srclist overlap message for exposure 1 of trigger 810300
uvot_overlap.pl vrs. 2010-12-20b fem started at 180216d07h21m04s124980usUT
The observation of trigger 810300 started 2018-02-16T06:56:14.4
Examining file ./810300_g4730_uvot_sky_srclist.fits
The exposure ID is 540456974
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (254.5537,-42.7079) with a roll angle of 89.3
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (254.5450,-42.7090) with a radius of 3.000 arc min
This is 0.391 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 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (254.5524,-42.6988) with a radius of 0.063 arc min
This is 0.546 arc min from the center of the uvot region
The area of the XRT error circle is 0.013 sq. arc min
The UVOT/XRT overlap is 0.013 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 810300
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180216d07h21m05s567106usUT
Observation start time is 2018-02-16T06:56:14.4
Examining file ./810300_g4730_uvot_catalog_srclist.fits
The exposure ID is 540456974
The exposure is 43.200 sec.
The bin size is 2 pixels
The filter is WHITE
There are 115 detected source(s) for 810300_g4730
Aspect correction adds -0.00088 degrees (-0.210 sec of time = -2.32 arc sec) to RA
Aspect correction adds 0.00026 degrees ( 0.94 arcsec) to Dec
Total aspect correction is 2.50 arcsec
Star catalogs centered at 254.5506 , -42.7111 with radius 5.72 arc min.
n_usno: 1195 n_gsc: 3486
*** WARNING -- bright star catalog has 5 entries brighter than 12 mag
The brightest has mag 9.51
RA DEC Mag Color
bright star 0: 254.52971 (16:58:07.13) -42.74789 (-42:44:52.4) 11.77 USNO-V
bright star 1: 254.60022 (16:58:24.05) -42.72814 (-42:43:41.3) 10.34 USNO-V
bright star 2: 254.60379 (16:58:24.91) -42.72785 (-42:43:40.3) 9.51 USNO-R
bright star 3: 254.45821 (16:57:49.97) -42.67001 (-42:40:12.0) 11.75 USNO-V
bright star 4: 254.63906 (16:58:33.37) -42.77916 (-42:46:45.0) 10.70 USNO-V
Mean distance difference (CAT_DELTA) for 101 matched entries is 0.893" for 810300_g4730
Mean and std. dev of mag. difference (MAG_DELTA) are 3.376 and 0.844 for 810300_g4730
Found 21 entries without IDs and 2 entries that are acceptable afterglow candidates for 810300_g4730.
Acceptable entries have no ID, XRT distances < 9.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
19 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=254.5450 (16:58:10.80) DEC=-42.7090 (-42:42:32.4)
XRT distances are from RA=254.5524 (16:58:12.58) DEC=-42.6988 (-42:41:55.7)
-----------------
Entry 22 in the list of sources is a candidate afterglow for 810300_g4730 with 3x3 stamp
ra=254.50632 (16:58:01.52) dec=-42.71524 (-42:42:54.9) +/- 1.1" mag=20.14+/-0.35
dist=135.5 REFID=90
*** The position of this source is inconsistent with the XRT position.
The position is 104.8 arc sec from the BAT position.
src: 22 srclist_match has ID
src: 22 distr. of nearby unmatched sources: 0 0 0 0 0
Found 17 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
254.5131 -42.7163 18.3 -1 USNO-B1 18.79 16.15 17.32
254.5119 -42.7142 15.2 -1 USNO-B1 16.94 14.59 15.63
254.5097 -42.7126 13.0 -1 USNO-B1 16.55 20.46 18.72
254.5064 -42.7148 1.5 -1 USNO-B1 17.54 15.31 16.30 *
254.5053 -42.7107 16.4 -1 USNO-B1 18.81 16.27 17.40
254.5064 -42.7203 18.3 -1 USNO-B1 19.36 16.57 17.81
254.5044 -42.7112 15.5 -1 USNO-B1 99.99 18.54 99.99
254.5029 -42.7194 17.5 -1 USNO-B1 18.63 16.44 17.41
254.5001 -42.7180 19.4 -1 USNO-B1 21.40 18.91 20.02
254.5128 -42.7167 18.0 -1 GSC2.3 17.08 19.21 99.99
254.5119 -42.7142 15.1 -1 GSC2.3 15.10 17.04 15.79
254.5096 -42.7126 12.9 -1 GSC2.3 15.01 16.75 15.36
254.5062 -42.7151 0.7 -1 GSC2.3 15.78 17.81 16.39 *
254.5052 -42.7107 16.6 -1 GSC2.3 17.21 19.14 99.99
254.5062 -42.7203 18.4 -1 GSC2.3 17.22 19.34 99.99
254.5028 -42.7194 17.8 -1 GSC2.3 17.05 18.91 17.76
254.5000 -42.7182 19.9 -1 GSC2.3 99.99 21.45 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 75 in the list of sources is a candidate afterglow for 810300_g4730 with 3x3 stamp
ra=254.51379 (16:58:03.31) dec=-42.75138 (-42:45:05.0) +/- 1.1" mag=20.75+/-0.35
dist=215.0 REFID=114
*** The position of this source is inconsistent with the XRT position.
The position is 173.5 arc sec from the BAT position.
src: 75 distr. of nearby unmatched sources: 0 0 0 0 0
Found 17 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
254.5169 -42.7483 13.9 -1 USNO-B1 99.99 18.35 99.99
254.5104 -42.7483 14.3 -1 USNO-B1 20.37 19.26 19.75
254.5102 -42.7488 13.4 -1 USNO-B1 99.99 17.69 99.99
254.5148 -42.7513 2.8 -1 USNO-B1 99.99 18.16 99.99 *
254.5158 -42.7528 7.4 -1 USNO-B1 21.18 17.65 19.22
254.5112 -42.7515 6.8 -1 USNO-B1 19.82 17.38 18.47
254.5108 -42.7521 8.2 -1 USNO-B1 19.70 16.85 18.12
254.5111 -42.7527 8.5 -1 USNO-B1 19.31 18.91 19.08
254.5107 -42.7526 9.3 -1 USNO-B1 20.78 17.45 18.93
254.5111 -42.7531 9.4 -1 USNO-B1 20.07 17.88 18.85
254.5089 -42.7535 15.0 -1 USNO-B1 19.82 19.25 19.50
254.5168 -42.7482 13.8 -1 GSC2.3 20.33 99.99 99.99
254.5100 -42.7488 13.7 -1 GSC2.3 17.83 20.72 99.99
254.5146 -42.7513 2.1 -1 GSC2.3 18.89 99.99 99.99 *
254.5157 -42.7531 8.0 -1 GSC2.3 18.24 21.62 99.99
254.5112 -42.7514 6.8 -1 GSC2.3 99.99 20.52 99.99
254.5111 -42.7519 7.3 -1 GSC2.3 17.14 20.00 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
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 18.54, XRT distances < 9.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 810300
------ Start for Possible Stand-alone Circular ----
In response to GRB180216 (Swift/BAT trigger 810300) at 05:37:23 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 43 seconds with the White filter
starting 4710 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 extinction.
------- notes for trigger 810300 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180216d07h21m09s813560usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=810300
-expid=540456974 -meonly -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/810300/
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 540456974.41948 or about 2018:047:06:56:09 UT
Found 1191 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 25% of the srclist region. Found 115 sources in
srclist catalog. Found 21 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.54 mag.
Found 23 source(s) in Genie image catalog. 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 19.64 mag. Found 300 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
27% of the Genie image region.
Genie image analysis:
Found 31404.3 counts in the large background region of 5797.0 pixels or a rate
of 5.417 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 19.08 mag. for a
4-arcsec aperture.
Found 1079.6 counts in the XRT position region of 196.0 pixels or a rate of
5.508 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.036 +/- 0.836 (1-sigma) cps or
23.38 mag and a range from 19.93 to 99.99 mag. The 3-sigma UL at the XRT
position is 2.544 cps or 18.77 mag. The closest srclist source has ra= 254.5492
dec= -42.7026 mag=17.07 sep=16.19". The closest Genie source has ra= 254.5491
dec= -42.7026 mag=14.89 sep=16.19".
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?
540456974 4710 WHITE srclist found no candidates.
540456974 4710 WHITE image found no candidates.
List afterglow candidates for other finding charts.
540458197 5933 WHITE 254.57115 -42.71545 18.88/18.7 73.0 srclist Yes
540458197 5933 ? image data are not available.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -42.69881
GRB_ERROR: 9.5
GRB_RA: 254.55242
IMAGE_START_TIME: 06:56:09
MAGNITUDE: 18.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT