srclist overlap message for exposure 3 of trigger 865036
uvot_overlap.pl vrs. 2010-12-20b fem started at 181002d13h46m32s876084usUT
The observation of trigger 865036 started 2018-10-02T11:41:23.3
Examining file ./865036_g879_uvot_sky_srclist.fits
The exposure ID is 560173283
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (64.7485,15.2147) with a roll angle of 84.2
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 (64.7360,15.2330) with a radius of 3.000 arc min
This is 1.315 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 (64.7466,15.2129) with a radius of 0.033 arc min
This is 0.151 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 3 of trigger 865036
find_uvot_ag.pl vrs. 2017-02-17 fem started at 181002d13h46m46s790873usUT
Observation start time is 2018-10-02T11:41:23.3
Examining file ./865036_g879_uvot_catalog_srclist.fits
The exposure ID is 560173283
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 38 detected source(s) for 865036_g879
Aspect correction adds 0.00092 degrees (0.220 sec of time = 3.18 arc sec) to RA
Aspect correction adds -0.00035 degrees (-1.25 arcsec) to Dec
Total aspect correction is 3.42 arcsec
Star catalogs centered at 64.7252 , 15.2059 with radius 7.96 arc min.
n_usno: 552 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.53232
RA DEC Mag Color
bright star 0: 64.72262 (04:18:53.43) 15.08863 (+15:05:19.1) 11.53 USNO-V
Mean distance difference (CAT_DELTA) for 21 matched entries is 0.736" for 865036_g879
Mean and std. dev of mag. difference (MAG_DELTA) are 1.949 and 0.865 for 865036_g879
Found 17 entries without IDs and 5 entries that are acceptable afterglow candidates for 865036_g879.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=64.7360 (04:18:56.64) DEC=15.2330 (+15:13:58.8)
XRT distances are from RA=64.7466 (04:18:59.19) DEC=15.2129 (+15:12:46.4)
*** WARNING 44 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 865036_g879 with 5x5 stamp
ra=64.73572 (04:18:56.57) dec=15.21411 (+15:12:50.8) +/- 1.1" mag=17.03+/-0.35
dist=38.1 REFID=2
*** The position of this source is inconsistent with the XRT position.
The position is 68.0 arc sec from the BAT position.
src: 0 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
64.7357 15.2131 3.6 -1 USNO-B1 15.50 14.45 14.92 *
64.7403 15.2167 18.6 -1 USNO-B1 99.99 20.18 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 6 in the list of sources is a candidate afterglow for 865036_g879 with 5x5 stamp
ra=64.70493 (04:18:49.18) dec=15.23314 (+15:13:59.3) +/- 1.1" mag=18.24+/-0.35
dist=162.1 REFID=14
*** The position of this source is inconsistent with the XRT position.
The position is 107.9 arc sec from the BAT position.
src: 6 distr. of nearby unmatched sources: 0 0 0 1 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
64.7074 15.2320 9.7 -1 USNO-B1 99.99 19.98 99.99
64.7049 15.2320 4.1 -1 USNO-B1 17.23 16.20 16.66
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 7 in the list of sources is a candidate afterglow for 865036_g879 with 5x5 stamp
ra=64.77061 (04:19:04.95) dec=15.24775 (+15:14:51.9) +/- 1.1" mag=18.30+/-0.35
dist=150.6 REFID=15
*** The position of this source is inconsistent with the XRT position.
The position is 131.4 arc sec from the BAT position.
src: 7 distr. of nearby unmatched sources: 0 0 0 0 0
Found 4 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
64.7689 15.2483 6.3 -1 USNO-B1 21.41 19.61 20.41
64.7706 15.2467 3.9 -1 USNO-B1 17.13 16.07 16.54 *
64.7698 15.2477 2.7 -1 USNO-B1 17.25 18.91 18.17 *
64.7738 15.2523 19.8 -1 USNO-B1 99.99 19.95 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 9 in the list of sources is a candidate afterglow for 865036_g879 with 5x5 stamp
ra=64.69942 (04:18:47.86) dec=15.23444 (+15:14:04.0) +/- 1.1" mag=19.38+/-0.35
dist=181.4 REFID=38
*** The position of this source is inconsistent with the XRT position.
The position is 127.2 arc sec from the BAT position.
src: 9 distr. of nearby unmatched sources: 0 0 0 1 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 16 in the list of sources is a candidate afterglow for 865036_g879 with 5x5 stamp
ra=64.70335 (04:18:48.81) dec=15.26093 (+15:15:39.3) +/- 1.1" mag=16.73+/-0.35
dist=229.1 REFID=1
*** The position of this source is inconsistent with the XRT position.
The position is 151.5 arc sec from the BAT position.
src: 16 distr. of nearby unmatched sources: 1 0 0 0 0
Found 1 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
64.7034 15.2599 3.6 -1 USNO-B1 15.48 14.51 14.94 *
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 1 candidate(s) outside XRT error circle with mag < 18.66
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 3 of trigger 865036
------ Start for Possible Stand-alone Circular ----
In response to GRB181002 (Swift/BAT trigger 865036) at 11:26:43 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 858 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
0.60.
------- notes for trigger 865036 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 181002d13h46m49s048955usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=865036
-expid=560173283 -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/865036/
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 560173283.3162 or about 2018:275:11:41:18 UT
Found 548 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 38 sources in
srclist catalog. Found 17 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 1 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 20.07 mag. Found 36 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 6% of the
Genie image region.
Genie image analysis:
Found 184633.9 counts in the large background region of 6257.0 pixels or a rate
of 29.508 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 19.51 mag. for a
4-arcsec aperture.
Found 5836.3 counts in the XRT position region of 200.0 pixels or a rate of
29.181 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.692 +/- 0.549 (1-sigma) cps. The
3-sigma UL at the XRT position is 1.648 cps or 19.24 mag. The closest srclist
source has ra= 64.7357 dec= 15.2141 mag=17.03 sep=38.13". The closest Genie
source has ra= 64.7357 dec= 15.2135 mag=15.68 sep=37.97".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the srclist data with mag < 18.66 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=64.70493
(04:18:49.18), DEC=15.23314 (+15:13:59.3) (J2000). It has a mag of 18.24. It is
107.9" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 858 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 04:18:49.18 = 64.70493
DEC(J2000) = +15:13:59.3 = 15.23314
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 18.24 with a 1-sigma error of about 0.35. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.60.
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?
560173283 858 WHITE srclist found no candidates.
560173283 858 WHITE image found no candidates.
List afterglow candidates for other finding charts.
560172569 144 WHITE srclist found no candidates.
560172569 144 WHITE image found no candidates.
560172727 302 U srclist found no candidates.
560172727 302 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 15.21289
GRB_ERROR: 5
GRB_RA: 64.74662
IMAGE_START_TIME: 11:41:18
MAGNITUDE: 19.2
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT