image overlap message for exposure 2 of trigger 952164
uvot_overlap.pl vrs. 2010-12-20b fem started at 200125d14h54m45s798741usUT
The observation of trigger 952164 started 2020-01-25T11:37:40.8
Examining file ./952164_g360_uvot_sky_image.fits
The exposure ID is 601645060
The exposure time is 76.684 (seconds)
The filter is U.
The uvot region is centered at (228.0505,-8.1496) with a roll angle of 107.8
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 (228.0470,-8.1480) with a radius of 3.000 arc min
This is 0.230 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 (228.0480,-8.1445) with a radius of 0.042 arc min
This is 0.338 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 0.005 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 952164
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200125d14h54m55s125817usUT
Observation start time is 2020-01-25T11:37:40.8
Examining file ./952164_g360_uvot_sources_image.fits
The exposure ID is 601645060
The exposure is 76.684 sec.
The bin size is 2 pixels
The filter is U
There are 0 detected source(s) for 952164_g360
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 228.0762 , -8.1526 with radius 2.00 arc min.
n_usno: 58 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 952164_g360.
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.
Magnitude criteria will be applied later.
BAT distances are from RA=228.0470 (15:12:11.28) DEC=-8.1480 (-08:08:52.8)
XRT distances are from RA=228.0480 (15:12:11.52) DEC=-8.1445 (-08:08:40.3)
Found 0 entries in star catalog(s) within 20" of the XRT position.
List UVOT sources within 20" of the XRT position:
There are 33640.766 counts in the bkg source region of 6321.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 5.322 counts/pixel (5-sig UL in 4" is 18.27 mag) for 952164_g360
There are 1087.1060 counts in the xrt source region of 205.00000 pixels.
Rate in xrt region with 8 arcsec radius is 5.303 counts/pixel for 952164_g360
There are 6632.6230 counts in the xrt_bkg source region of 1251.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 5.302 counts/pixel (5-sig UL in 4" is 18.28 mag) for 952164_g360
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 18.83, XRT distances < 6.25",
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: 952164_601645060_200125d14h54m55s125817usUT_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(228.0505,-8.1496,45")
Region file: 952164_601645060_200125d14h54m55s125817usUT_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(228.04800,-8.14453,8")
Region file: 952164_601645060_200125d14h54m55s125817usUT_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(228.04800,-8.14453,25")
fk5;-circle(228.04800,-8.14453,15")
image paragraph message for exposure 2 of trigger 952164
------ Start for Possible Stand-alone Circular ----
In response to GRB200125 (Swift/BAT trigger 952164) at 11:31:39 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 77 seconds with the U filter starting
337 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 19.2 mag. 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
0.08.
------- notes for trigger 952164 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200125d14h54m58s141583usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=952164
-expid=601645060 -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/952164/
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 601645060.80022 or about 2020:025:11:37:35 UT
Found 1137 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 12% of the srclist region. Found 26 sources in
srclist catalog. Found 1 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
17.48 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 18.83 mag. Found 54 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 9% of the
Genie image region.
Genie image analysis:
Found 33640.8 counts in the large background region of 6321.0 pixels or a rate
of 5.322 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 18.32 mag. for a
4-arcsec aperture.
Found 1087.1 counts in the XRT position region of 205.0 pixels or a rate of
5.303 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.003 +/- 0.462 (1-sigma) cps or
24.72 mag and a range from 19.21 to 99.99 mag. The 3-sigma UL at the XRT
position is 1.389 cps or 18.02 mag. The closest srclist source has ra= 228.0684
dec= -8.1699 mag=18.02 sep=116.54".
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?
601645060 336 U srclist found no candidates.
601645060 336 U image found no candidates.
List afterglow candidates for other finding charts.
601644902 178 WHITE srclist found no candidates.
601644902 178 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -8.14453
GRB_ERROR: 6.25
GRB_RA: 228.04800
IMAGE_START_TIME: 11:37:35
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT