image overlap message for exposure 1 of trigger 805318
uvot_overlap.pl vrs. 2010-12-20b fem started at 180115d10h48m01s927494usUT
The observation of trigger 805318 started 2018-01-15T04:18:44.5
Examining file ./805318_g160_uvot_sky_image.fits
The exposure ID is 537682724
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (12.0361,-15.6320) with a roll angle of 252.6
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 (12.0730,-15.6080) with a radius of 3.000 arc min
This is 2.574 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 4.43 sq. arc min or 0.16 of the BAT error circle
The XRT error circle is centered at (12.0388,-15.6306) with a radius of 0.028 arc min
This is 0.175 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 805318
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180115d10h48m04s596535usUT
Observation start time is 2018-01-15T04:18:44.5
Examining file ./805318_g160_uvot_catalog_image.fits
The exposure ID is 537682724
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 2 detected source(s) for 805318_g160
Aspect correction adds -0.00038 degrees (-0.092 sec of time = -1.33 arc sec) to RA
Aspect correction adds -0.00052 degrees (-1.87 arcsec) to Dec
Total aspect correction is 2.29 arcsec
Star catalogs centered at 12.0432 , -15.6349 with radius 2.00 arc min.
n_usno: 18 n_gsc: 20
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 1 matched entries is 1.427" for 805318_g160
Mean and std. dev of mag. difference (MAG_DELTA) are 0.645 and 0.000 for 805318_g160
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 805318_g160.
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=12.0730 (00:48:17.52) DEC=-15.6080 (-15:36:28.8)
XRT distances are from RA=12.0388 (00:48:09.30) DEC=-15.6306 (-15:37:50.3)
*** WARNING 50 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 805318_g160 with genie
ra=12.03856 (00:48:09.26) dec=-15.63051 (-15:37:49.8) +/- 0.7" mag=17.54+/-0.14
dist=0.8 REFID=2 major=1.0 minor=1.0 flag=0
Found 0 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)
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
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=12.03856 (00:48:09.26) dec=-15.63051 (-15:37:49.8) +/- 0.7" mag=17.54+/-0.14 dist=0.8 REFID=2 flag=0
There are 82620.086 counts in the bkg source region of 6197.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 13.332 counts/pixel (5-sig UL in 4" is 19.94 mag) for 805318_g160
There are 1965.8933 counts in the src source region of 52.000000 pixels.
Rate in src region with 4 arcsec radius is 37.806 counts/pixel for 805318_g160
There are 16769.557 counts in the cand_src_bkg source region of 1249.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 13.426 counts/pixel (5-sig UL in 4" is 19.94 mag) for 805318_g160
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 20.50, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 805318_537682724_180115d10h48m04s596535usUT_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(12.0361,-15.6320,45")
fk5;-circle(12.0385647252804,-15.6305061961987,6")
Region file: 805318_537682724_180115d10h48m04s596535usUT_cand_src.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(12.0385647252804,-15.6305061961987,4")
Region file: 805318_537682724_180115d10h48m04s596535usUT_cand_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(12.0385647252804,-15.6305061961987,25")
fk5;-circle(12.0385647252804,-15.6305061961987,15")
image paragraph message for exposure 1 of trigger 805318
------ Start for Possible Stand-alone Circular ----
In response to GRB180115 (Swift/BAT trigger 805318) at 04:16:03 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 140 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 00:48:09.25 = 12.03856
DEC(J2000) = -15:37:49.8 = -15.63051
with a 90%-confidence error radius of about 0.75 arc sec. This position is 0.8
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.54 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.02.
------- notes for trigger 805318 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180115d10h48m08s185802usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=805318
-expid=537682724 -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/805318/
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 537682724.5056 or about 2018:015:04:18:39 UT
Found 187 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 21 sources in
srclist catalog. Found 3 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 2 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 1 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.50 mag. Found 20 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 3% of the Genie image region.
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?
537682724 140 WHITE 12.03853 -15.63064 18.06/19.2 0.8 srclist Yes
537682724 140 WHITE 12.03856 -15.63051 17.54/20.5 0.8 image Yes
List afterglow candidates for other finding charts.
537682882 298 U 12.03864 -15.63063 16.65/18.1 0.7 srclist Yes
537682882 298 U 12.03863 -15.63062 16.26/20.4 0.7 image Yes
537683463 879 WHITE 12.03865 -15.63049 17.74/19.2 0.9 srclist Yes
537683463 879 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -15.63051
GRB_ERROR: 0.75
GRB_RA: 12.03856
IMAGE_START_TIME: 04:18:39
MAGNITUDE: 17.54
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT