image overlap message for exposure 3 of trigger 908329
uvot_overlap.pl vrs. 2010-12-20b fem started at 190613d14h22m12s279725usUT
The observation of trigger 908329 started 2019-06-13T11:01:59.2
Examining file ./908329_g896_uvot_sky_image.fits
The exposure ID is 582116519
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (305.4335,-4.6423) with a roll angle of 62.0
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 (305.4220,-4.6640) with a radius of 3.000 arc min
This is 1.472 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 (305.4320,-4.6469) with a radius of 0.028 arc min
This is 0.286 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 3 of trigger 908329
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190613d14h22m40s207701usUT
Observation start time is 2019-06-13T11:01:59.2
Examining file ./908329_g896_uvot_catalog_image.fits
The exposure ID is 582116519
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 25 detected source(s) for 908329_g896
Aspect correction adds 0.00097 degrees (0.232 sec of time = 3.47 arc sec) to RA
Aspect correction adds 0.00026 degrees ( 0.93 arcsec) to Dec
Total aspect correction is 3.59 arcsec
Star catalogs centered at 305.4339 , -4.6424 with radius 2.65 arc min.
n_usno: 160 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 24 matched entries is 0.326" for 908329_g896
Mean and std. dev of mag. difference (MAG_DELTA) are 0.801 and 0.422 for 908329_g896
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 908329_g896.
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=305.4220 (20:21:41.28) DEC=-4.6640 (-04:39:50.4)
XRT distances are from RA=305.4320 (20:21:43.69) DEC=-4.6469 (-04:38:48.7)
-----------------
Entry 1 in the list of sources is a candidate afterglow for 908329_g896 with genie
ra=305.43200 (20:21:43.68) dec=-4.64661 (-04:38:47.8) +/- 0.7" mag=20.15+/-0.20
dist=0.9 REFID=19 major=0.9 minor=0.8 flag=3 (neighbor+blended)
Found 1 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
305.4300 -4.6463 7.2 -1 USNO-B1 17.37 16.18 16.71
uvot_check_outside found 12 of 12 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
Found 1 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
305.4300 -4.6463 7.6 -1 USNO-B1 17.37 16.18 16.71
The closest star is 7.59" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=305.43002 (20:21:43.21) dec=-4.64626 (-04:38:46.5) +/- 0.6" mag=17.50+/-0.14 dist=7.6 REFID=18 flag=2
Unmatched source ra=305.43200 (20:21:43.68) dec=-4.64661 (-04:38:47.8) +/- 0.7" mag=20.15+/-0.20 dist=0.9 REFID=19 flag=3
There are 53902.164 counts in the bkg source region of 5558.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 9.698 counts/pixel (5-sig UL in 4" is 20.12 mag) for 908329_g896
There are 617.21844 counts in the src source region of 48.000000 pixels.
Rate in src region with 4 arcsec radius is 12.859 counts/pixel for 908329_g896
There are 10835.312 counts in the cand_src_bkg source region of 1126.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 9.623 counts/pixel (5-sig UL in 4" is 20.12 mag) for 908329_g896
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 20.67, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 908329_582116519_190613d14h22m40s207701usUT_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(305.4335,-4.6423,45")
fk5;-circle(305.430023391531,-4.64626080523049,6")
fk5;-circle(305.432000228824,-4.64661121726289,6")
fk5;-circle(305.425742718136,-4.64294938202575,6")
fk5;-circle(305.42853173881,-4.65198134812996,6")
fk5;-circle(305.425379765614,-4.63620610381992,6")
fk5;-circle(305.44275093518,-4.64329004775249,6")
fk5;-circle(305.44507861041,-4.64175511769763,6")
fk5;-circle(305.446357976301,-4.6454744467867,6")
fk5;-circle(305.432532124903,-4.62831758097569,6")
fk5;-circle(305.434984356991,-4.628373442642,6")
Region file: 908329_582116519_190613d14h22m40s207701usUT_cand_src.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(305.432000228824,-4.64661121726289,4")
Region file: 908329_582116519_190613d14h22m40s207701usUT_cand_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(305.432000228824,-4.64661121726289,25")
fk5;-circle(305.432000228824,-4.64661121726289,15")
fk5;-circle(305.425742718136,-4.64294938202575,6")
fk5;-circle(305.42853173881,-4.65198134812996,6")
image paragraph message for exposure 3 of trigger 908329
------ Start for Possible Stand-alone Circular ----
In response to GRB190613 (Swift/BAT trigger 908329) at 10:47:02 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 874 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 20:21:43.68 = 305.43200
DEC(J2000) = -04:38:47.8 = -4.64661
with a 90%-confidence error radius of about 0.74 arc sec. This position is 0.9
arc sec. from the center of the XRT error circle. The estimated magnitude is
20.15 with a 1-sigma error of about 0.20. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.07.
------- notes for trigger 908329 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190613d14h22m46s582905usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=908329
-expid=582116519 -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/908329/
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 582116519.19706 or about 2019:164:11:01:54 UT
Found 1743 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 15% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 9 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
Found 25 source(s) in Genie image catalog. 2 source(s) are within 10.0" of the
xrt position. Found 1 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.67 mag. Found 156 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 15% of the Genie image region.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 305.4300 dec= -4.6463 mag=18.35 sep=7.49".
The closest srclist source has ra= 305.4300 dec= -4.6463 mag=18.35 sep=7.49".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 874 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 20:21:43.21 = 305.43004
DEC(J2000) = -04:38:46.5 = -4.64625
with a 90%-confidence error radius of about 1.10 arc sec. This position is 7.49
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.35 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.07.
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?
582116519 873 WHITE srclist found no candidates.
582116519 873 WHITE 305.43200 -4.64661 20.15/20.7 0.9 image Yes
List afterglow candidates for other finding charts.
582115751 105 WHITE 305.43192 -4.64651 18.54/19.2 1.3 srclist Yes
582115751 105 WHITE 305.43189 -4.64665 17.76/20.7 0.9 image Yes
582115963 317 U 305.43190 -4.64647 19.43/18.1 1.5 srclist Yes
582115963 317 U 305.43192 -4.64668 18.84/20.5 0.8 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -4.64661
GRB_ERROR: 0.74
GRB_RA: 305.43200
IMAGE_START_TIME: 11:01:54
MAGNITUDE: 20.15
MAG_ERROR: 0.20
MESSAGE_TYPE: ACK
SOURCE: XRT