srclist overlap message for exposure 1 of trigger 814677
uvot_overlap.pl vrs. 2010-12-20b fem started at 180316d14h30m57s055125usUT
The observation of trigger 814677 started 2018-03-16T04:59:30.2
Examining file ./814677_g124_uvot_sky_srclist.fits
The exposure ID is 542869170
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (265.4322,0.7470) with a roll angle of 91.8
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 (265.4360,0.7370) with a radius of 3.000 arc min
This is 0.640 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 (265.4285,0.7481) with a radius of 0.023 arc min
This is 0.230 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 814677
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180316d14h31m02s832244usUT
Observation start time is 2018-03-16T04:59:30.2
Examining file ./814677_g124_uvot_catalog_srclist.fits
The exposure ID is 542869170
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 814677_g124
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 814677_g124 has mag 19.28
Aspect correction adds -0.00059 degrees (-0.142 sec of time = -2.14 arc sec) to RA
Aspect correction adds -0.00070 degrees (-2.51 arcsec) to Dec
Total aspect correction is 3.30 arcsec
Star catalogs centered at 265.4309 , 0.7489 with radius 6.31 arc min.
n_usno: 1364 n_gsc: 1579
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.9378
RA DEC Mag Color
bright star 0: 265.41321 (17:41:39.17) 0.73294 (+00:43:58.6) 10.94 GSC-F
bright star 1: 265.51166 (17:42:02.80) 0.79442 (+00:47:39.9) 11.77 GSC-F
Mean distance difference (CAT_DELTA) for 185 matched entries is 0.659" for 814677_g124
Mean and std. dev of mag. difference (MAG_DELTA) are 1.074 and 0.661 for 814677_g124
Found 7 entries without IDs and 4 entries that are acceptable afterglow candidates for 814677_g124.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=265.4360 (17:41:44.64) DEC= 0.7370 (+00:44:13.2)
XRT distances are from RA=265.4285 (17:41:42.85) DEC= 0.7481 (+00:44:53.3)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 814677_g124 with 3x3 stamp
ra=265.42863 (17:41:42.87) dec=0.74827 (+00:44:53.8) +/- 1.1" mag=16.61+/-0.35
dist=0.6 REFID=26
src: 0 distr. of nearby unmatched sources: 0 0 0 0 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
265.4284 0.7491 3.2 -1 USNO-B1 21.05 19.97 20.45 *
265.4293 0.7532 18.0 -1 USNO-B1 19.22 17.90 18.49
265.4290 0.7534 18.6 -1 USNO-B1 19.51 18.45 18.92
265.4253 0.7466 13.5 -1 USNO-B1 15.70 14.29 14.91
265.4284 0.7491 3.1 -1 GSC2.3 19.89 20.88 99.99 *
265.4288 0.7534 18.5 -1 GSC2.3 19.06 99.99 99.99
265.4261 0.7460 12.2 -1 GSC2.3 99.99 99.99 99.99
265.4252 0.7466 13.7 -1 GSC2.3 13.97 15.50 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 10 in the list of sources is a candidate afterglow for 814677_g124 with 1x1 stamp
ra=265.43959 (17:41:45.50) dec=0.76279 (+00:45:46.1) +/- 1.1" mag=18.66+/-0.35
dist=66.1 REFID=132
*** The position of this source is inconsistent with the XRT position.
The position is 93.7 arc sec from the BAT position.
src: 10 srclist_match has ID
src: 10 distr. of nearby unmatched sources: 0 1 0 0 0
Found 8 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
265.4393 0.7640 4.4 -1 USNO-B1 15.09 13.61 14.26
265.4423 0.7630 9.7 -1 USNO-B1 20.33 18.12 19.10
265.4405 0.7643 6.5 -1 USNO-B1 18.09 99.99 99.99
265.4395 0.7630 0.8 -1 GSC2.3 99.99 99.99 99.99 *
265.4391 0.7639 4.2 -1 GSC2.3 13.34 14.81 99.99
265.4423 0.7629 9.7 -1 GSC2.3 18.53 20.38 99.99
265.4409 0.7643 7.3 -1 GSC2.3 16.51 99.99 99.99
265.4398 0.7679 18.4 -1 GSC2.3 19.63 21.07 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 35 in the list of sources is a candidate afterglow for 814677_g124 with 1x1 stamp
ra=265.40409 (17:41:36.98) dec=0.76617 (+00:45:58.2) +/- 1.1" mag=19.15+/-0.35
dist=109.3 REFID=136
*** The position of this source is inconsistent with the XRT position.
The position is 155.6 arc sec from the BAT position.
src: 35 srclist_match has ID
src: 35 distr. of nearby unmatched sources: 1 0 0 0 0
Found 11 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
265.4091 0.7668 18.1 -1 USNO-B1 20.43 99.99 99.99
265.4083 0.7676 15.9 -1 USNO-B1 19.29 17.62 18.36
265.4063 0.7667 8.3 -1 USNO-B1 14.66 13.88 14.23
265.4047 0.7665 2.6 -1 USNO-B1 16.93 16.04 16.43 *
265.4016 0.7620 17.5 -1 USNO-B1 19.55 18.23 18.81
265.4004 0.7699 19.0 -1 USNO-B1 18.35 16.94 17.56
265.4084 0.7676 16.4 -1 GSC2.3 18.42 19.63 99.99
265.4064 0.7667 8.6 -1 GSC2.3 13.58 14.52 99.99
265.4044 0.7664 1.3 -1 GSC2.3 16.91 18.10 99.99 *
265.4016 0.7620 17.6 -1 GSC2.3 18.29 19.49 99.99
265.4002 0.7700 19.7 -1 GSC2.3 16.52 18.15 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 43 in the list of sources is a candidate afterglow for 814677_g124 with 1x1 stamp
ra=265.41087 (17:41:38.61) dec=0.72436 (+00:43:27.7) +/- 1.1" mag=19.21+/-0.35
dist=106.7 REFID=156
*** The position of this source is inconsistent with the XRT position.
The position is 101.3 arc sec from the BAT position.
src: 43 srclist_match has ID
src: 43 distr. of nearby unmatched sources: 1 0 0 0 0
Found 4 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
265.4119 0.7278 12.9 -1 USNO-B1 19.98 18.80 19.33
265.4113 0.7247 2.0 -1 USNO-B1 18.77 17.45 18.04 *
265.4120 0.7278 12.9 -1 GSC2.3 18.86 20.02 99.99
265.4113 0.7247 2.0 -1 GSC2.3 17.50 18.95 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 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
265.4284 0.7491 3.6 -1 USNO-B1 21.05 19.97 20.45
265.4284 0.7491 3.5 -1 GSC2.3 19.89 20.88 99.99
The closest star is 3.51" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=265.42863 (17:41:42.87) dec=0.74827 (+00:44:53.8) +/- 1.1" mag=16.61+/-0.35 dist=0.6 REFID=26
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 < 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 814677
SRCLIST PROBLEM: srclist filled telemetry buffer
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 GRB180316 (Swift/BAT trigger 814677) at 04:57:25 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 104 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
0.28.
------- notes for trigger 814677 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180316d14h31m15s703196usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=814677
-expid=542869170 -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/814677/
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 542869170.22664 or about 2018:075:04:59:25 UT
Found 1579 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 27% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 7 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 33 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 6 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.47 mag. Found 284 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 73642.4 counts in the large background region of 5283.0 pixels or a rate
of 13.940 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 19.92 mag. for a
4-arcsec aperture.
Found 6639.2 counts in the XRT position region of 201.0 pixels or a rate of
33.031 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 25.054 +/- 0.565 (1-sigma) cps or
16.28 mag and a range from 16.26 to 16.31 mag. The 3-sigma UL at the XRT
position is 26.749 cps or 16.21 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 19.28 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 265.4286 dec= 0.7483 mag=16.61 sep=0.57".
The closest srclist source has ra= 265.4286 dec= 0.7483 mag=16.61 sep=0.57".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 265.4286 dec= 0.7482 mag=16.25 sep=0.45". The closest Genie
source has ra= 265.4286 dec= 0.7482 mag=16.25 sep=0.45".
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 104 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 17:41:42.87 = 265.42862
DEC(J2000) = +00:44:53.7 = 0.74824
with a 90%-confidence error radius of about 0.61 arc sec. This position is 0.45
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.25 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.28.
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?
542869170 104 WHITE srclist found no candidates.
542869170 104 WHITE image found no candidates.
List afterglow candidates for other finding charts.
542869382 316 U srclist found no candidates.
542869382 316 U image found no candidates.
542869935 869 WHITE srclist found no candidates.
542869935 869 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 0.74814
GRB_ERROR: 5
GRB_RA: 265.42854
IMAGE_START_TIME: 04:59:25
MAGNITUDE: 16.2
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT