image overlap message for exposure 2 of trigger 841548
uvot_overlap.pl vrs. 2010-12-20b fem started at 180615d03h11m28s048306usUT
The observation of trigger 841548 started 2018-06-14T19:21:16.5
Examining file ./841548_g302_uvot_sky_image.fits
The exposure ID is 550696876
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (3.1634,46.9450) with a roll angle of 80.4
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 (3.1570,46.9430) with a radius of 3.000 arc min
This is 0.288 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 (3.0785,46.9530) with a radius of 0.030 arc min
This is 3.512 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 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 841548
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180615d03h11m56s473563usUT
Observation start time is 2018-06-14T19:21:16.5
Examining file ./841548_g302_uvot_catalog_image.fits
The exposure ID is 550696876
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 8 detected source(s) for 841548_g302
Aspect correction adds 0.00202 degrees (0.484 sec of time = 4.96 arc sec) to RA
Aspect correction adds -0.00060 degrees (-2.17 arcsec) to Dec
Total aspect correction is 5.41 arcsec
Star catalogs centered at 3.1703 , 46.9442 with radius 2.45 arc min.
n_usno: 106 n_gsc: 100
*** WARNING -- XRT position is outside star catalog search region.
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 9 matched entries is 0.657" for 841548_g302
Mean and std. dev of mag. difference (MAG_DELTA) are 1.363 and 0.580 for 841548_g302
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 841548_g302.
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= 3.1570 (00:12:37.68) DEC=46.9430 (+46:56:34.8)
XRT distances are from RA= 3.0785 (00:12:18.83) DEC=46.9530 (+46:57:10.8)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 16469.635 counts in the bkg source region of 6037.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.728 counts/pixel (5-sig UL in 4" is 19.92 mag) for 841548_g302
Do not compute counts in XRT region because position is too far from center.
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 20.47, 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: 841548_550696876_180615d03h11m56s473563usUT_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(3.1634,46.9450,45")
fk5;-circle(3.15716061689209,46.9509405949449,6")
fk5;-circle(3.17704479327579,46.9404127870497,6")
fk5;-circle(3.181657354752,46.9434279259038,6")
image paragraph message for exposure 2 of trigger 841548
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no overlap
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB180614 (Swift/BAT trigger 841548) at 19:16:13 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
281 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 18.0 mag. No correction has been made for the expected extinction
corresponding to E(B-V) of 0.14.
------- notes for trigger 841548 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180615d03h11m58s924637usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=841548
-expid=550696876 -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/841548/
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 550696876.4879 or about 2018:165:19:21:11 UT
Found 1686 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 15% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 57 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 8 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 20.47 mag. Found 102 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 11% of the
Genie image region. The XRT position was OUTSIDE the star catalog search
region.
Genie image analysis:
Found 16469.6 counts in the large background region of 6037.0 pixels or a rate
of 2.728 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 19.96 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.83 mag. The closest srclist
source has ra= 3.0795 dec= 46.9581 mag=17.07 sep=18.35". The closest Genie
source has ra= 3.1468 dec= 46.9623 mag=17.41 sep=171.26".
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?
550696876 281 U srclist found no candidates.
550696876 281 U image found no candidates.
List afterglow candidates for other finding charts.
550696663 68 ? srclist data are not available.
550696663 68 WHITE image found no candidates.
550697455 860 WHITE srclist found no candidates.
550697455 860 WHITE image found no candidates.
------- Tokens for Quick GCN -------