image overlap message for exposure 1 of trigger 932595
uvot_overlap.pl vrs. 2010-12-20b fem started at 191031d22h54m05s225939usUT
The observation of trigger 932595 started 2019-10-31T18:45:48.8
Examining file ./932595_g113_uvot_sky_image.fits
The exposure ID is 594240348
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (115.8840,-62.3235) with a roll angle of 105.3
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (115.8620,-62.3350) with a radius of 3.000 arc min
This is 0.925 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 7.17 sq. arc min or 0.25 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 0.384 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
image afterglow message for exposure 1 of trigger 932595
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191031d22h54m09s172326usUT
Observation start time is 2019-10-31T18:45:48.8
Examining file ./932595_g113_uvot_catalog_image.fits
The exposure ID is 594240348
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 16 detected source(s) for 932595_g113
Aspect correction adds 0.00037 degrees (0.090 sec of time = 0.62 arc sec) to RA
Aspect correction adds -0.00081 degrees (-2.92 arcsec) to Dec
Total aspect correction is 2.99 arcsec
Star catalogs centered at 115.8807 , -62.3207 with radius 2.53 arc min.
n_usno: 167 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 18 matched entries is 0.510" for 932595_g113
Mean and std. dev of mag. difference (MAG_DELTA) are 0.800 and 0.683 for 932595_g113
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 932595_g113.
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.
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 15 in the list of sources is a candidate afterglow for 932595_g113 with genie
ra=115.90604 (07:43:37.45) dec=-62.33533 (-62:20:07.2) +/- 0.6" mag=18.40+/-0.15
dist=70.7 REFID=16 major=1.2 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 73.6 arc sec from the BAT position.
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 11.3 -1 USNO-B1 17.84 16.73 17.22
115.9022 -62.3347 6.8 -1 USNO-B1 18.04 18.93 18.53
115.9043 -62.3351 3.0 -1 USNO-B1 20.72 17.86 19.13 *
115.9051 -62.3353 1.6 -1 USNO-B1 18.13 16.56 17.26 *
115.9038 -62.3359 4.4 -1 USNO-B1 99.99 19.19 99.99
115.9033 -62.3362 5.4 -1 USNO-B1 21.01 15.97 18.21
115.9036 -62.3366 6.1 -1 USNO-B1 21.43 18.95 20.05
115.8977 -62.3383 17.7 -1 USNO-B1 18.15 17.38 17.72
115.9074 -62.3355 2.3 -1 USNO-B1 20.36 17.38 18.70 *
115.8985 -62.3382 16.3 -1 USNO-B1 99.99 18.76 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 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 49386.371 counts in the bkg source region of 5922.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 8.339 counts/pixel (5-sig UL in 4" is 20.20 mag) for 932595_g113
There are 1760.6548 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 8.892 counts/pixel for 932595_g113
There are 9827.4600 counts in the xrt_bkg source region of 1154.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 8.516 counts/pixel (5-sig UL in 4" is 20.19 mag) for 932595_g113
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 20.75, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 932595_594240348_191031d22h54m09s172326usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(115.8840,-62.3235,45")
fk5;-circle(115.867256836156,-62.3292882564654,6")
fk5;-circle(115.857950459993,-62.3169982102224,6")
fk5;-circle(115.879906837856,-62.3155137305875,6")
fk5;-circle(115.898004932387,-62.3184755447326,6")
fk5;-circle(115.902116221019,-62.332736303882,6")
Region file: 932595_594240348_191031d22h54m09s172326usUT_xrt.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(115.87050,-62.32467,8")
Region file: 932595_594240348_191031d22h54m09s172326usUT_xrt_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(115.87050,-62.32467,25")
fk5;-circle(115.87050,-62.32467,15")
fk5;-circle(115.867256836156,-62.3292882564654,6")
image paragraph message for exposure 1 of trigger 932595
------ 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 90 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 191031d22h54m12s327752usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=932595
-expid=594240348 -meonly -msg_image
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 594240348.82324 or about 2019:304:18:45:43 UT
Found 877 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 17% of the srclist region. Found 138 sources in
srclist catalog. Found 36 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 163 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 49386.4 counts in the large background region of 5922.0 pixels or a rate
of 8.339 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 20.20 mag. for a
4-arcsec aperture.
Found 1760.7 counts in the XRT position region of 198.0 pixels or a rate of
8.892 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.497 +/- 0.302 (1-sigma) cps or
20.54 mag and a range from 20.02 to 21.55 mag. The 3-sigma UL at the XRT
position is 1.402 cps or 19.41 mag. The closest srclist source has ra= 115.8675
dec= -62.3293 mag=18.88 sep=17.52". The closest Genie source has ra= 115.8673
dec= -62.3293 mag=18.08 sep=17.49".
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?
594240348 89 WHITE srclist found no candidates.
594240348 89 WHITE image found no candidates.
List afterglow candidates for other finding charts.
594241118 859 WHITE srclist found no candidates.
594241118 859 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: 18:45:43
MAGNITUDE: 19.4
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT