srclist overlap message for exposure 2 of trigger 932595
uvot_overlap.pl vrs. 2010-12-20b fem started at 191031d22h54m04s647919usUT
The observation of trigger 932595 started 2019-10-31T18:58:38.2
Examining file ./932595_g883_uvot_sky_srclist.fits
The exposure ID is 594241118
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (115.8769,-62.3264) with a roll angle of 105.3
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (115.8620,-62.3350) with a radius of 3.000 arc min
This is 0.664 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 (115.8705,-62.3247) with a radius of 0.030 arc min
This is 0.205 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
srclist afterglow message for exposure 2 of trigger 932595
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191031d22h54m13s814432usUT
Observation start time is 2019-10-31T18:58:38.2
Examining file ./932595_g883_uvot_catalog_srclist.fits
The exposure ID is 594241118
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 932595_g883
*** 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 932595_g883 has mag 19.43
Aspect correction adds 0.00072 degrees (0.174 sec of time = 1.21 arc sec) to RA
Aspect correction adds -0.00096 degrees (-3.47 arcsec) to Dec
Total aspect correction is 3.68 arcsec
Star catalogs centered at 115.8777 , -62.3205 with radius 8.82 arc min.
n_usno: 1876 n_gsc: 0
*** WARNING -- bright star catalog has 6 entries brighter than 12 mag
The brightest has mag 10.60934
RA DEC Mag Color
bright star 0: 115.77389 (07:43:05.73) -62.31200 (-62:18:43.2) 11.82 USNO-V
bright star 1: 115.84870 (07:43:23.69) -62.37400 (-62:22:26.4) 11.96 USNO-V
bright star 2: 115.77107 (07:43:05.06) -62.36492 (-62:21:53.7) 10.61 USNO-V
bright star 3: 116.07927 (07:44:19.03) -62.29619 (-62:17:46.3) 11.63 USNO-V
bright star 4: 115.95769 (07:43:49.85) -62.22923 (-62:13:45.2) 11.60 USNO-V
bright star 5: 115.64024 (07:42:33.66) -62.39802 (-62:23:52.9) 11.52 USNO-V
Mean distance difference (CAT_DELTA) for 182 matched entries is 0.821" for 932595_g883
Mean and std. dev of mag. difference (MAG_DELTA) are 1.552 and 0.675 for 932595_g883
Found 16 entries without IDs and 2 entries that are acceptable afterglow candidates for 932595_g883.
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.
9 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=115.8620 (07:43:26.88) DEC=-62.3350 (-62:20:06.0)
XRT distances are from RA=115.8705 (07:43:28.92) DEC=-62.3247 (-62:19:28.8)
-----------------
Entry 7 in the list of sources is a candidate afterglow for 932595_g883 with 1x1 stamp
ra=115.90634 (07:43:37.52) dec=-62.33531 (-62:20:07.1) +/- 1.1" mag=18.88+/-0.35
dist=71.1 REFID=141
*** The position of this source is inconsistent with the XRT position.
The position is 74.1 arc sec from the BAT position.
src: 7 srclist_match has ID
src: 7 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
115.9021 -62.3328 11.5 -1 USNO-B1 17.84 16.73 17.22
115.9022 -62.3347 7.3 -1 USNO-B1 18.04 18.93 18.53
115.9043 -62.3351 3.5 -1 USNO-B1 20.72 17.86 19.13 *
115.9051 -62.3353 2.1 -1 USNO-B1 18.13 16.56 17.26 *
115.9038 -62.3359 4.9 -1 USNO-B1 99.99 19.19 99.99
115.9033 -62.3362 5.9 -1 USNO-B1 21.01 15.97 18.21
115.9036 -62.3366 6.5 -1 USNO-B1 21.43 18.95 20.05
115.8977 -62.3383 18.2 -1 USNO-B1 18.15 17.38 17.72
115.8985 -62.3382 16.8 -1 USNO-B1 99.99 18.76 99.99
115.9074 -62.3355 1.9 -1 USNO-B1 20.36 17.38 18.70 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 17 in the list of sources is a candidate afterglow for 932595_g883 with 1x1 stamp
ra=115.81855 (07:43:16.45) dec=-62.29818 (-62:17:53.5) +/- 1.1" mag=18.03+/-0.35
dist=129.0 REFID=179
*** The position of this source is inconsistent with the XRT position.
The position is 151.2 arc sec from the BAT position.
src: 17 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
115.8134 -62.3019 16.0 -1 USNO-B1 99.99 20.47 99.99
115.8171 -62.2976 3.3 -1 USNO-B1 15.26 14.21 14.68 *
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 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 2 of trigger 932595
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB191031 (Swift/BAT trigger 932595) at 18:43:54 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 859 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
0.17.
------- notes for trigger 932595 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191031d22h54m17s672945usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=932595
-expid=594241118 -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/932595/
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 594241118.23704 or about 2019:304:18:58:33 UT
Found 1872 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 16% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 16 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 16 source(s) in Genie image catalog. Found 1 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.75 mag. Found 175 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
17% of the Genie image region.
Genie image analysis:
Found 50830.9 counts in the large background region of 6017.0 pixels or a rate
of 8.448 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 20.19 mag. for a
4-arcsec aperture.
Found 1745.1 counts in the XRT position region of 202.0 pixels or a rate of
8.639 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.250 +/- 0.302 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.907 cps or 19.89 mag. The number of srclist
sources filled the available telemetry. The weakest source detected was 19.43
mag. The closest srclist source has ra= 115.8678 dec= -62.3292 mag=18.62
sep=17.04". The closest Genie source has ra= 115.8674 dec= -62.3293 mag=18.10
sep=17.44".
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?
594241118 859 WHITE srclist found no candidates.
594241118 859 WHITE image found no candidates.
List afterglow candidates for other finding charts.
594240348 89 WHITE srclist found no candidates.
594240348 89 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -62.32467
GRB_ERROR: 5
GRB_RA: 115.87050
IMAGE_START_TIME: 18:58:33
MAGNITUDE: 19.9
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT