image overlap message for exposure 1 of trigger 020118
uvot_overlap.pl vrs. 2009-10-28 fem started at 091029d15h40m13s551996usUT
The observation of trigger 020118 started 2009-10-29T15:34:17.8
Examining file 20118_o278523257_uvot_sky_image.fits
The exposure ID is 278523257
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (140.2700,44.7038) with a roll angle of 111.0
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 (140.2670,44.7070) with a radius of 4.000 arc min
This is 0.228 arc min from the center of the uvot region
The area of the BAT error circle is 50.27 sq. arc min
The uvot/BAT overlap is 7.17 sq. arc min or 0.14 of the BAT error circle
Could not find the location of an XRT error circle
image afterglow message for exposure 1 of trigger 020118
find_uvot_ag.pl vrs. 2009-07-21 fem started at 091029d15h40m14s916202usUT
Observation start time is 2009-10-29T15:34:17.8
Examining file 20118_g376_uvot_catalog_image.fits
The exposure ID is 278523257
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 3 detected source(s) for 020118
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.49994
RA DEC Mag Color
bright star 0: 140.22086 (09:20:53.01) 44.69104 (+44:41:27.7) 10.50 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 3 matched entries is 0.331" for 020118
Mean and std. dev of mag. difference (MAG_DELTA) are 0.085 and 0.999 for 020118
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 020118.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", and are > ~(80 - 10*(mag-6))" from any bright star.
Magnitude criteria will be applied later.
BAT distances are from RA=140.2670 (09:21:04.08) DEC=44.7070 (+44:42:25.2)
XRT distances are as reported in catalog file.
There are 56508.359 counts in the bkg source region of 6192.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 9.126 counts/pixel (5-sig UL in 4" is 20.15 mag) for 020118
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.14, BAT distances < 200",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 020118_278523257_091029d15h40m14s916202usUT_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(140.2700,44.7038,45")
fk5;-circle(140.266550557896,44.7011131727445,6")
image paragraph message for exposure 1 of trigger 020118
SRCLIST PROBLEM: srclist filled telemetry buffer
1 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB091029 (Swift/BAT trigger 020118) at 15:28:00 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 855 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 coverage of the XRT error circle by the 8'x8' region for the list of
sources generated on-board is uncertain because the large number of sources
filled the available telemetry. No correction has been made for the expected
extinction corresponding to E(B-V) of 0.02.
------- notes for trigger 020118 ------
uvot_gcn_auto.pl vrs. 2009-06-29 fem at 091029d15h48m50s979607usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=020118
-expid=278523740 -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/020118/
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 278523740.82668 or about 2009:302:15:42:18 UT
Found 491 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 128 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 3 source(s) in Genie image catalog. 1 source(s) are within 10" of the xrt
position. 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
20.70 mag. Found 37 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 6% of the Genie image region.
Genie image analysis:
Found 56660.9 counts in the large background region of 6195.0 pixels or a rate
of 9.146 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 20.15 mag. for a
4-arcsec aperture.
Found 2471.5 counts in the XRT position region of 199.0 pixels or a rate of
12.420 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is 4.343 +/- 0.335 (1-sigma) cps or
18.19 mag and a range from 18.10 to 18.27 mag. The 3-sigma UL at the XRT
position is 5.349 cps or 17.96 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 20.10 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 140.2438 dec= 44.6984 mag=18.49 sep=7.71".
The closest srclist source has ra= 140.2438 dec= 44.6984 mag=18.49 sep=7.71".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 140.2435 dec= 44.6984 mag=17.98 sep=7.46". The closest Genie
source has ra= 140.2435 dec= 44.6984 mag=17.98 sep=7.46".
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?
278523740 854 WHITE srclist found no candidates.
278523740 854 WHITE image found no candidates.
List afterglow candidates for other finding charts.
278523257 371 WHITE srclist found no candidates.
278523257 371 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 44.70020
GRB_ERROR: 10
GRB_RA: 140.24210
IMAGE_START_TIME: 15:42:18
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT