image overlap message for exposure 2 of trigger 959917
uvot_overlap.pl vrs. 2010-12-20b fem started at 200307d00h40m34s403294usUT
The observation of trigger 959917 started 2020-03-06T00:25:02.0
Examining file ./959917_g605147101_uvot_sky_image.fits
The exposure ID is 605147101
The exposure time is 157.452 (seconds)
The filter is U.
*** Warning -- found 23784 null pixels in the image.
The uvot region is centered at (101.0970,-62.0089) with a roll angle of 246.0
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 (101.1030,-62.0050) with a radius of 3.000 arc min
This is 0.290 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 1.62 sq. arc min or 0.06 of the BAT error circle
The XRT error circle is centered at (101.1023,-62.0065) with a radius of 0.025 arc min
This is 0.208 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 959917
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200307d00h40m45s686423usUT
Observation start time is 2020-03-06T00:25:02.0
Examining file ./959917_g605147101_uvot_sources_image.fits
The exposure ID is 605147101
The exposure is 157.452 sec.
The bin size is 2 pixels
The filter is U
There are 0 detected source(s) for 959917_g605147101
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 101.1433 , -62.0061 with radius 2.00 arc min.
n_usno: 76 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 959917_g605147101.
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=101.1030 (06:44:24.72) DEC=-62.0050 (-62:00:18.0)
XRT distances are from RA=101.1023 (06:44:24.56) DEC=-62.0065 (-62:00:23.5)
Found 3 entries in star catalog(s) within 20" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
101.1080 -62.0045 12.1 -1 USNO-B1 19.06 18.10 18.53
101.1074 -62.0045 11.3 -1 USNO-B1 22.13 18.31 20.01
101.0962 -62.0099 15.8 -1 USNO-B1 21.67 20.98 21.29
The closest star is 11.27" away.
List UVOT sources within 20" of the XRT position:
There are 0.0000000 counts in the bkg source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt_bkg source region of 0.0000000 pixels.
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 18.07, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Results are questionable because aspect solution FAILED.
Region file: 959917_605147101_200307d00h40m45s686423usUT_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(101.0970,-62.0089,45")
Region file: 959917_605147101_200307d00h40m45s686423usUT_xrt.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(101.10233,-62.00653,8")
Region file: 959917_605147101_200307d00h40m45s686423usUT_xrt_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(101.10233,-62.00653,25")
fk5;-circle(101.10233,-62.00653,15")
image paragraph message for exposure 2 of trigger 959917
IMAGE PROBLEM: incomplete image, no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB200306 (Swift/BAT trigger 959917) at 00:19:40.2 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 157 seconds with the U filter starting
297 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 18.0 mag. No correction has been made for the expected extinction
corresponding to E(B-V) of 0.10.
------- notes for trigger 959917 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200307d00h40m49s444262usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=959917
-expid=605147101 -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/959917/
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 605147101.99296 or about 2020:066:00:24:56 UT
Found 761 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 13% of the srclist region. Found 46 sources in
srclist catalog. Found 3 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
17.87 mag.
Found 0 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 18.07 mag. Found 72 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 12% of the
Genie image region. The Genie image is INCOMPLETE with 23784 null pixels.
Found no Genie image background information. The closest srclist source has ra=
101.1411 dec= -62.0073 mag=18.07 sep=65.58".
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?
605147101 296 U srclist found no candidates.
605147101 296 U image found no candidates.
List afterglow candidates for other finding charts.
605146889 84 WHITE srclist found no candidates.
605146889 84 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: u
GRB_DEC: -62.00653
GRB_ERROR: 5
GRB_RA: 101.10233
IMAGE_START_TIME: 00:24:56
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT