image overlap message for exposure 1 of trigger 954840
uvot_overlap.pl vrs. 2010-12-20b fem started at 200207d03h35m03s968417usUT
The observation of trigger 954840 started 2020-02-07T03:29:50.9
Examining file 954840_g1651_uvot_sky_image.fits
The exposure ID is 602738990
The exposure time is 149.857 (seconds)
The filter is WHITE.
*** Warning -- found 21567 null pixels in the image.
The uvot region is centered at (163.6286,-49.5853) with a roll angle of 155.7
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 (163.6230,-49.5810) with a radius of 3.000 arc min
This is 0.338 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 2.20 sq. arc min or 0.08 of the BAT error circle
Could not find the location of an XRT error circle
image afterglow message for exposure 1 of trigger 954840
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200207d03h35m05s142345usUT
Observation start time is 2020-02-07T03:29:50.9
Examining file 954840_g1651_uvot_catalog_image.fits
The exposure ID is 602738990
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 3 detected source(s) for 954840_g1651
Aspect correction adds 0.00039 degrees (0.093 sec of time = 0.91 arc sec) to RA
Aspect correction adds -0.00069 degrees (-2.50 arcsec) to Dec
Total aspect correction is 2.66 arcsec
Star catalogs centered at 163.6335 , -49.5869 with radius 2.33 arc min.
n_usno: 195 n_gsc: 0
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 0.513" for 954840_g1651
Mean and std. dev of mag. difference (MAG_DELTA) are 0.440 and 0.046 for 954840_g1651
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 954840_g1651.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", 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=163.6230 (10:54:29.52) DEC=-49.5810 (-49:34:51.6)
XRT distances are as reported in catalog file.
There are 0.0000000 counts in the bkg source region of 0.0000000 pixels.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.86, 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: 954840_602738990_200207d03h35m05s142345usUT_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(163.6286,-49.5853,45")
image paragraph message for exposure 1 of trigger 954840
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB200207 (Swift/BAT trigger 954840) at 03:02:18 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 1628 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 8%
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 0.38.
------- notes for trigger 954840 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200207d03h35m06s358023usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=954840
-expid=602738990 -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/954840/
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 602738990.88424 or about 2020:038:03:29:45 UT
Found 1516 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 24% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 17 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.66 mag.
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 18.86 mag. Found 191 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 24% of the
Genie image region. The Genie image is INCOMPLETE with 21567 null pixels.
Found no Genie image background information. The number of srclist sources
filled the available telemetry. The weakest source detected was 19.51 mag.
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?
602738990 1627 WHITE srclist found no candidates.
602738990 1627 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------