image overlap message for exposure 1 of trigger 804692
uvot_overlap.pl vrs. 2010-12-20b fem started at 180111d20h39m37s119932usUT
The observation of trigger 804692 started 2018-01-11T16:44:04.0
Examining file ./804692_g117_uvot_sky_image.fits
The exposure ID is 537381844
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (149.7880,48.2713) with a roll angle of 60.9
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 (149.8410,48.2650) with a radius of 3.000 arc min
This is 2.150 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 5.60 sq. arc min or 0.20 of the BAT error circle
The XRT error circle is centered at (149.7798,48.2677) with a radius of 0.030 arc min
This is 0.395 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 804692
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180111d20h39m40s107322usUT
Observation start time is 2018-01-11T16:44:04.0
Examining file ./804692_g117_uvot_catalog_image.fits
The exposure ID is 537381844
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 6 detected source(s) for 804692_g117
Aspect correction adds 0.00148 degrees (0.355 sec of time = 3.55 arc sec) to RA
Aspect correction adds 0.00027 degrees ( 0.97 arcsec) to Dec
Total aspect correction is 3.68 arcsec
Star catalogs centered at 149.7770 , 48.2708 with radius 2.15 arc min.
n_usno: 28 n_gsc: 23
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 3 matched entries is 0.594" for 804692_g117
Mean and std. dev of mag. difference (MAG_DELTA) are 0.377 and 0.300 for 804692_g117
Found 3 entries without IDs and 3 entries that are acceptable afterglow candidates for 804692_g117.
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=149.8410 (09:59:21.84) DEC=48.2650 (+48:15:54.0)
XRT distances are from RA=149.7798 (09:59:07.14) DEC=48.2677 (+48:16:03.7)
*** WARNING 50 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 804692_g117 with genie
ra=149.77937 (09:59:07.05) dec=48.26855 (+48:16:06.8) +/- 0.7" mag=17.74+/-0.14
dist=3.2 REFID=6 major=2.6 minor=1.6 flag=1 (neighbor)
Found 5 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
149.7819 48.2712 11.4 -1 USNO-B1 13.13 13.21 13.18
149.7864 48.2708 18.7 -1 USNO-B1 18.20 17.23 17.66
149.7819 48.2712 11.4 -1 GSC2.3 99.99 99.99 13.19
149.7819 48.2716 12.5 -1 GSC2.3 14.63 99.99 99.99
149.7869 48.2706 19.6 -1 GSC2.3 18.61 19.50 18.20
*** unacceptable major profile of 2.6
-----------------
Entry 1 in the list of sources is a candidate afterglow for 804692_g117 with genie
ra=149.77476 (09:59:05.94) dec=48.27118 (+48:16:16.2) +/- 0.8" mag=17.86+/-0.14
dist=17.3 REFID=3 major=5.3 minor=2.2 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 160.3 arc sec from the BAT position.
Found 3 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
149.7819 48.2712 17.1 -1 USNO-B1 13.13 13.21 13.18
149.7819 48.2712 17.1 -1 GSC2.3 99.99 99.99 13.19
149.7819 48.2716 17.1 -1 GSC2.3 14.63 99.99 99.99
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 5.3
-----------------
Entry 4 in the list of sources is a candidate afterglow for 804692_g117 with genie
ra=149.78514 (09:59:08.43) dec=48.26721 (+48:16:01.9) +/- 0.7" mag=17.45+/-0.14
dist=13.0 REFID=1 major=4.6 minor=1.0 flag=1 (neighbor)
*** The position of this source is inconsistent with the XRT position.
The position is 134.1 arc sec from the BAT position.
Found 6 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
149.7819 48.2712 16.5 -1 USNO-B1 13.13 13.21 13.18
149.7864 48.2708 13.2 -1 USNO-B1 18.20 17.23 17.66
149.7819 48.2712 16.5 -1 GSC2.3 99.99 99.99 13.19
149.7819 48.2716 17.7 -1 GSC2.3 14.63 99.99 99.99
149.7869 48.2706 13.1 -1 GSC2.3 18.61 19.50 18.20
149.7884 48.2655 9.8 -1 GSC2.3 20.37 99.99 99.99
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 4.6
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=149.77937 (09:59:07.05) dec=48.26855 (+48:16:06.8) +/- 0.7" mag=17.74+/-0.14 dist=3.2 REFID=6 flag=1
There are 54241.996 counts in the bkg source region of 5661.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 9.582 counts/pixel (5-sig UL in 4" is 20.12 mag) for 804692_g117
There are 2891.3696 counts in the xrt source region of 197.00000 pixels.
Rate in xrt region with 8 arcsec radius is 14.677 counts/pixel for 804692_g117
There are 9930.4199 counts in the xrt_bkg source region of 977.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 10.164 counts/pixel (5-sig UL in 4" is 20.09 mag) for 804692_g117
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 20.68, 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: 804692_537381844_180111d20h39m40s107322usUT_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(149.7880,48.2713,45")
fk5;-circle(149.779370395925,48.2685529332741,6")
fk5;-circle(149.774759271298,48.2711790218083,6")
fk5;-circle(149.781877395696,48.2711042299746,6")
fk5;-circle(149.786006215674,48.2705744260186,6")
fk5;-circle(149.785138182148,48.2672079049925,6")
fk5;-circle(149.779531574347,48.2758115153495,6")
Region file: 804692_537381844_180111d20h39m40s107322usUT_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(149.77975,48.26769,8")
Region file: 804692_537381844_180111d20h39m40s107322usUT_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(149.77975,48.26769,25")
fk5;-circle(149.77975,48.26769,15")
fk5;-circle(149.774759271298,48.2711790218083,6")
fk5;-circle(149.781877395696,48.2711042299746,6")
fk5;-circle(149.786006215674,48.2705744260186,6")
fk5;-circle(149.785138182148,48.2672079049925,6")
fk5;-circle(149.779531574347,48.2758115153495,6")
image paragraph message for exposure 1 of trigger 804692
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 GRB180111 (Swift/BAT trigger 804692) at 16:42:06 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 97 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
0.01.
------- notes for trigger 804692 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180111d20h39m43s706430usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=804692
-expid=537381844 -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/804692/
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 537381844.04536 or about 2018:011:16:43:59 UT
Found 152 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 18 sources in
srclist catalog. Found 3 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 6 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 3 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.68 mag. Found 24 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 3% of the Genie image region.
Genie image analysis:
Found 54242.0 counts in the large background region of 5661.0 pixels or a rate
of 9.582 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 20.12 mag. for a
4-arcsec aperture.
Found 2891.4 counts in the XRT position region of 197.0 pixels or a rate of
14.677 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 5.927 +/- 0.383 (1-sigma) cps or
17.85 mag and a range from 17.78 to 17.92 mag. The 3-sigma UL at the XRT
position is 7.075 cps or 17.66 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 149.7799 dec= 48.2674 mag=19.62 sep=1.05".
The closest srclist source has ra= 149.7799 dec= 48.2674 mag=19.62 sep=1.05".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 149.7794 dec= 48.2685 mag=17.74 sep=3.24". The closest Genie
source has ra= 149.7794 dec= 48.2685 mag=17.74 sep=3.24".
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 150 seconds with the White filter
starting 97 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 09:59:07.05 = 149.77937
DEC(J2000) = +48:16:06.8 = 48.26855
with a 90%-confidence error radius of about 0.75 arc sec. This position is 3.24
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.74 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.01.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 97 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 09:59:07.18 = 149.77991
DEC(J2000) = +48:16:02.7 = 48.26742
with a 90%-confidence error radius of about 1.10 arc sec. This position is 1.05
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.62 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.01.
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?
537381844 97 WHITE 149.77991 48.26742 19.62/19.2 1.0 srclist Yes
537381844 97 WHITE image found no candidates.
List afterglow candidates for other finding charts.
537382056 309 ? srclist data are not available.
537382056 309 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 48.26769
GRB_ERROR: 5
GRB_RA: 149.77975
IMAGE_START_TIME: 16:43:59
MAGNITUDE: 17.7
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT