image overlap message for exposure 1 of trigger 851829
uvot_overlap.pl vrs. 2010-12-20b fem started at 180805d12h11m10s683590usUT
The observation of trigger 851829 started 2018-08-05T09:06:40.0
Examining file ./851829_g110_uvot_sky_image.fits
The exposure ID is 555152800
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (167.5269,-45.3294) with a roll angle of 326.9
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 (167.5300,-45.3310) with a radius of 3.000 arc min
This is 0.160 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 (167.5662,-45.3322) with a radius of 0.042 arc min
This is 1.667 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 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 851829
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180805d12h11m14s164735usUT
Observation start time is 2018-08-05T09:06:40.0
Examining file ./851829_g110_uvot_catalog_image.fits
The exposure ID is 555152800
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 18 detected source(s) for 851829_g110
Aspect correction adds 0.00029 degrees (0.071 sec of time = 0.75 arc sec) to RA
Aspect correction adds 0.00006 degrees ( 0.23 arcsec) to Dec
Total aspect correction is 0.78 arcsec
Star catalogs centered at 167.5288 , -45.3308 with radius 2.57 arc min.
n_usno: 155 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.76074
RA DEC Mag Color
bright star 0: 167.55999 (11:10:14.40) -45.36704 (-45:22:01.4) 10.76 USNO-V
Mean distance difference (CAT_DELTA) for 18 matched entries is 0.368" for 851829_g110
Mean and std. dev of mag. difference (MAG_DELTA) are 1.061 and 0.272 for 851829_g110
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 851829_g110.
Acceptable entries have no ID, XRT distances < 6.25", 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=167.5300 (11:10:07.20) DEC=-45.3310 (-45:19:51.6)
XRT distances are from RA=167.5662 (11:10:15.90) DEC=-45.3322 (-45:19:56.0)
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
167.5655 -45.3321 2.0 -1 USNO-B1 21.21 20.73 20.94
167.5694 -45.3317 8.2 -1 USNO-B1 20.72 19.11 19.82
The closest star is 1.96" away.
List UVOT sources within 10" of the XRT position:
There are 1.2114570E+05 counts in the bkg source region of 5881.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 20.600 counts/pixel (5-sig UL in 4" is 19.71 mag) for 851829_g110
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 20.26, XRT distances < 6.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 851829_555152800_180805d12h11m14s164735usUT_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(167.5269,-45.3294,45")
fk5;-circle(167.520562092723,-45.3243508014699,6")
fk5;-circle(167.525693134433,-45.3218420313404,6")
fk5;-circle(167.518432607974,-45.3253385152684,6")
fk5;-circle(167.515360596934,-45.3325031628582,6")
fk5;-circle(167.545378793875,-45.3328412771888,6")
fk5;-circle(167.540713485577,-45.3195687054744,6")
image paragraph message for exposure 1 of trigger 851829
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB180805 (Swift/BAT trigger 851829) at 09:04:49 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 89 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 0.19.
------- notes for trigger 851829 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180805d12h11m16s807316usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=851829
-expid=555152800 -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/851829/
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 555152800.03892 or about 2018:217:09:06:35 UT
Found 900 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 18% of the srclist region. Found 116 sources in
srclist catalog. Found 7 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 18 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 20.26 mag. Found 151 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
15% of the Genie image region.
Genie image analysis:
Found 121145.7 counts in the large background region of 5881.0 pixels or a rate
of 20.600 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 19.71 mag. for a
4-arcsec aperture. The closest srclist source has ra= 167.5755 dec= -45.3256
mag=18.50 sep=33.42". The closest Genie source has ra= 167.5582 dec= -45.3322
mag=19.61 sep=20.35".
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?
555152800 89 WHITE srclist found no candidates.
555152800 89 WHITE image found no candidates.
List afterglow candidates for other finding charts.
555153012 301 U srclist found no candidates.
555153012 301 U image found no candidates.
555153590 879 WHITE srclist found no candidates.
555153590 879 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -45.33222
GRB_ERROR: 6.25
GRB_RA: 167.56625
IMAGE_START_TIME: 09:06:35
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT