srclist overlap message for exposure 2 of trigger 844192
uvot_overlap.pl vrs. 2010-12-20b fem started at 180624d21h25m14s711899usUT
The observation of trigger 844192 started 2018-06-24T13:54:37.6
Examining file ./844192_g296_uvot_sky_srclist.fits
The exposure ID is 551541277
The exposure time is undefined.
The filter is U.
The uvot region is centered at (318.0988,-2.3353) with a roll angle of 60.2
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 (318.0710,-2.3320) with a radius of 3.000 arc min
This is 1.676 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 26.68 sq. arc min or 0.94 of the BAT error circle
The XRT error circle is centered at (318.0975,-2.3382) with a radius of 0.025 arc min
This is 0.193 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 2 of trigger 844192
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180624d21h25m51s131418usUT
Observation start time is 2018-06-24T13:54:37.6
Examining file ./844192_g296_uvot_catalog_srclist.fits
The exposure ID is 551541277
The exposure is 249.946 sec.
The bin size is 2 pixels
The filter is U
There are 47 detected source(s) for 844192_g296
Aspect correction adds 0.00134 degrees (0.321 sec of time = 4.81 arc sec) to RA
Aspect correction adds 0.00125 degrees ( 4.50 arcsec) to Dec
Total aspect correction is 6.59 arcsec
Star catalogs centered at 318.0997 , -2.3389 with radius 6.00 arc min.
n_usno: 605 n_gsc: 478
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 10.90494
RA DEC Mag Color
bright star 0: 318.08086 (21:12:19.41) -2.30848 (-02:18:30.5) 11.65 USNO-V
bright star 1: 318.16438 (21:12:39.45) -2.31492 (-02:18:53.7) 10.90 USNO-V
bright star 2: 318.11349 (21:12:27.24) -2.34517 (-02:20:42.6) 11.83 GSC-F
Mean distance difference (CAT_DELTA) for 33 matched entries is 0.610" for 844192_g296
Mean and std. dev of mag. difference (MAG_DELTA) are 1.977 and 0.609 for 844192_g296
Found 15 entries without IDs and 3 entries that are acceptable afterglow candidates for 844192_g296.
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.
6 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=318.0710 (21:12:17.04) DEC=-2.3320 (-02:19:55.2)
XRT distances are from RA=318.0975 (21:12:23.40) DEC=-2.3382 (-02:20:17.7)
*** WARNING 31 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 844192_g296 with 5x5 stamp
ra=318.10471 (21:12:25.13) dec=-2.34962 (-02:20:58.6) +/- 1.1" mag=18.84+/-0.35
dist=48.4 REFID=39
*** The position of this source is inconsistent with the XRT position.
The position is 136.8 arc sec from the BAT position.
src: 0 srclist_match has ID
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 10 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
318.1012 -2.3512 13.7 -1 USNO-B1 99.99 19.55 99.99
318.1056 -2.3499 3.4 -1 USNO-B1 15.28 14.11 14.63 *
318.1023 -2.3512 10.4 -1 USNO-B1 18.17 16.54 17.26
318.1019 -2.3513 11.8 -1 USNO-B1 99.99 16.87 99.99
318.1011 -2.3515 14.4 -1 USNO-B1 20.50 19.66 20.04
318.1015 -2.3520 14.5 -1 USNO-B1 18.26 18.87 18.60
318.1050 -2.3493 1.4 -1 GSC2.3 99.99 99.99 99.99 *
318.1055 -2.3500 3.1 -1 GSC2.3 14.44 15.45 99.99 *
318.1009 -2.3514 15.2 -1 GSC2.3 20.11 99.99 99.99
318.1022 -2.3513 10.9 -1 GSC2.3 16.62 18.14 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 25 in the list of sources is a candidate afterglow for 844192_g296 with 5x5 stamp
ra=318.04211 (21:12:10.11) dec=-2.33248 (-02:19:56.9) +/- 1.1" mag=18.81+/-0.35
dist=200.3 REFID=36
*** The position of this source is inconsistent with the XRT position.
The position is 103.9 arc sec from the BAT position.
src: 25 distr. of nearby unmatched sources: 0 0 1 0 0
Found 3 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
318.0432 -2.3320 4.3 -1 USNO-B1 14.34 13.10 13.65
318.0430 -2.3337 5.6 -1 USNO-B1 14.10 16.76 15.58
318.0432 -2.3321 3.9 -1 GSC2.3 13.52 14.30 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 33 in the list of sources is a candidate afterglow for 844192_g296 with 3x3 stamp
ra=318.03560 (21:12:08.54) dec=-2.34359 (-02:20:36.9) +/- 1.1" mag=19.06+/-0.35
dist=223.5 REFID=46
*** The position of this source is inconsistent with the XRT position.
The position is 134.0 arc sec from the BAT position.
src: 33 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
318.0359 -2.3399 13.3 -1 USNO-B1 14.02 12.94 13.42 *
318.0358 -2.3400 13.0 -1 GSC2.3 13.20 13.88 99.99
318.0334 -2.3437 8.1 -1 GSC2.3 99.99 21.91 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 1 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
318.0970 -2.3379 2.1 -1 GSC2.3 20.85 99.99 99.99
The closest star is 2.09" away.
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 18.12, 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 2 of trigger 844192
------ Start for Possible Stand-alone Circular ----
In response to GRB180624 (Swift/BAT trigger 844192) at 13:49:40 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
276 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 19.2 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 18.0 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.05.
------- notes for trigger 844192 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180624d21h25m56s981134usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=844192
-expid=551541277 -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/844192/
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 551541277.63504 or about 2018:175:13:54:32 UT
Found 601 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 11% of the srclist region. Found 47 sources in
srclist catalog. Found 15 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
Found 9 source(s) in Genie image catalog. Found 0 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 19.98 mag. Found 90 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 12% of the
Genie image region.
Genie image analysis:
Found 41099.5 counts in the large background region of 6083.0 pixels or a rate
of 6.756 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 19.47 mag. for a
4-arcsec aperture.
Found 1376.0 counts in the XRT position region of 198.0 pixels or a rate of
6.949 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.208 +/- 0.159 (1-sigma) cps or
20.09 mag and a range from 19.47 to 21.67 mag. The 3-sigma UL at the XRT
position is 0.686 cps or 18.79 mag. The closest srclist source has ra= 318.0991
dec= -2.3257 mag=16.40 sep=45.66". The closest Genie source has ra= 318.1077
dec= -2.3312 mag=18.34 sep=44.71".
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?
551541277 275 U srclist found no candidates.
551541277 275 U image found no candidates.
List afterglow candidates for other finding charts.
551541119 117 WHITE srclist found no candidates.
551541119 117 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -2.33825
GRB_ERROR: 5
GRB_RA: 318.09750
IMAGE_START_TIME: 13:54:32
MAGNITUDE: 18.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT