image overlap message for exposure 2 of trigger 933515
uvot_overlap.pl vrs. 2010-12-20b fem started at 191106d15h44m51s102966usUT
The observation of trigger 933515 started 2019-11-06T14:30:09.7
Examining file ./933515_g885_uvot_sky_image.fits
The exposure ID is 594743409
The exposure time is 149.868 (seconds)
The filter is U.
The uvot region is centered at (269.3463,46.0490) with a roll angle of 227.5
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 (269.3500,46.0520) with a radius of 3.000 arc min
This is 0.236 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 (269.3356,46.0352) with a radius of 0.038 arc min
This is 0.937 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 933515
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191106d15h45m01s990789usUT
Observation start time is 2019-11-06T14:30:09.7
Examining file ./933515_g885_uvot_catalog_image.fits
The exposure ID is 594743409
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is U
There are 11 detected source(s) for 933515_g885
Aspect correction adds -0.00096 degrees (-0.230 sec of time = -2.40 arc sec) to RA
Aspect correction adds 0.00009 degrees ( 0.32 arcsec) to Dec
Total aspect correction is 2.42 arcsec
Star catalogs centered at 269.3448 , 46.0505 with radius 2.54 arc min.
n_usno: 105 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 10 matched entries is 0.372" for 933515_g885
Mean and std. dev of mag. difference (MAG_DELTA) are 0.578 and 0.562 for 933515_g885
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 933515_g885.
Acceptable entries have no ID, XRT distances < 5.75", 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=269.3500 (17:57:24.00) DEC=46.0520 (+46:03:07.2)
XRT distances are from RA=269.3356 (17:57:20.55) DEC=46.0352 (+46:02:06.9)
-----------------
Entry 9 in the list of sources is a candidate afterglow for 933515_g885 with genie
ra=269.32145 (17:57:17.15) dec=46.03287 (+46:01:58.3) +/- 0.8" mag=19.09+/-0.20
dist=36.4 REFID=11 major=1.9 minor=1.6 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 99.2 arc sec from the BAT position.
This source is near the edge of image (0.889)
Found 3 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
269.3245 46.0335 8.0 -1 USNO-B1 20.30 19.70 19.96
269.3281 46.0312 17.7 -1 USNO-B1 21.03 19.73 20.31
269.3173 46.0312 11.9 -1 USNO-B1 13.71 13.15 13.40
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 1.9
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
269.3339 46.0331 8.9 -1 USNO-B1 19.79 18.99 19.35
The closest star is 8.91" away.
List UVOT sources within 10" of the XRT position:
There are 7037.6772 counts in the bkg source region of 6093.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 1.155 counts/pixel (5-sig UL in 4" is 19.83 mag) for 933515_g885
There are 236.13515 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 1.181 counts/pixel for 933515_g885
XRT source is too far (56.2344723224653") 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 20.39, XRT distances < 5.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 933515_594743409_191106d15h45m01s990789usUT_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(269.3463,46.0490,45")
fk5;-circle(269.350411835692,46.0508752508247,6")
fk5;-circle(269.34090185498,46.0578866078318,6")
Region file: 933515_594743409_191106d15h45m01s990789usUT_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(269.33562,46.03525,8")
image paragraph message for exposure 2 of trigger 933515
------ Start for Possible Stand-alone Circular ----
In response to GRB191106 (Swift/BAT trigger 933515) at 14:15:23 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the U filter starting
861 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
0.06.
------- notes for trigger 933515 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191106d15h45m09s030600usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=933515
-expid=594743409 -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/933515/
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 594743409.72692 or about 2019:310:14:30:04 UT
Found 1232 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 10% of the srclist region. Found 138 sources in
srclist catalog. Found 54 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
17.84 mag.
Found 11 source(s) in Genie image catalog. Found 1 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.39 mag. Found 101 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
10% of the Genie image region.
Genie image analysis:
Found 7037.7 counts in the large background region of 6093.0 pixels or a rate
of 1.155 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 19.87 mag. for a
4-arcsec aperture.
Found 236.1 counts in the XRT position region of 200.0 pixels or a rate of
1.180 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is 0.034 +/- 0.104 (1-sigma) cps or
22.05 mag and a range from 20.53 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.346 cps or 19.53 mag. The closest srclist source has ra= 269.3449
dec= 46.0330 mag=19.23 sep=24.57". The closest Genie source has ra= 269.3284
dec= 46.0373 mag=20.48 sep=19.58".
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?
594743409 861 U srclist found no candidates.
594743409 861 U image found no candidates.
List afterglow candidates for other finding charts.
594742678 130 U srclist found no candidates.
594742678 130 U image found no candidates.
594747533 4985 WHITE srclist found no candidates.
594747533 4985 ? image data are not available.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 46.03525
GRB_ERROR: 5.75
GRB_RA: 269.33562
IMAGE_START_TIME: 14:30:04
MAGNITUDE: 19.5
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT