image overlap message for exposure 2 of trigger 1000613
uvot_overlap.pl vrs. 2010-12-20b fem started at 201017d14h14m05s296280usUT
The observation of trigger 1000613 started 2020-10-17T09:51:21.4
Examining file ./1000613_g289_uvot_sky_image.fits
The exposure ID is 624621081
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (36.6327,66.6779) with a roll angle of 16.3
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 (36.6330,66.6730) with a radius of 3.000 arc min
This is 0.294 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 (36.6201,66.6788) with a radius of 0.043 arc min
This is 0.304 arc min from the center of the uvot region
The area of the XRT error circle is 0.006 sq. arc min
The UVOT/XRT overlap is 0.006 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1000613
find_uvot_ag.pl vrs. 2017-02-17 fem started at 201017d14h14m17s549477usUT
Observation start time is 2020-10-17T09:51:21.4
Examining file ./1000613_g289_uvot_catalog_image.fits
The exposure ID is 624621081
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 4 detected source(s) for 1000613_g289
Aspect correction adds 0.00089 degrees (0.213 sec of time = 1.26 arc sec) to RA
Aspect correction adds 0.00136 degrees ( 4.89 arcsec) to Dec
Total aspect correction is 5.05 arcsec
Star catalogs centered at 36.6370 , 66.6731 with radius 2.55 arc min.
n_usno: 171 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 4 matched entries is 0.698" for 1000613_g289
Mean and std. dev of mag. difference (MAG_DELTA) are 2.107 and 0.517 for 1000613_g289
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1000613_g289.
Acceptable entries have no ID, XRT distances < 6.5", 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=36.6330 (02:26:31.92) DEC=66.6730 (+66:40:22.8)
XRT distances are from RA=36.6201 (02:26:28.82) DEC=66.6788 (+66:40:43.6)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 13391.760 counts in the bkg source region of 6312.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.122 counts/pixel (5-sig UL in 4" is 20.06 mag) for 1000613_g289
There are 448.36237 counts in the xrt source region of 199.00000 pixels.
Rate in xrt region with 8 arcsec radius is 2.253 counts/pixel for 1000613_g289
There are 2591.6594 counts in the xrt_bkg source region of 1249.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 2.075 counts/pixel (5-sig UL in 4" is 20.07 mag) for 1000613_g289
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 20.61, XRT distances < 6.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1000613_624621081_201017d14h14m17s549477usUT_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(36.6327,66.6779,45")
Region file: 1000613_624621081_201017d14h14m17s549477usUT_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(36.62008,66.67878,8")
Region file: 1000613_624621081_201017d14h14m17s549477usUT_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(36.62008,66.67878,25")
fk5;-circle(36.62008,66.67878,15")
image paragraph message for exposure 2 of trigger 1000613
------ Start for Possible Stand-alone Circular ----
In response to GRB201017 (Swift/BAT trigger 1000613) at 09:46:31 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
264 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
1.20.
------- notes for trigger 1000613 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 201017d14h14m21s618094usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1000613
-expid=624621081 -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/1000613/
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 624621081.39918 or about 2020:291:09:51:16 UT
Found 2059 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 20% of the srclist region. Found 93 sources in
srclist catalog. Found 59 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
Found 4 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 20.61 mag. Found 167 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 17% of the
Genie image region.
Genie image analysis:
Found 13391.8 counts in the large background region of 6312.0 pixels or a rate
of 2.122 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 20.10 mag. for a
4-arcsec aperture.
Found 448.4 counts in the XRT position region of 199.0 pixels or a rate of
2.253 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.142 +/- 0.091 (1-sigma) cps or
20.50 mag and a range from 19.96 to 21.61 mag. The 3-sigma UL at the XRT
position is 0.414 cps or 19.34 mag. The closest srclist source has ra= 36.5698
dec= 66.6687 mag=18.26 sep=80.41". The closest Genie source has ra= 36.6341
dec= 66.6929 mag=18.93 sep=54.44".
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?
624621081 263 U srclist found no candidates.
624621081 263 U image found no candidates.
List afterglow candidates for other finding charts.
624620923 105 WHITE srclist found no candidates.
624620923 105 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 66.67878
GRB_ERROR: 6.5
GRB_RA: 36.62008
IMAGE_START_TIME: 09:51:16
MAGNITUDE: 19.3
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT