srclist overlap message for exposure 2 of trigger 932742
uvot_overlap.pl vrs. 2010-12-20b fem started at 191101d23h52m14s417168usUT
The observation of trigger 932742 started 2019-11-01T21:12:54.8
Examining file ./932742_g290_uvot_sky_srclist.fits
The exposure ID is 594335574
The exposure time is undefined.
The filter is U.
The uvot region is centered at (251.8350,43.7365) with a roll angle of 217.3
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 (251.8440,43.7540) with a radius of 3.000 arc min
This is 1.121 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 (251.8373,43.7410) with a radius of 0.030 arc min
This is 0.286 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 932742
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191101d23h52m25s382927usUT
Observation start time is 2019-11-01T21:12:54.8
Examining file ./932742_g290_uvot_catalog_srclist.fits
The exposure ID is 594335574
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 89 detected source(s) for 932742_g290
Aspect correction adds -0.00015 degrees (-0.036 sec of time = -0.39 arc sec) to RA
Aspect correction adds -0.00138 degrees (-4.98 arcsec) to Dec
Total aspect correction is 5.00 arcsec
Star catalogs centered at 251.8434 , 43.7368 with radius 5.83 arc min.
n_usno: 376 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 10.41912
RA DEC Mag Color
bright star 0: 251.81992 (16:47:16.78) 43.66805 (+43:40:05.0) 10.42 USNO-V
bright star 1: 251.78558 (16:47:08.54) 43.67188 (+43:40:18.8) 11.91 USNO-V
bright star 2: 251.77361 (16:47:05.67) 43.81589 (+43:48:57.2) 11.26 USNO-V
Mean distance difference (CAT_DELTA) for 37 matched entries is 0.674" for 932742_g290
Mean and std. dev of mag. difference (MAG_DELTA) are 1.204 and 0.831 for 932742_g290
Found 52 entries without IDs and 2 entries that are acceptable afterglow candidates for 932742_g290.
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.
49 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=251.8440 (16:47:22.56) DEC=43.7540 (+43:45:14.4)
XRT distances are from RA=251.8373 (16:47:20.94) DEC=43.7410 (+43:44:27.5)
*** WARNING 58 per cent of entries have no IDs.
-----------------
Entry 21 in the list of sources is a candidate afterglow for 932742_g290 with 3x3 stamp
ra=251.90912 (16:47:38.19) dec=43.76720 (+43:46:01.9) +/- 1.1" mag=19.29+/-0.35
dist=209.4 REFID=85
*** The position of this source is inconsistent with the XRT position.
The position is 175.9 arc sec from the BAT position.
src: 21 distr. of nearby unmatched sources: 1 0 0 0 0
Found 2 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
251.9094 43.7663 3.5 -1 USNO-B1 13.80 13.03 13.37 *
251.9133 43.7692 12.9 -1 USNO-B1 16.27 15.09 15.62
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 22 in the list of sources is a candidate afterglow for 932742_g290 with 3x3 stamp
ra=251.90901 (16:47:38.16) dec=43.76761 (+43:46:03.4) +/- 1.1" mag=19.06+/-0.35
dist=209.8 REFID=74
*** The position of this source is inconsistent with the XRT position.
The position is 176.0 arc sec from the BAT position.
src: 22 distr. of nearby unmatched sources: 1 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
251.9094 43.7663 5.0 -1 USNO-B1 13.80 13.03 13.37
251.9133 43.7692 12.4 -1 USNO-B1 16.27 15.09 15.62
*** If XRT position is correct, then this is NOT the afterglow
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
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 932742
------ Start for Possible Stand-alone Circular ----
In response to GRB191101 (Swift/BAT trigger 932742) at 21:08:03 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
267 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
0.01.
------- notes for trigger 932742 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191101d23h52m27s762676usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=932742
-expid=594335574 -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/932742/
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 594335574.8151 or about 2019:305:21:12:49 UT
Found 372 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 7% of the srclist region. Found 89 sources in
srclist catalog. Found 52 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 5 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 20.65 mag. Found 50 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 7% of the
Genie image region.
Genie image analysis:
Found 11946.1 counts in the large background region of 6079.0 pixels or a rate
of 1.965 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 20.14 mag. for a
4-arcsec aperture.
Found 399.3 counts in the XRT position region of 199.0 pixels or a rate of
2.007 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.078 +/- 0.086 (1-sigma) cps or
21.15 mag and a range from 20.34 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.337 cps or 19.56 mag. The closest srclist source has ra= 251.8288
dec= 43.7400 mag=18.87 sep=22.25". The closest Genie source has ra= 251.8340
dec= 43.7438 mag=18.58 sep=13.29".
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?
594335574 266 U srclist found no candidates.
594335574 266 U image found no candidates.
List afterglow candidates for other finding charts.
594335416 108 WHITE srclist found no candidates.
594335416 108 WHITE image found no candidates.
594336177 869 WHITE srclist found no candidates.
594336177 869 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 43.74097
GRB_ERROR: 5
GRB_RA: 251.83725
IMAGE_START_TIME: 21:12:49
MAGNITUDE: 19.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT