image overlap message for exposure 2 of trigger 1085430
uvot_overlap.pl vrs. 2010-12-20b fem started at 211129d14h10m53s872273usUT
The observation of trigger 1085430 started 2021-11-29T09:56:31.0
Examining file ./1085430_g324_uvot_sky_image.fits
The exposure ID is 659872591
The exposure time is 249.901 (seconds)
The filter is U.
The uvot region is centered at (274.5801,31.7851) with a roll angle of 211.3
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 (274.5570,31.7760) with a radius of 3.000 arc min
This is 1.297 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 (274.5803,31.7889) with a radius of 0.035 arc min
This is 0.227 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1085430
find_uvot_ag.pl vrs. 2020-10-30 fem started at 211129d14h11m07s869860usUT
Observation start time is 2021-11-29T09:56:31.0
Examining file ./1085430_g324_uvot_catalog_image.fits
The exposure ID is 659872591
The exposure is 249.901 sec.
The bin size is 2 pixels
The filter is U
There are 10 detected source(s) for 1085430_g324
Aspect correction adds -0.00137 degrees (-0.330 sec of time = -4.20 arc sec) to RA
Aspect correction adds 0.00005 degrees ( 0.19 arcsec) to Dec
Total aspect correction is 4.21 arcsec
Star catalogs centered at 274.5784 , 31.7871 with radius 2.70 arc min.
n_usno: 151 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.4176
RA DEC Mag Color
bright star 0: 274.58802 (18:18:21.12) 31.79251 (+31:47:33.0) 11.42 USNO-V
Mean distance difference (CAT_DELTA) for 10 matched entries is 0.406" for 1085430_g324
Mean and std. dev of mag. difference (MAG_DELTA) are 1.343 and 0.893 for 1085430_g324
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1085430_g324.
Acceptable entries have no ID, XRT distances < 5.25", 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=274.5570 (18:18:13.68) DEC=31.7760 (+31:46:33.6)
XRT distances are from RA=274.5803 (18:18:19.27) DEC=31.7889 (+31:47:19.9)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 15518.454 counts in the bkg source region of 6090.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.548 counts/pixel (5-sig UL in 4" is 19.96 mag) for 1085430_g324
There are 496.43527 counts in the xrt source region of 199.00000 pixels.
Rate in xrt region with 8 arcsec radius is 2.495 counts/pixel for 1085430_g324
There are 3249.7405 counts in the xrt_bkg source region of 1160.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 2.802 counts/pixel (5-sig UL in 4" is 19.91 mag) for 1085430_g324
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 20.51, XRT distances < 5.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1085430_659872591_211129d14h11m07s869860usUT_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(274.5801,31.7851,45")
fk5;-circle(274.588034936045,31.7925641880825,6")
fk5;-circle(274.576369877245,31.7948731384711,6")
Region file: 1085430_659872591_211129d14h11m07s869860usUT_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(274.58029,31.78886,8")
Region file: 1085430_659872591_211129d14h11m07s869860usUT_xrt_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(274.58029,31.78886,25")
fk5;-circle(274.58029,31.78886,15")
fk5;-circle(274.588034936045,31.7925641880825,6")
fk5;-circle(274.576369877245,31.7948731384711,6")
image paragraph message for exposure 2 of trigger 1085430
------ Start for Possible Stand-alone Circular ----
In response to GRB211129 (Swift/BAT trigger 1085430) at 09:51:06 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
296 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
0.081.
------- notes for trigger 1085430 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 211129d14h11m12s313431usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1085430
-expid=659872591 -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/1085430/
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 659872591.0021 or about 2021:333:09:56:26 UT
Found 823 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 13% of the srclist region. Found 95 sources in
srclist catalog. Found 14 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 10 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 20.51 mag. Found 147 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
14% of the Genie image region.
Genie image analysis:
Found 15518.5 counts in the large background region of 6090.0 pixels or a rate
of 2.548 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 19.80 mag. for a
4-arcsec aperture.
Found 496.4 counts in the XRT position region of 199.0 pixels or a rate of
2.494 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.244 +/- 0.097 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.292 cps or 19.52 mag. The closest srclist
source has ra= 274.5765 dec= 31.7949 mag=18.28 sep=24.64". The closest Genie
source has ra= 274.5764 dec= 31.7949 mag=18.01 sep=24.75".
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?
659872591 296 U srclist found no candidates.
659872591 296 U image found no candidates.
List afterglow candidates for other finding charts.
659872378 83 WHITE srclist found no candidates.
659872378 83 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 31.78886
GRB_ERROR: 5.25
GRB_RA: 274.58029
IMAGE_START_TIME: 09:56:26
MAGNITUDE: 19.5
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT