image overlap message for exposure 3 of trigger 932608
uvot_overlap.pl vrs. 2010-12-20b fem started at 191101d00h29m05s109150usUT
The observation of trigger 932608 started 2019-10-31T21:38:14.7
Examining file ./932608_g882_uvot_sky_image.fits
The exposure ID is 594250694
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (283.2688,47.6338) with a roll angle of 243.8
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 (283.2750,47.6390) with a radius of 3.000 arc min
This is 0.401 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 (283.2895,47.6441) with a radius of 0.032 arc min
This is 1.040 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 3 of trigger 932608
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191101d00h29m23s798917usUT
Observation start time is 2019-10-31T21:38:14.7
Examining file ./932608_g882_uvot_catalog_image.fits
The exposure ID is 594250694
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 18 detected source(s) for 932608_g882
Aspect correction adds -0.00253 degrees (-0.606 sec of time = -6.13 arc sec) to RA
Aspect correction adds -0.00136 degrees (-4.89 arcsec) to Dec
Total aspect correction is 7.84 arcsec
Star catalogs centered at 283.2732 , 47.6362 with radius 2.51 arc min.
n_usno: 146 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.049
RA DEC Mag Color
bright star 0: 283.29667 (18:53:11.20) 47.62544 (+47:37:31.6) 11.05 USNO-V
Mean distance difference (CAT_DELTA) for 17 matched entries is 0.548" for 932608_g882
Mean and std. dev of mag. difference (MAG_DELTA) are 0.518 and 1.105 for 932608_g882
Found 3 entries without IDs and 0 entries that are acceptable afterglow candidates for 932608_g882.
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.
3 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=283.2750 (18:53:06.00) DEC=47.6390 (+47:38:20.4)
XRT distances are from RA=283.2895 (18:53:09.48) DEC=47.6441 (+47:38:38.6)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 10:
ra=283.29411 dec= 47.62952 +/- 0.6" mag=15.41+/-0.14 dist=53.5 REFID=2 flag=19
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 36165.168 counts in the bkg source region of 5803.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 6.232 counts/pixel (5-sig UL in 4" is 20.36 mag) for 932608_g882
There are 1274.3237 counts in the xrt source region of 199.00000 pixels.
Rate in xrt region with 8 arcsec radius is 6.404 counts/pixel for 932608_g882
XRT source is too far (62.3375423422251") from center -- do not compute local background.
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 20.91, 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: 932608_594250694_191101d00h29m23s798917usUT_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(283.2688,47.6338,45")
fk5;-circle(283.271089767639,47.6349874616984,6")
fk5;-circle(283.275613227531,47.6465076847679,6")
fk5;-circle(283.277301121066,47.6292994614959,6")
fk5;-circle(283.257032046404,47.6391261579411,6")
fk5;-circle(283.268533399976,47.6250396614803,6")
fk5;-circle(283.282542911954,47.6247276997128,6")
Region file: 932608_594250694_191101d00h29m23s798917usUT_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(283.28950,47.64406,8")
image paragraph message for exposure 3 of trigger 932608
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB191031 (Swift/BAT trigger 932608) at 21:23:31 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
0.08.
------- notes for trigger 932608 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191101d00h29m27s341469usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=932608
-expid=594250694 -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/932608/
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 594250694.67886 or about 2019:304:21:38:09 UT
Found 1857 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 18 source(s) in Genie image catalog. Found 3 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.91 mag. Found 142 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
15% of the Genie image region.
Genie image analysis:
Found 36165.2 counts in the large background region of 5803.0 pixels or a rate
of 6.232 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 20.36 mag. for a
4-arcsec aperture.
Found 1274.3 counts in the XRT position region of 199.0 pixels or a rate of
6.404 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is 0.227 +/- 0.242 (1-sigma) cps or
21.39 mag and a range from 20.60 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.953 cps or 19.83 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 19.43 mag. The closest
srclist source has ra= 283.2954 dec= 47.6414 mag=17.91 sep=17.14". The closest
Genie source has ra= 283.2954 dec= 47.6415 mag=17.22 sep=17.00".
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?
594250694 859 WHITE srclist found no candidates.
594250694 859 WHITE image found no candidates.
List afterglow candidates for other finding charts.
594249927 92 WHITE srclist found no candidates.
594249927 92 WHITE image found no candidates.
594250140 305 U srclist found no candidates.
594250140 305 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 47.64406
GRB_ERROR: 5
GRB_RA: 283.28950
IMAGE_START_TIME: 21:38:09
MAGNITUDE: 19.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT