srclist overlap message for exposure 3 of trigger 907950
uvot_overlap.pl vrs. 2010-12-20b fem started at 190611d20h44m45s944570usUT
The observation of trigger 907950 started 2019-06-11T18:04:01.8
Examining file ./907950_g899_uvot_sky_srclist.fits
The exposure ID is 581969041
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (324.7793,-56.0828) with a roll angle of 97.0
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 (324.7690,-56.0820) with a radius of 3.000 arc min
This is 0.347 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 (324.7227,-56.0742) with a radius of 0.030 arc min
This is 1.963 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 907950
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190611d20h45m13s802929usUT
Observation start time is 2019-06-11T18:04:01.8
Examining file ./907950_g899_uvot_catalog_srclist.fits
The exposure ID is 581969041
The exposure is 38.872 sec.
The bin size is 2 pixels
The filter is WHITE
There are 46 detected source(s) for 907950_g899
Aspect correction adds 0.00245 degrees (0.588 sec of time = 4.93 arc sec) to RA
Aspect correction adds -0.00096 degrees (-3.44 arcsec) to Dec
Total aspect correction is 6.01 arcsec
Star catalogs centered at 324.8068 , -56.0789 with radius 8.75 arc min.
n_usno: 656 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 44 matched entries is 0.490" for 907950_g899
Mean and std. dev of mag. difference (MAG_DELTA) are 2.771 and 0.314 for 907950_g899
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 907950_g899.
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=324.7690 (21:39:04.56) DEC=-56.0820 (-56:04:55.2)
XRT distances are from RA=324.7227 (21:38:53.44) DEC=-56.0742 (-56:04:27.3)
-----------------
Entry 1 in the list of sources is a candidate afterglow for 907950_g899 with 3x3 stamp
ra=324.75465 (21:39:01.12) dec=-56.12265 (-56:07:21.5) +/- 1.1" mag=20.51+/-0.35
dist=185.7 REFID=46
*** The position of this source is inconsistent with the XRT position.
The position is 149.2 arc sec from the BAT position.
src: 1 distr. of nearby unmatched sources: 0 0 0 0 0
Found 1 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
324.7520 -56.1213 7.1 -1 USNO-B1 20.75 19.27 19.93
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 3 in the list of sources is a candidate afterglow for 907950_g899 with 3x3 stamp
ra=324.80228 (21:39:12.55) dec=-56.03809 (-56:02:17.1) +/- 1.1" mag=20.18+/-0.35
dist=206.4 REFID=45
*** The position of this source is inconsistent with the XRT position.
The position is 171.7 arc sec from the BAT position.
src: 3 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
324.7981 -56.0369 9.4 -1 USNO-B1 21.60 19.95 20.68
*** If XRT position is correct, then this is NOT the afterglow
Found 1 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
324.7233 -56.0738 2.0 -1 USNO-B1 20.98 19.34 20.07
The closest star is 2.01" away.
List UVOT sources within 10" of the XRT position:
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.49, 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 907950
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB190611 (Swift/BAT trigger 907950) at 17:49:01 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 39 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 0.04.
------- notes for trigger 907950 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190611d20h45m16s259561usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=907950
-expid=581969041 -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/907950/
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 581969041.764 or about 2019:162:18:03:56 UT
Found 652 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 46 sources in
srclist catalog. Found 2 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.49 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 19.27 mag. Found 24 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 4% of the
Genie image region.
Genie image analysis:
Found 52524.8 counts in the large background region of 6082.0 pixels or a rate
of 8.636 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 18.72 mag. for a
4-arcsec aperture. The closest srclist source has ra= 324.6562 dec= -56.1011
mag=19.29 sep=164.67". The closest Genie source has ra= 324.7810 dec= -56.0728
mag=19.56 sep=117.27".
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?
581969041 875 WHITE srclist found no candidates.
581969041 875 WHITE image found no candidates.
List afterglow candidates for other finding charts.
581968281 115 WHITE srclist found no candidates.
581968281 115 WHITE image found no candidates.
581968439 273 U srclist found no candidates.
581968439 273 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -56.07425
GRB_ERROR: 5
GRB_RA: 324.72267
IMAGE_START_TIME: 18:03:56
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT