image overlap message for exposure 1 of trigger 817345
uvot_overlap.pl vrs. 2010-12-20b fem started at 180324d09h19m53s672885usUT
The observation of trigger 817345 started 2018-03-24T04:38:42.0
Examining file ./817345_g91_uvot_sky_image.fits
The exposure ID is 543559121
The exposure time is 149.879 (seconds)
The filter is WHITE.
*** Warning -- found 13513 null pixels in the image.
The uvot region is centered at (76.5799,56.7233) with a roll angle of 256.7
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 (76.5850,56.7250) with a radius of 3.000 arc min
This is 0.198 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 at most 7.03 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (76.5265,56.7143) with a radius of 0.028 arc min
This is 1.837 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 1 of trigger 817345
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180324d09h19m56s412906usUT
Observation start time is 2018-03-24T04:38:42.0
Examining file ./817345_g91_uvot_catalog_image.fits
The exposure ID is 543559121
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 2 detected source(s) for 817345_g91
Aspect correction adds -0.00144 degrees (-0.345 sec of time = -2.84 arc sec) to RA
Aspect correction adds 0.00120 degrees ( 4.31 arcsec) to Dec
Total aspect correction is 5.16 arcsec
Star catalogs centered at 76.5732 , 56.7197 with radius 2.32 arc min.
n_usno: 74 n_gsc: 87
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 2 matched entries is 0.259" for 817345_g91
Mean and std. dev of mag. difference (MAG_DELTA) are 1.139 and 0.160 for 817345_g91
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 817345_g91.
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=76.5850 (05:06:20.40) DEC=56.7250 (+56:43:30.0)
XRT distances are from RA=76.5265 (05:06:06.37) DEC=56.7143 (+56:42:51.5)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 73942.438 counts in the bkg source region of 2706.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 27.325 counts/pixel (5-sig UL in 4" is 19.55 mag) for 817345_g91
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 20.11, 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: 817345_543559121_180324d09h19m56s412906usUT_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(76.5799,56.7233,45")
fk5;-circle(76.6005264417492,56.7186464412264,6")
image paragraph message for exposure 1 of trigger 817345
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB180324 (Swift/BAT trigger 817345) at 04:37:09 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 71 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 mag. No correction has been made for the expected
extinction corresponding to E(B-V) of 0.90.
------- notes for trigger 817345 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180324d09h19m59s578242usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=817345
-expid=543559121 -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/817345/
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 543559121.99556 or about 2018:083:04:38:36 UT
Found 578 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 11% of the srclist region. Found 35 sources in
srclist catalog. Found 1 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 2 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 20.11 mag. Found 84 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 10% of the
Genie image region. The Genie image is INCOMPLETE with 13513 null pixels.
Genie image analysis:
Found 73942.4 counts in the large background region of 2706.0 pixels or a rate
of 27.325 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 19.55 mag. for a
4-arcsec aperture. The closest srclist source has ra= 76.5102 dec= 56.7248
mag=18.84 sep=49.63". The closest Genie source has ra= 76.5375 dec= 56.7098
mag=19.40 sep=27.06".
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?
543559121 70 WHITE srclist found no candidates.
543559121 70 WHITE image found no candidates.
List afterglow candidates for other finding charts.
543559334 283 U srclist found no candidates.
543559334 283 U image found no candidates.
543559913 862 WHITE srclist found no candidates.
543559913 862 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 56.71431
GRB_ERROR: 5
GRB_RA: 76.52654
IMAGE_START_TIME: 04:38:36
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT