image overlap message for exposure 1 of trigger 885314
uvot_overlap.pl vrs. 2010-12-20b fem started at 190123d14h10m14s507488usUT
The observation of trigger 885314 started 2019-01-23T12:21:39.9
Examining file ./885314_g145_uvot_sky_image.fits
The exposure ID is 569938899
The exposure time is 125.138 (seconds)
The filter is WHITE.
The uvot region is centered at (53.2157,45.5234) with a roll angle of 268.2
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 (53.2290,45.4840) with a radius of 3.000 arc min
This is 2.429 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 4.97 sq. arc min or 0.18 of the BAT error circle
The XRT error circle is centered at (53.2206,45.5253) with a radius of 0.038 arc min
This is 0.236 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 1 of trigger 885314
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190123d14h10m18s715512usUT
Observation start time is 2019-01-23T12:21:39.9
Examining file ./885314_g145_uvot_catalog_image.fits
The exposure ID is 569938899
The exposure is 125.138 sec.
The bin size is 2 pixels
The filter is WHITE
There are 29 detected source(s) for 885314_g145
Aspect correction adds -0.00047 degrees (-0.112 sec of time = -1.18 arc sec) to RA
Aspect correction adds 0.00076 degrees ( 2.73 arcsec) to Dec
Total aspect correction is 2.98 arcsec
Star catalogs centered at 53.2189 , 45.5229 with radius 2.66 arc min.
n_usno: 237 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 30 matched entries is 0.438" for 885314_g145
Mean and std. dev of mag. difference (MAG_DELTA) are 1.084 and 0.520 for 885314_g145
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 885314_g145.
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=53.2290 (03:32:54.96) DEC=45.4840 (+45:29:02.4)
XRT distances are from RA=53.2206 (03:32:52.94) DEC=45.5253 (+45:31:31.1)
Found 2 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
53.2178 45.5243 7.9 -1 USNO-B1 20.18 18.92 19.48
53.2171 45.5251 8.8 -1 USNO-B1 20.15 19.58 19.83
The closest star is 7.93" away.
List UVOT sources within 10" of the XRT position:
There are 50399.254 counts in the bkg source region of 5528.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 9.117 counts/pixel (5-sig UL in 4" is 19.95 mag) for 885314_g145
There are 1890.6649 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 9.549 counts/pixel for 885314_g145
There are 9109.4258 counts in the xrt_bkg source region of 1021.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 8.922 counts/pixel (5-sig UL in 4" is 19.97 mag) for 885314_g145
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 < 5.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 885314_569938899_190123d14h10m18s715512usUT_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(53.2157,45.5234,45")
fk5;-circle(53.2262358753196,45.5247765847116,6")
fk5;-circle(53.2244298377372,45.5301063500404,6")
fk5;-circle(53.2165601330451,45.5224494871506,6")
fk5;-circle(53.2258683999962,45.5172839824504,6")
fk5;-circle(53.2155392323983,45.5180655437567,6")
fk5;-circle(53.2087204445403,45.5300087821828,6")
fk5;-circle(53.2192521386302,45.5136030068543,6")
Region file: 885314_569938899_190123d14h10m18s715512usUT_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(53.22058,45.52531,8")
Region file: 885314_569938899_190123d14h10m18s715512usUT_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(53.22058,45.52531,25")
fk5;-circle(53.22058,45.52531,15")
fk5;-circle(53.2262358753196,45.5247765847116,6")
fk5;-circle(53.2244298377372,45.5301063500404,6")
fk5;-circle(53.2165601330451,45.5224494871506,6")
fk5;-circle(53.2155392323983,45.5180655437567,6")
image paragraph message for exposure 1 of trigger 885314
------ Start for Possible Stand-alone Circular ----
In response to GRB190123 (Swift/BAT trigger 885314) at 12:19:13 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 125 seconds with the White filter
starting 124 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
0.44.
------- notes for trigger 885314 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190123d14h10m24s169560usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=885314
-expid=569938899 -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/885314/
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 569938899.85684 or about 2019:023:12:21:34 UT
Found 1307 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 20% of the srclist region. Found 150 sources in
srclist catalog. Found 16 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.12 mag.
Found 29 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 233 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
22% of the Genie image region.
Genie image analysis:
Found 50399.3 counts in the large background region of 5528.0 pixels or a rate
of 9.117 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 19.95 mag. for a
4-arcsec aperture.
Found 1890.7 counts in the XRT position region of 198.0 pixels or a rate of
9.549 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.993 +/- 0.378 (1-sigma) cps or
19.79 mag and a range from 19.44 to 20.31 mag. The 3-sigma UL at the XRT
position is 2.127 cps or 18.96 mag. The closest srclist source has ra= 53.2263
dec= 45.5245 mag=19.31 sep=14.67". The closest Genie source has ra= 53.2262
dec= 45.5248 mag=18.23 sep=14.39".
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?
569938899 123 WHITE srclist found no candidates.
569938899 123 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 45.52531
GRB_ERROR: 5.75
GRB_RA: 53.22058
IMAGE_START_TIME: 12:21:34
MAGNITUDE: 19.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT