srclist overlap message for exposure 1 of trigger 815603
uvot_overlap.pl vrs. 2010-12-20b fem started at 180319d01h29m22s956912usUT
The observation of trigger 815603 started 2018-03-19T01:14:00.2
Examining file 815603_g108_uvot_sky_srclist.fits
The exposure ID is 543114840
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (275.0964,7.1866) with a roll angle of 91.5
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 (275.0940,7.1690) with a radius of 3.000 arc min
This is 1.066 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 (275.0915,7.1839) with a radius of 0.090 arc min
This is 0.332 arc min from the center of the uvot region
The area of the XRT error circle is 0.025 sq. arc min
The UVOT/XRT overlap is 0.025 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 815603
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180319d01h29m23s886558usUT
Observation start time is 2018-03-19T01:14:00.2
Examining file 815603_g108_uvot_catalog_srclist.fits
The exposure ID is 543114840
The exposure is 149.850 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 815603_g108
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 0.999
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 815603_g108 has mag 18.79
Aspect correction adds -0.00043 degrees (-0.104 sec of time = -1.54 arc sec) to RA
Aspect correction adds -0.00072 degrees (-2.60 arcsec) to Dec
Total aspect correction is 3.03 arcsec
Star catalogs centered at 275.0985 , 7.1844 with radius 6.25 arc min.
n_usno: 2328 n_gsc: 2852
*** WARNING -- bright star catalog has 7 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: 275.13370 (18:20:32.09) 7.23838 (+07:14:18.2) 11.40 USNO-V
bright star 2: 275.05371 (18:20:12.89) 7.17657 (+07:10:35.6) 11.84 GSC-V
bright star 3: 275.13004 (18:20:31.21) 7.11351 (+07:06:48.6) 11.58 GSC-V
bright star 4: 275.02695 (18:20:06.47) 7.15007 (+07:09:00.3) 11.63 GSC-V
bright star 5: 275.05420 (18:20:13.01) 7.26443 (+07:15:52.0) 11.69 GSC-V
bright star 6: 275.03177 (18:20:07.62) 7.25504 (+07:15:18.1) 11.79 GSC-V
Mean distance difference (CAT_DELTA) for 189 matched entries is 0.745" for 815603_g108
Mean and std. dev of mag. difference (MAG_DELTA) are 1.477 and 0.706 for 815603_g108
Found 8 entries without IDs and 3 entries that are acceptable afterglow candidates for 815603_g108.
Acceptable entries have no ID, XRT distances < 13.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=275.0940 (18:20:22.56) DEC= 7.1690 (+07:10:08.4)
XRT distances are from RA=275.0915 (18:20:21.96) DEC= 7.1839 (+07:11:02.0)
-----------------
Entry 1 in the list of sources is a candidate afterglow for 815603_g108 with 1x1 stamp
ra=275.09212 (18:20:22.11) dec=7.18530 (+07:11:07.1) +/- 1.1" mag=17.02+/-0.35
dist=5.5 REFID=114
src: 1 distr. of nearby unmatched sources: 0 0 0 0 0
Found 20 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
275.0957 7.1828 15.8 -1 USNO-B1 19.54 18.15 18.76
275.0937 7.1833 9.3 -1 USNO-B1 19.88 18.17 18.93
275.0920 7.1827 9.3 -1 USNO-B1 20.32 18.74 19.44
275.0914 7.1854 2.4 -1 USNO-B1 18.30 17.54 17.87 *
275.0913 7.1903 18.3 -1 USNO-B1 14.98 13.67 14.25
275.0895 7.1889 15.9 -1 USNO-B1 19.91 17.51 18.57
275.0886 7.1818 17.9 -1 USNO-B1 17.31 15.38 16.24
275.0883 7.1872 15.3 -1 USNO-B1 20.06 18.54 19.22
275.0882 7.1876 16.5 -1 USNO-B1 20.09 99.99 99.99
275.0880 7.1883 18.3 -1 USNO-B1 20.08 17.73 18.77
275.0959 7.1828 16.1 -1 GSC2.3 18.04 19.09 18.46
275.0938 7.1832 9.5 -1 GSC2.3 18.15 19.43 18.79
275.0920 7.1826 9.7 -1 GSC2.3 18.58 20.31 99.99
275.0915 7.1853 2.4 -1 GSC2.3 18.05 18.87 17.17 *
275.0898 7.1862 9.1 -1 GSC2.3 20.17 99.99 99.99
275.0913 7.1902 18.0 -1 GSC2.3 13.39 14.40 13.46
275.0895 7.1888 15.6 -1 GSC2.3 18.19 20.31 99.99
275.0886 7.1818 17.9 -1 GSC2.3 14.99 16.84 15.25
275.0873 7.1833 18.6 -1 GSC2.3 20.22 21.37 99.99
275.0880 7.1883 18.3 -1 GSC2.3 17.52 20.01 18.14
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 20 in the list of sources is a candidate afterglow for 815603_g108 with 1x1 stamp
ra=275.10102 (18:20:24.24) dec=7.20477 (+07:12:17.2) +/- 1.1" mag=16.97+/-0.35
dist=82.5 REFID=130
*** The position of this source is inconsistent with the XRT position.
The position is 131.2 arc sec from the BAT position.
src: 20 srclist_match has ID
src: 20 distr. of nearby unmatched sources: 0 0 0 0 0
Found 20 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
275.1031 7.2025 11.0 -1 USNO-B1 17.86 15.79 16.70
275.1034 7.2027 11.4 -1 USNO-B1 17.84 99.99 99.99
275.1013 7.2052 2.0 -1 USNO-B1 15.66 13.14 14.26 *
275.0980 7.2056 11.1 -1 USNO-B1 18.00 16.47 17.15
275.0974 7.2057 13.3 -1 USNO-B1 19.15 99.99 99.99
275.0962 7.2062 18.1 -1 USNO-B1 19.99 18.14 18.96
275.1021 7.2071 9.1 -1 USNO-B1 17.71 99.99 99.99
275.1022 7.2076 10.9 -1 USNO-B1 17.91 99.99 99.99
275.1003 7.1993 20.0 -1 GSC2.3 20.14 21.71 99.99
275.0978 7.2007 18.7 -1 GSC2.3 19.41 22.00 99.99
275.1034 7.2002 18.6 -1 GSC2.3 20.17 21.95 99.99
275.1031 7.2024 11.2 -1 GSC2.3 15.73 16.87 16.10
275.0992 7.2040 7.2 -1 GSC2.3 18.97 22.17 99.99
275.1057 7.2038 17.1 -1 GSC2.3 19.61 21.20 99.99
275.1013 7.2052 1.8 -1 GSC2.3 12.90 15.10 12.66 *
275.0979 7.2054 11.4 -1 GSC2.3 16.85 17.25 16.43
275.0964 7.2062 17.1 -1 GSC2.3 17.90 19.70 99.99
275.0991 7.2070 10.5 -1 GSC2.3 19.45 21.21 99.99
275.1053 7.2063 16.2 -1 GSC2.3 19.72 21.83 99.99
275.1023 7.2080 12.4 -1 GSC2.3 16.22 17.04 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 146 in the list of sources is a candidate afterglow for 815603_g108 with 1x1 stamp
ra=275.10626 (18:20:25.50) dec=7.12133 (+07:07:16.8) +/- 1.1" mag=18.32+/-0.35
dist=231.3 REFID=190
*** The position of this source is inconsistent with the XRT position.
The position is 177.1 arc sec from the BAT position.
src: 146 srclist_match has ID
src: 146 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
275.1075 7.1254 15.5 -1 USNO-B1 20.13 18.90 19.45
275.1088 7.1250 16.0 -1 USNO-B1 99.99 19.34 99.99
275.1084 7.1235 10.9 -1 USNO-B1 18.98 17.27 18.03
275.1069 7.1203 4.4 -1 USNO-B1 16.21 14.27 15.13
275.1067 7.1186 10.0 -1 USNO-B1 19.94 99.99 99.99
275.1029 7.1170 19.8 -1 USNO-B1 18.19 16.02 16.98
275.1040 7.1258 18.0 -1 GSC2.3 99.99 21.98 99.99
275.1021 7.1250 19.8 -1 GSC2.3 99.99 19.42 99.99
275.1083 7.1254 16.2 -1 GSC2.3 18.93 20.74 99.99
275.1089 7.1252 16.8 -1 GSC2.3 99.99 21.63 99.99
275.1084 7.1234 10.8 -1 GSC2.3 16.70 18.71 17.55
275.1036 7.1210 9.6 -1 GSC2.3 20.23 99.99 99.99
275.1066 7.1212 1.3 -1 GSC2.3 15.83 17.28 99.99 *
275.1050 7.1198 7.1 -1 GSC2.3 19.67 99.99 99.99
275.1071 7.1198 6.4 -1 GSC2.3 15.05 16.54 14.03
275.1028 7.1170 19.9 -1 GSC2.3 16.12 17.69 16.28
275.1061 7.1162 18.6 -1 GSC2.3 99.99 22.09 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 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
275.0937 7.1833 8.3 -1 USNO-B1 19.88 18.17 18.93
275.0920 7.1827 4.6 -1 USNO-B1 20.32 18.74 19.44
275.0914 7.1854 5.3 -1 USNO-B1 18.30 17.54 17.87
275.0938 7.1832 8.6 -1 GSC2.3 18.15 19.43 18.79
275.0920 7.1826 5.1 -1 GSC2.3 18.58 20.31 99.99
275.0915 7.1853 4.9 -1 GSC2.3 18.05 18.87 17.17
The closest star is 4.63" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=275.09142 (18:20:21.94) dec=7.18489 (+07:11:05.6) +/- 1.1" mag=14.36+/-0.35 dist=3.6 REFID=5
Unmatched source ra=275.09212 (18:20:22.11) dec=7.18530 (+07:11:07.1) +/- 1.1" mag=17.02+/-0.35 dist=5.5 REFID=114
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 19.22, XRT distances < 13.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: /Home/eud/uvot_tdrss/swift/uvot_gcn/src_815603_XRT.reg
# Region file format: DS9 version 3.0
# find_uvot_ag.pl vrs. 2017-02-17 fem XRT
global font="helvetica 12 bold" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source=1
fk5;circle(275.0915,+7.1839,5.4") # color=red dash=0
point(275.09107,7.18318) # point=diamond 10 color=red width=2
srclist paragraph message for exposure 1 of trigger 815603
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no image afterglow info
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB180319 (Swift/BAT trigger 815603) at 01:12:11 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 88 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. Results from the 2.7'x2.7' sub-image
are not available at this time. 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 815603 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180319d01h29m44s887237usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=815603
-expid=543114840 -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/815603/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 543114840.16616 or about 2018:078:01:13:55 UT
Found 2780 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 8 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 18.79 mag.
Found 2 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 275.0914 dec= 7.1849 mag=14.36 sep=3.58".
The closest srclist source has ra= 275.0914 dec= 7.1849 mag=14.36 sep=3.58".
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 88 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 18:20:21.94 = 275.09142
DEC(J2000) = +07:11:05.6 = 7.18489
with a 90%-confidence error radius of about 1.10 arc sec. This position is 3.58
arc sec. from the center of the XRT error circle. The estimated magnitude is
14.36 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?
543114840 88 WHITE srclist found no candidates.
543114840 88 WHITE image data are not available.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------