image overlap message for exposure 2 of trigger 963260
uvot_overlap.pl vrs. 2010-12-20b fem started at 200324d19h16m32s885086usUT
The observation of trigger 963260 started 2020-03-24T16:45:26.0
Examining file ./963260_g377_uvot_sky_image.fits
The exposure ID is 606761125
The exposure time is 249.946 (seconds)
The filter is U.
The uvot region is centered at (222.6753,35.9448) with a roll angle of 52.2
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 (222.6850,35.9680) with a radius of 3.000 arc min
This is 1.470 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 7.06 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (222.6738,35.9417) with a radius of 0.028 arc min
This is 0.199 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 963260
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200324d19h16m44s012129usUT
Observation start time is 2020-03-24T16:45:26.0
Examining file ./963260_g377_uvot_catalog_image.fits
The exposure ID is 606761125
The exposure is 249.946 sec.
The bin size is 2 pixels
The filter is U
There are 4 detected source(s) for 963260_g377
Aspect correction adds 0.00146 degrees (0.350 sec of time = 4.25 arc sec) to RA
Aspect correction adds 0.00138 degrees ( 4.98 arcsec) to Dec
Total aspect correction is 6.55 arcsec
Star catalogs centered at 222.6685 , 35.9411 with radius 2.27 arc min.
n_usno: 37 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 4 matched entries is 0.303" for 963260_g377
Mean and std. dev of mag. difference (MAG_DELTA) are 0.348 and 0.714 for 963260_g377
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 963260_g377.
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=222.6850 (14:50:44.40) DEC=35.9680 (+35:58:04.8)
XRT distances are from RA=222.6738 (14:50:41.70) DEC=35.9417 (+35:56:30.2)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 9933.7549 counts in the bkg source region of 6203.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 1.601 counts/pixel (5-sig UL in 4" is 20.21 mag) for 963260_g377
There are 283.66214 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 1.433 counts/pixel for 963260_g377
There are 1985.9915 counts in the xrt_bkg source region of 1245.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 1.595 counts/pixel (5-sig UL in 4" is 20.21 mag) for 963260_g377
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 20.76, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 963260_606761125_200324d19h16m44s012129usUT_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(222.6753,35.9448,45")
fk5;-circle(222.667600409233,35.9536765721129,6")
fk5;-circle(222.66123120167,35.9530104907607,6")
Region file: 963260_606761125_200324d19h16m44s012129usUT_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(222.67375,35.94172,8")
Region file: 963260_606761125_200324d19h16m44s012129usUT_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(222.67375,35.94172,25")
fk5;-circle(222.67375,35.94172,15")
image paragraph message for exposure 2 of trigger 963260
------ Start for Possible Stand-alone Circular ----
In response to GRB200324 (Swift/BAT trigger 963260) at 16:39:07 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
353 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.
Results from the list of sources generated on-board are not available at this
time. No correction has been made for the expected extinction corresponding to
E(B-V) of 0.01.
------- notes for trigger 963260 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200324d19h16m47s653146usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=963260
-expid=606761125 -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/963260/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 606761125.99306 or about 2020:084:16:45:20 UT
No information found about the number of stars in the star catalog for srclist
region.
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 20.76 mag. Found 33 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 4% of the
Genie image region.
Genie image analysis:
Found 9933.8 counts in the large background region of 6203.0 pixels or a rate
of 1.601 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 20.25 mag. for a
4-arcsec aperture.
Found 283.7 counts in the XRT position region of 198.0 pixels or a rate of
1.433 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.129 +/- 0.073 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.219 cps or 20.03 mag. The closest Genie
source has ra= 222.6801 dec= 35.9303 mag=16.45 sep=45.11".
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?
606761125 352 U srclist data are not available.
606761125 352 U image found no candidates.
List afterglow candidates for other finding charts.
606760967 194 WHITE srclist found no candidates.
606760967 194 WHITE image found no candidates.
606761632 859 WHITE srclist found no candidates.
606761632 859 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 35.94172
GRB_ERROR: 5
GRB_RA: 222.67375
IMAGE_START_TIME: 16:45:20
MAGNITUDE: 20.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT