 99.99
*** unacceptable major profile of 6.6
-----------------
Entry 20 in the list of sources is a candidate afterglow for 814259_g328 with genie
ra=275.10921 (18:20:26.21) dec=7.17058 (+07:10:14.1) +/- 0.7" mag=18.46+/-0.17
dist=82.7 REFID=26 major=0.8 minor=0.4 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 81.3 arc sec from the BAT position.
This source is near the edge of image (0.954)
Found 13 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
275.1084 7.1757 18.6 -1 USNO-B1 18.72 17.70 18.15
275.1101 7.1700 3.8 -1 USNO-B1 14.43 12.48 13.35 *
275.1128 7.1736 17.0 -1 USNO-B1 19.30 17.59 18.35
275.1127 7.1732 15.6 -1 USNO-B1 19.80 17.25 18.38
275.1086 7.1676 10.8 -1 USNO-B1 20.19 18.25 19.11
275.1142 7.1723 19.0 -1 USNO-B1 19.95 18.62 19.21
275.1105 7.1663 16.3 -1 USNO-B1 20.12 18.16 19.03
275.1101 7.1699 3.9 -1 GSC2.3 12.09 13.66 12.30 *
275.1128 7.1733 16.1 -1 GSC2.3 16.88 18.39 17.85
275.1086 7.1675 11.4 -1 GSC2.3 18.70 20.27 19.07
275.1143 7.1722 19.2 -1 GSC2.3 18.67 19.77 99.99
275.1107 7.1661 16.8 -1 GSC2.3 18.40 20.69 99.99
275.1138 7.1676 19.5 -1 GSC2.3 20.10 21.44 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 6 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
275.0920 7.1827 8.0 -1 USNO-B1 20.32 18.74 19.44
275.0886 7.1818 6.4 -1 USNO-B1 17.31 15.38 16.24
275.0915 7.1853 9.8 -1 GSC2.3 18.05 18.87 17.17
275.0920 7.1826 8.2 -1 GSC2.3 18.58 20.31 99.99
275.0886 7.1818 6.5 -1 GSC2.3 14.99 16.84 15.25
275.0873 7.1833 8.8 -1 GSC2.3 20.22 21.37 99.99
The closest star is 6.40" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=275.09048 (18:20:21.72) dec=7.18291 (+07:10:58.5) +/- 0.6" mag=15.46+/-0.14 dist=2.5 REFID=12 flag=3
There are 28182.592 counts in the bkg source region of 5373.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 5.245 counts/pixel (5-sig UL in 4" is 19.57 mag) for 814259_g328
There are 2884.8220 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 14.570 counts/pixel for 814259_g328
There are 7347.5986 counts in the xrt_bkg source region of 1123.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 6.543 counts/pixel (5-sig UL in 4" is 19.45 mag) for 814259_g328
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 20.12, 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: 814259_542747820_180314d19h28m33s631366usUT_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(275.0939,7.1867,45")
fk5;-circle(275.0904816276,7.18291045233111,6")
fk5;-circle(275.09141647083,7.18537416427538,6")
fk5;-circle(275.083601817967,7.18417131853626,6")
fk5;-circle(275.091338319412,7.19027452812963,6")
fk5;-circle(275.097690702801,7.18803043398271,6")
fk5;-circle(275.098970963591,7.18055561953796,6")
fk5;-circle(275.100087283482,7.18469776137426,6")
fk5;-circle(275.102678783085,7.17797415742675,6")
fk5;-circle(275.100417663201,7.19582515532243,6")
Region file: 814259_542747820_180314d19h28m33s631366usUT_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(275.0898,+7.1831,8")
Region file: 814259_542747820_180314d19h28m33s631366usUT_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(275.0898,+7.1831,25")
fk5;-circle(275.0898,+7.1831,15")
fk5;-circle(275.09141647083,7.18537416427538,6")
fk5;-circle(275.083601817967,7.18417131853626,6")
fk5;-circle(275.091338319412,7.19027452812963,6")
image paragraph message for exposure 2 of trigger 814259
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: high density of stars
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
1 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB180314 (Swift/BAT trigger 814259) at 19:11:31 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
308 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. Because of the density of catalogued stars, further analysis
is required to report an upper limit for any afterglow in the sub-image. The
8'x8' region for the list of sources generated on-board covers 100% of the XRT
error circle. Because of the density of catalogued stars, further analysis is
required to report an upper limit for any afterglow in the region. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.23.
------- notes for trigger 814259 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180314d19h28m34s942405usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=814259
-expid=542747820 -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/814259/
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 542747820.63866 or about 2018:073:19:16:55 UT
Found 2667 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 49% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 22 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 28 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 2 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.12 mag. Found 467 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 51% of the Genie image region.
Genie image analysis:
Found 28182.6 counts in the large background region of 5373.0 pixels or a rate
of 5.245 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 19.61 mag. for a
4-arcsec aperture.
Found 2884.8 counts in the XRT position region of 198.0 pixels or a rate of
14.570 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 6.357 +/- 0.223 (1-sigma) cps or
16.37 mag and a range from 16.33 to 16.41 mag. The 3-sigma UL at the XRT
position is 7.027 cps or 16.26 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.60 mag.
Found 3 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 275.0887 dec= 7.1818 mag=18.47 sep=6.19".
The closest srclist source has ra= 275.0887 dec= 7.1818 mag=18.47 sep=6.19".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 275.0905 dec= 7.1829 mag=15.46 sep=2.53". The closest Genie
source has ra= 275.0905 dec= 7.1829 mag=15.46 sep=2.53".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 250 seconds with the U filter starting
308 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 18:20:21.72 = 275.09048
DEC(J2000) = +07:10:58.5 = 7.18291
with a 90%-confidence error radius of about 0.61 arc sec. This position is 2.53
arc sec. from the center of the XRT error circle. The estimated magnitude is
15.46 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.23.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 250 seconds with the U filter starting
308 seconds after the BAT trigger. There is a candidate afterglow in the list
of sources generated on-board at
RA(J2000) = 18:20:21.28 = 275.08867
DEC(J2000) = +07:10:54.5 = 7.18180
with a 90%-confidence error radius of about 1.10 arc sec. This position is 6.19
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.47 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.23.
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?
542747820 308 U srclist found no candidates.
542747820 308 U image found no candidates.
List afterglow candidates for other finding charts.
542747662 150 ? srclist data are not available.
542747662 150 WHITE image found no candidates.
------- Tokens for Quick GCN -------