image overlap message for exposure 1 of trigger 906654
uvot_overlap.pl vrs. 2010-12-20b fem started at 190604d18h46m00s811295usUT
The observation of trigger 906654 started 2019-06-04T14:59:45.1
Examining file ./906654_g149_uvot_sky_image.fits
The exposure ID is 581353185
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (297.5449,-32.9791) with a roll angle of 92.9
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 (297.5870,-32.9320) with a radius of 3.000 arc min
This is 3.532 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 1.87 sq. arc min or 0.07 of the BAT error circle
The XRT error circle is centered at (297.5406,-32.9780) with a radius of 0.032 arc min
This is 0.228 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
image afterglow message for exposure 1 of trigger 906654
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190604d18h46m07s581909usUT
Observation start time is 2019-06-04T14:59:45.1
Examining file ./906654_g149_uvot_catalog_image.fits
The exposure ID is 581353185
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 12 detected source(s) for 906654_g149
Aspect correction adds 0.00218 degrees (0.524 sec of time = 6.60 arc sec) to RA
Aspect correction adds -0.00157 degrees (-5.65 arcsec) to Dec
Total aspect correction is 8.68 arcsec
Star catalogs centered at 297.5439 , -32.9752 with radius 2.45 arc min.
n_usno: 145 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.03604
RA DEC Mag Color
bright star 0: 297.51590 (19:50:03.82) -32.97606 (-32:58:33.8) 11.04 USNO-V
Mean distance difference (CAT_DELTA) for 14 matched entries is 0.522" for 906654_g149
Mean and std. dev of mag. difference (MAG_DELTA) are 0.456 and 0.462 for 906654_g149
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 906654_g149.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=297.5870 (19:50:20.88) DEC=-32.9320 (-32:55:55.2)
XRT distances are from RA=297.5406 (19:50:09.74) DEC=-32.9780 (-32:58:40.9)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 44904.609 counts in the bkg source region of 5302.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 8.469 counts/pixel (5-sig UL in 4" is 20.19 mag) for 906654_g149
There are 2443.2068 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 12.339 counts/pixel for 906654_g149
There are 9005.5918 counts in the xrt_bkg source region of 995.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 9.051 counts/pixel (5-sig UL in 4" is 20.15 mag) for 906654_g149
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 20.74, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 906654_581353185_190604d18h46m07s581909usUT_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(297.5449,-32.9791,45")
fk5;-circle(297.533507421993,-32.977592615769,6")
fk5;-circle(297.531679002685,-32.9733915467868,6")
fk5;-circle(297.54267388619,-32.9812152383791,6")
fk5;-circle(297.545851470668,-32.9757766274445,6")
fk5;-circle(297.545626055831,-32.9840466439365,6")
fk5;-circle(297.544134518725,-32.9688949606809,6")
fk5;-circle(297.551400129262,-32.9736610544092,6")
fk5;-circle(297.5555927097,-32.9825159992252,6")
fk5;-circle(297.555720103078,-32.9723081648502,6")
fk5;-circle(297.557307541181,-32.9842279309295,6")
fk5;-circle(297.559049360179,-32.97247031683,6")
Region file: 906654_581353185_190604d18h46m07s581909usUT_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(297.54058,-32.97803,8")
Region file: 906654_581353185_190604d18h46m07s581909usUT_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(297.54058,-32.97803,25")
fk5;-circle(297.54058,-32.97803,15")
fk5;-circle(297.533507421993,-32.977592615769,6")
fk5;-circle(297.54267388619,-32.9812152383791,6")
fk5;-circle(297.545851470668,-32.9757766274445,6")
fk5;-circle(297.545626055831,-32.9840466439365,6")
image paragraph message for exposure 1 of trigger 906654
------ Start for Possible Stand-alone Circular ----
In response to GRB190604 (Swift/BAT trigger 906654) at 14:57:15 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 126 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
0.15.
------- notes for trigger 906654 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190604d18h46m11s687225usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=906654
-expid=581353185 -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/906654/
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.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 581353185.08046 or about 2019:155:14:59:40 UT
Found 1318 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 19% of the srclist region. Found 110 sources in
srclist catalog. Found 3 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 12 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 20.74 mag. Found 141 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
16% of the Genie image region.
Genie image analysis:
Found 44904.6 counts in the large background region of 5302.0 pixels or a rate
of 8.469 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 20.19 mag. for a
4-arcsec aperture.
Found 2443.2 counts in the XRT position region of 198.0 pixels or a rate of
12.339 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 4.341 +/- 0.353 (1-sigma) cps or
18.19 mag and a range from 18.10 to 18.28 mag. The 3-sigma UL at the XRT
position is 5.399 cps or 17.95 mag. The closest srclist source has ra= 297.5423
dec= -32.9812 mag=18.12 sep=12.42". The closest Genie source has ra= 297.5427
dec= -32.9812 mag=17.01 sep=13.09".
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?
581353185 126 WHITE srclist found no candidates.
581353185 126 WHITE image found no candidates.
List afterglow candidates for other finding charts.
581353397 338 U srclist found no candidates.
581353397 338 U image found no candidates.
581353928 869 WHITE srclist found no candidates.
581353928 869 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -32.97803
GRB_ERROR: 5
GRB_RA: 297.54058
IMAGE_START_TIME: 14:59:40
MAGNITUDE: 17.9
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT