image overlap message for exposure 2 of trigger 1161390
uvot_overlap.pl vrs. 2010-12-20b fem started at 230325d06h01m38s668747usUT
The observation of trigger 1161390 started 2023-03-25T03:21:21.1
Examining file ./1161390_g345_uvot_sky_image.fits
The exposure ID is 701407281
The exposure time is 225.900 (seconds)
The filter is U.
The uvot region is centered at (296.8538,-46.0725) with a roll angle of 71.9
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 (296.8200,-46.0940) with a radius of 3.000 arc min
This is 1.907 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 6.46 sq. arc min or 0.23 of the BAT error circle
The XRT error circle is centered at (296.8498,-46.0761) with a radius of 0.038 arc min
This is 0.272 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 1161390
find_uvot_ag.pl vrs. 2020-10-30 fem started at 230325d06h01m44s520450usUT
Observation start time is 2023-03-25T03:21:21.1
Examining file ./1161390_g345_uvot_catalog_image.fits
The exposure ID is 701407281
The exposure is 225.900 sec.
The bin size is 2 pixels
The filter is U
There are 9 detected source(s) for 1161390_g345
Aspect correction adds 0.00158 degrees (0.380 sec of time = 3.95 arc sec) to RA
Aspect correction adds -0.00056 degrees (-2.00 arcsec) to Dec
Total aspect correction is 4.43 arcsec
Star catalogs centered at 296.8461 , -46.0718 with radius 2.44 arc min.
n_usno: 109 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 9 matched entries is 0.363" for 1161390_g345
Mean and std. dev of mag. difference (MAG_DELTA) are 1.030 and 0.420 for 1161390_g345
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1161390_g345.
Acceptable entries have no ID, XRT distances < 5.75", 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=296.8200 (19:47:16.80) DEC=-46.0940 (-46:05:38.4)
XRT distances are from RA=296.8498 (19:47:23.96) DEC=-46.0761 (-46:04:34.1)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 74698.953 counts in the bkg source region of 6083.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 12.280 counts/pixel (5-sig UL in 4" is 18.99 mag) for 1161390_g345
There are 2536.4646 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 12.810 counts/pixel for 1161390_g345
There are 14354.945 counts in the xrt_bkg source region of 1161.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 12.364 counts/pixel (5-sig UL in 4" is 18.99 mag) for 1161390_g345
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 19.55, XRT distances < 5.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1161390_701407281_230325d06h01m44s520450usUT_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(296.8538,-46.0725,45")
fk5;-circle(296.858953351217,-46.0729274056507,6")
fk5;-circle(296.858254719269,-46.080461159072,6")
Region file: 1161390_701407281_230325d06h01m44s520450usUT_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(296.84983,-46.07614,8")
Region file: 1161390_701407281_230325d06h01m44s520450usUT_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(296.84983,-46.07614,25")
fk5;-circle(296.84983,-46.07614,15")
fk5;-circle(296.858953351217,-46.0729274056507,6")
fk5;-circle(296.858254719269,-46.080461159072,6")
image paragraph message for exposure 2 of trigger 1161390
------ Start for Possible Stand-alone Circular ----
In response to GRB230325 (Swift/BAT trigger 1161390) at 03:15:35 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 226 seconds with the U filter starting
314 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
0.046.
------- notes for trigger 1161390 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 230327d20h17m57s283416usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1161390
-expid=701407281 -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/1161390/
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 701407281.07348 or about 2023:084:03:21:16 UT
Found 637 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 12% of the srclist region. Found 41 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
18.06 mag.
Found 9 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 19.55 mag. Found 105 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 12% of the
Genie image region.
Genie image analysis:
Found 74699.0 counts in the large background region of 6083.0 pixels or a rate
of 12.280 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 18.82 mag. for a
4-arcsec aperture.
Found 2536.5 counts in the XRT position region of 198.0 pixels or a rate of
12.811 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.391 +/- 0.240 (1-sigma) cps or
19.18 mag and a range from 18.66 to 20.22 mag. The 3-sigma UL at the XRT
position is 1.113 cps or 18.05 mag. The closest srclist source has ra= 296.8587
dec= -46.0730 mag=17.46 sep=24.92". The closest Genie source has ra= 296.8589
dec= -46.0729 mag=16.99 sep=25.55".
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?
701407281 314 U srclist found no candidates.
701407281 314 U image found no candidates.
List afterglow candidates for other finding charts.
701407068 101 WHITE srclist found no candidates.
701407068 101 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -46.07614
GRB_ERROR: 5.75
GRB_RA: 296.84983
IMAGE_START_TIME: 03:21:16
MAGNITUDE: 18.1
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT