image overlap message for exposure 1 of trigger 020135
uvot_overlap.pl vrs. 2009-10-28 fem started at 100414d18h45m28s951795usUT
The observation of trigger 020135 started 2010-04-14T18:39:52.4
Examining file 20135_o292963192_uvot_sky_image.fits
The exposure ID is 292963192
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (191.5858,8.5726) with a roll angle of 327.9
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 (191.5900,8.5700) with a radius of 3.000 arc min
This is 0.292 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
Could not find the location of an XRT error circle
image afterglow message for exposure 1 of trigger 020135
find_uvot_ag.pl vrs. 2009-07-21 fem started at 100414d18h45m32s997918usUT
Observation start time is 2010-04-14T18:39:52.4
Examining file 20135_g58769_uvot_catalog_image.fits
The exposure ID is 292963192
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 3 detected source(s) for 020135
*** WARNING -- access to gsc2.2 catalog failed.
Bright star catalog has no entries brighter than 12 mag
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 3 matched entries is 0.245" for 020135
Mean and std. dev of mag. difference (MAG_DELTA) are 1.092 and 0.004 for 020135
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 020135.
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=191.5900 (12:46:21.60) DEC= 8.5700 (+08:34:12.0)
XRT distances are as reported in catalog file.
There are 63660.031 counts in the bkg source region of 6100.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 10.436 counts/pixel (5-sig UL in 4" is 20.08 mag) for 020135
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.07, 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: 020135_292963192_100414d18h45m32s997918usUT_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(191.5858,8.5726,45")
fk5;-circle(191.583993620206,8.57447983629916,6")
fk5;-circle(191.580882472632,8.57289194986117,6")
image paragraph message for exposure 1 of trigger 020135
IMAGE PROBLEM: partial overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB100414 (Swift/BAT trigger 020135) at 02:20:22 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 58764 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 25%
of the BAT 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 BAT 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 0.02.
------- notes for trigger 020135 ------
uvot_gcn_auto.pl vrs. 2010-03-17 fem at 100414d18h46m11s690034usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=020135
-expid=292963192 -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/020135/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
No XRT position found for srclist. No XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 292963192.37452 or about 2010:104:18:39:50 UT
Found 181 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 23 sources in
srclist catalog. Found 0 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.66 mag.
Access to GSC star catalog FAILED. This increases the odds of a FALSE afterglow
detection. Found 3 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 20.07 mag. Found 15 stars in
largest star catalog for Genie image region. The stars will eliminate
afterglows from about 2% of the Genie image region.
Genie image analysis:
Found 63660.0 counts in the large background region of 6100.0 pixels or a rate
of 10.436 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 20.08 mag. for a
4-arcsec aperture.
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?
292963192 58764 WHITE srclist found no candidates.
292963192 58764 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 8.57000
GRB_ERROR: 200
GRB_RA: 191.59000
IMAGE_START_TIME: 18:39:50
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: BAT