image overlap message for exposure 1 of trigger 954304
uvot_overlap.pl vrs. 2010-12-20b fem started at 200205d22h02m42s743880usUT
The observation of trigger 954304 started 2020-02-05T06:38:35.3
Examining file ./954304_g163_uvot_sky_image.fits
The exposure ID is 602577515
The exposure time is 249.946 (seconds)
The filter is UVW2.
The uvot region is centered at (130.1711,-35.2779) with a roll angle of 190.0
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 (130.1710,-35.2450) with a radius of 3.000 arc min
This is 1.974 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 6.31 sq. arc min or 0.22 of the BAT error circle
The XRT error circle is centered at (130.1700,-35.2737) with a radius of 0.032 arc min
This is 0.259 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 954304
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200205d22h03m06s899306usUT
Observation start time is 2020-02-05T06:38:35.3
Examining file ./954304_g163_uvot_catalog_image.fits
The exposure ID is 602577515
The exposure is 249.946 sec.
The bin size is 2 pixels
The filter is UVW2
There are 6 detected source(s) for 954304_g163
Aspect correction adds -0.00060 degrees (-0.144 sec of time = -1.76 arc sec) to RA
Aspect correction adds -0.00057 degrees (-2.06 arcsec) to Dec
Total aspect correction is 2.71 arcsec
Star catalogs centered at 130.1732 , -35.2769 with radius 2.13 arc min.
n_usno: 232 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 4 matched entries is 0.725" for 954304_g163
Mean and std. dev of mag. difference (MAG_DELTA) are 3.320 and 0.970 for 954304_g163
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 954304_g163.
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=130.1710 (08:40:41.04) DEC=-35.2450 (-35:14:42.0)
XRT distances are from RA=130.1700 (08:40:40.81) DEC=-35.2737 (-35:16:25.2)
*** WARNING 33 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 954304_g163 with genie
ra=130.17058 (08:40:40.94) dec=-35.27349 (-35:16:24.6) +/- 0.8" mag=16.89+/-0.16
dist=1.7 REFID=6 major=1.2 minor=1.1 flag=0
Found 8 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
130.1744 -35.2736 11.2 -1 USNO-B1 20.00 19.12 19.51
130.1726 -35.2734 5.9 -1 USNO-B1 21.39 19.40 20.28
130.1695 -35.2745 4.7 -1 USNO-B1 18.19 16.50 17.25
130.1771 -35.2746 19.4 -1 USNO-B1 20.93 19.48 20.12
130.1668 -35.2778 19.2 -1 USNO-B1 17.64 16.06 16.76
130.1744 -35.2692 19.1 -1 USNO-B1 20.41 18.25 19.21
130.1646 -35.2729 17.8 -1 USNO-B1 19.25 17.71 18.39
130.1728 -35.2683 19.6 -1 USNO-B1 18.17 16.03 16.98
uvot_check_outside found 12 of 12 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
-----------------
Entry 3 in the list of sources is a candidate afterglow for 954304_g163 with genie
ra=130.15311 (08:40:36.75) dec=-35.26931 (-35:16:09.5) +/- 1.1" mag=19.27+/-0.31
dist=52.2 REFID=5 major=1.1 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 102.1 arc sec from the BAT position.
Found 9 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
130.1593 -35.2713 19.7 -1 USNO-B1 19.75 18.44 19.02
130.1573 -35.2655 18.6 -1 USNO-B1 20.69 19.46 20.01
130.1529 -35.2699 2.2 -1 USNO-B1 16.47 14.37 15.30 *
130.1517 -35.2716 9.3 -1 USNO-B1 20.30 18.27 19.17
130.1504 -35.2722 13.2 -1 USNO-B1 19.03 18.54 18.75
130.1473 -35.2710 18.2 -1 USNO-B1 20.04 18.83 19.37
130.1499 -35.2646 19.2 -1 USNO-B1 21.12 19.27 20.09
130.1488 -35.2659 17.7 -1 USNO-B1 20.11 19.13 19.57
130.1485 -35.2657 18.8 -1 USNO-B1 20.45 18.52 19.38
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
Found 2 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
130.1726 -35.2734 7.6 -1 USNO-B1 21.39 19.40 20.28
130.1695 -35.2745 3.2 -1 USNO-B1 18.19 16.50 17.25
The closest star is 3.23" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=130.17058 (08:40:40.94) dec=-35.27349 (-35:16:24.6) +/- 0.8" mag=16.89+/-0.16 dist=1.7 REFID=6 flag=0
There are 6567.2168 counts in the bkg source region of 6015.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 1.092 counts/pixel for 954304_g163
There are 438.63666 counts in the xrt source region of 201.00000 pixels.
Rate in xrt region with 8 arcsec radius is 2.182 counts/pixel for 954304_g163
There are 1366.4086 counts in the xrt_bkg source region of 1206.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 1.133 counts/pixel for 954304_g163
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 10.0, 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: 954304_602577515_200205d22h03m06s899306usUT_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(130.1711,-35.2779,45")
fk5;-circle(130.170575882054,-35.2734891457631,6")
fk5;-circle(130.170147115094,-35.2664350649331,6")
fk5;-circle(130.17749603848,-35.2676772795192,6")
Region file: 954304_602577515_200205d22h03m06s899306usUT_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(130.17004,-35.27367,8")
Region file: 954304_602577515_200205d22h03m06s899306usUT_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(130.17004,-35.27367,25")
fk5;-circle(130.17004,-35.27367,15")
fk5;-circle(130.170147115094,-35.2664350649331,6")
fk5;-circle(130.17749603848,-35.2676772795192,6")
image paragraph message for exposure 1 of trigger 954304
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: unexpected filter
SRCLIST PROBLEM: unexpected filter
See notes for more details.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
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 GRB200205 (Swift/BAT trigger 954304) at 06:35:51 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the UVW2 filter starting
139 seconds after the BAT trigger. No credible afterglow candidate has been
found in the initial data products. The 2.7'x2.7' sub-image processing FAILED
because of unexpected filter. Processing for the 8'x8' region for the list of
sources generated on-board FAILED because of unexpected filter. No correction
has been made for the large, but uncertain, extinction expected.
------- notes for trigger 954304 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200205d22h03m10s396024usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=954304
-expid=602577515 -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/954304/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for xrt position.
*** Warning -- Processing cannot handle uvw2 filter.
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 602577515.32912 or about 2020:036:06:38:30 UT
Found 3170 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 28% of the srclist region. Found 50 sources in
srclist catalog. Found 14 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
10.00 mag.
Found 6 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
10.00 mag. Found 228 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 34% of the Genie image region.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 130.1708 dec= -35.2739 mag=18.41 sep=2.36".
The closest srclist source has ra= 130.1708 dec= -35.2739 mag=18.41 sep=2.36".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 130.1706 dec= -35.2735 mag=16.89 sep=1.70". The closest Genie
source has ra= 130.1706 dec= -35.2735 mag=16.89 sep=1.70".
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 UVW2 filter starting
139 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 08:40:40.94 = 130.17058
DEC(J2000) = -35:16:24.6 = -35.27349
with a 90%-confidence error radius of about 0.77 arc sec. This position is 1.70
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.89 with a 1-sigma error of about 0.16. No correction has been made for the
large, but uncertain, extinction expected.
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?
602577515 139 UVW2 130.17077 -35.27394 18.41/10.0 2.4 srclist Yes
602577515 139 UVW2 130.17058 -35.27349 16.89/10.0 1.7 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------