srclist overlap message for exposure 3 of trigger 987016
uvot_overlap.pl vrs. 2010-12-20b fem started at 200807d02h50m26s540672usUT
The observation of trigger 987016 started 2020-08-06T15:43:51.4
Examining file ./987016_g901_uvot_sky_srclist.fits
The exposure ID is 618421431
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (52.9343,37.0816) with a roll angle of 80.1
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 (52.9050,37.0820) with a radius of 3.000 arc min
This is 1.404 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 (52.9321,37.0787) with a radius of 0.028 arc min
This is 0.200 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 987016
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200807d02h50m49s553951usUT
Observation start time is 2020-08-06T15:43:51.4
Examining file ./987016_g901_uvot_catalog_srclist.fits
The exposure ID is 618421431
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 171 detected source(s) for 987016_g901
Aspect correction adds 0.00082 degrees (0.198 sec of time = 2.37 arc sec) to RA
Aspect correction adds -0.00023 degrees (-0.83 arcsec) to Dec
Total aspect correction is 2.51 arcsec
Star catalogs centered at 52.9298 , 37.0800 with radius 9.11 arc min.
n_usno: 1187 n_gsc: 0
*** WARNING -- bright star catalog has 6 entries brighter than 12 mag
The brightest has mag 9.04176
RA DEC Mag Color
bright star 0: 52.86212 (03:31:26.91) 37.12666 (+37:07:36.0) 10.91 USNO-V
bright star 1: 53.00213 (03:32:00.51) 37.14433 (+37:08:39.6) 11.95 USNO-V
bright star 2: 52.83035 (03:31:19.28) 37.13000 (+37:07:48.0) 11.98 USNO-V
bright star 3: 52.97950 (03:31:55.08) 36.98703 (+36:59:13.3) 9.04 USNO-V
bright star 4: 52.77451 (03:31:05.88) 37.11436 (+37:06:51.7) 10.98 USNO-V
bright star 5: 52.78507 (03:31:08.42) 37.17106 (+37:10:15.8) 11.34 USNO-V
Mean distance difference (CAT_DELTA) for 99 matched entries is 0.827" for 987016_g901
Mean and std. dev of mag. difference (MAG_DELTA) are 1.638 and 0.749 for 987016_g901
Found 72 entries without IDs and 5 entries that are acceptable afterglow candidates for 987016_g901.
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=52.9050 (03:31:37.20) DEC=37.0820 (+37:04:55.2)
XRT distances are from RA=52.9321 (03:31:43.71) DEC=37.0787 (+37:04:43.5)
*** WARNING 42 per cent of entries have no IDs.
-----------------
Entry 5 in the list of sources is a candidate afterglow for 987016_g901 with 3x3 stamp
ra=52.90072 (03:31:36.17) dec=37.07615 (+37:04:34.1) +/- 1.1" mag=14.55+/-0.35
dist=90.7 REFID=2
*** The position of this source is inconsistent with the XRT position.
The position is 24.4 arc sec from the BAT position.
src: 5 distr. of nearby unmatched sources: 1 0 0 0 0
Found 4 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
52.9061 37.0784 17.4 -1 USNO-B1 20.74 19.09 19.83
52.9039 37.0806 18.5 -1 USNO-B1 99.99 19.87 99.99
52.9003 37.0769 2.8 -1 USNO-B1 13.07 11.84 12.38 *
52.8998 37.0725 13.6 -1 USNO-B1 20.64 19.86 20.21
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 12 in the list of sources is a candidate afterglow for 987016_g901 with 1x1 stamp
ra=52.95523 (03:31:49.25) dec=37.05345 (+37:03:12.4) +/- 1.1" mag=18.74+/-0.35
dist=112.7 REFID=158
*** The position of this source is inconsistent with the XRT position.
The position is 177.1 arc sec from the BAT position.
src: 12 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
52.9551 37.0540 2.0 -1 USNO-B1 18.57 17.00 17.69 *
52.9553 37.0510 8.7 -1 USNO-B1 20.17 19.91 20.03
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 16 in the list of sources is a candidate afterglow for 987016_g901 with 3x3 stamp
ra=52.95141 (03:31:48.34) dec=37.04596 (+37:02:45.5) +/- 1.1" mag=18.91+/-0.35
dist=130.4 REFID=107
*** The position of this source is inconsistent with the XRT position.
The position is 186.0 arc sec from the BAT position.
src: 16 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
52.9464 37.0496 19.5 -1 USNO-B1 16.82 14.98 15.80
52.9516 37.0466 2.3 -1 USNO-B1 18.12 17.14 17.57 *
52.9519 37.0467 2.8 -1 USNO-B1 18.57 16.82 17.60 *
52.9544 37.0466 8.9 -1 USNO-B1 20.46 99.99 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 23 in the list of sources is a candidate afterglow for 987016_g901 with 1x1 stamp
ra=52.87681 (03:31:30.43) dec=37.05400 (+37:03:14.4) +/- 1.1" mag=18.70+/-0.35
dist=182.2 REFID=136
*** The position of this source is inconsistent with the XRT position.
The position is 129.3 arc sec from the BAT position.
src: 23 distr. of nearby unmatched sources: 0 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
52.8766 37.0547 2.4 -1 USNO-B1 18.46 17.02 17.66 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 25 in the list of sources is a candidate afterglow for 987016_g901 with 1x1 stamp
ra=52.88438 (03:31:32.25) dec=37.11835 (+37:07:06.1) +/- 1.1" mag=18.74+/-0.35
dist=197.7 REFID=167
*** The position of this source is inconsistent with the XRT position.
The position is 143.6 arc sec from the BAT position.
src: 25 distr. of nearby unmatched sources: 0 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
52.8900 37.1172 16.8 -1 USNO-B1 19.95 18.10 18.93
*** 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 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 987016
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB200806 (Swift/BAT trigger 987016) at 15:28:49 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 876 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 none of
the XRT error circle. 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 0.42.
------- notes for trigger 987016 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200807d02h50m53s795355usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=987016
-expid=618421431 -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/987016/
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 618421431.41172 or about 2020:219:15:43:46 UT
Found 1183 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 9% of the srclist region. Found 171 sources in
srclist catalog. Found 72 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 2 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 20.05 mag. Found 54 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 9% of the
Genie image region. The Genie image is INCOMPLETE with 15495 null pixels.
Genie image analysis:
Found 49459.0 counts in the large background region of 1637.0 pixels or a rate
of 30.213 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 19.50 mag. for a
4-arcsec aperture. The closest srclist source has ra= 52.9260 dec= 37.0775
mag=16.62 sep=18.28". The closest Genie source has ra= 52.9459 dec= 37.0939
mag=15.06 sep=67.35".
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?
618421431 875 WHITE srclist found no candidates.
618421431 875 WHITE image found no candidates.
List afterglow candidates for other finding charts.
618420641 85 WHITE srclist found no candidates.
618420641 85 WHITE image found no candidates.
618420854 298 U srclist found no candidates.
618420854 298 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 37.07875
GRB_ERROR: 5
GRB_RA: 52.93212
IMAGE_START_TIME: 15:43:46
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT