image overlap message for exposure 1 of trigger 815603
uvot_overlap.pl vrs. 2010-12-20b fem started at 180319d01h29m25s253940usUT
The observation of trigger 815603 started 2018-03-19T01:14:00.2
Examining file 815603_g108_uvot_sky_image.fits
The exposure ID is 543114840
The exposure time is 149.846 (seconds)
The filter is WHITE.
The uvot region is centered at (275.0963,7.1871) with a roll angle of 91.5
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 (275.0940,7.1690) with a radius of 3.000 arc min
This is 1.092 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 (275.0915,7.1839) with a radius of 0.090 arc min
This is 0.344 arc min from the center of the uvot region
The area of the XRT error circle is 0.025 sq. arc min
The UVOT/XRT overlap is 0.025 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 815603
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180319d01h29m26s191645usUT
Observation start time is 2018-03-19T01:14:00.2
Examining file 815603_g108_uvot_catalog_image.fits
The exposure ID is 543114840
The exposure is 149.846 sec.
The bin size is 2 pixels
The filter is WHITE
There are 54 detected source(s) for 815603_g108
Aspect correction adds -0.00048 degrees (-0.114 sec of time = -1.70 arc sec) to RA
Aspect correction adds -0.00069 degrees (-2.50 arcsec) to Dec
Total aspect correction is 3.02 arcsec
Star catalogs centered at 275.0929 , 7.1904 with radius 2.64 arc min.
n_usno: 428 n_gsc: 527
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.20508
RA DEC Mag Color
bright star 0: 275.09094 (18:20:21.83) 7.21634 (+07:12:58.8) 11.21 USNO-V
bright star 1: 275.05371 (18:20:12.89) 7.17657 (+07:10:35.6) 11.84 GSC-V
Mean distance difference (CAT_DELTA) for 54 matched entries is 0.496" for 815603_g108
Mean and std. dev of mag. difference (MAG_DELTA) are 0.844 and 0.875 for 815603_g108
Found 3 entries without IDs and 2 entries that are acceptable afterglow candidates for 815603_g108.
Acceptable entries have no ID, XRT distances < 13.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=275.0940 (18:20:22.56) DEC= 7.1690 (+07:10:08.4)
XRT distances are from RA=275.0915 (18:20:21.96) DEC= 7.1839 (+07:11:02.0)
-----------------
Entry 1 in the list of sources is a candidate afterglow for 815603_g108 with genie
ra=275.09515 (18:20:22.84) dec=7.18259 (+07:10:57.3) +/- 0.6" mag=18.05+/-0.15
dist=13.9 REFID=35 major=3.7 minor=1.8 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 49.1 arc sec from the BAT position.
Found 18 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
275.0914 7.1854 16.6 -1 USNO-B1 18.30 17.54 17.87
275.0937 7.1833 5.6 -1 USNO-B1 19.88 18.17 18.93
275.0920 7.1827 11.2 -1 USNO-B1 20.32 18.74 19.44
275.0957 7.1828 2.2 -1 USNO-B1 19.54 18.15 18.76 *
275.1001 7.1848 19.4 -1 USNO-B1 18.29 16.42 17.25
275.0993 7.1819 14.8 -1 USNO-B1 19.56 17.19 18.24
275.0915 7.1796 16.9 -1 USNO-B1 20.29 18.68 19.39
275.0990 7.1805 15.5 -1 USNO-B1 18.38 16.53 17.35
275.0963 7.1772 19.7 -1 USNO-B1 19.28 17.64 18.37
275.0915 7.1853 16.3 -1 GSC2.3 18.05 18.87 17.17
275.0938 7.1832 5.3 -1 GSC2.3 18.15 19.43 18.79
275.0920 7.1826 11.1 -1 GSC2.3 18.58 20.31 99.99
275.0959 7.1828 2.6 -1 GSC2.3 18.04 19.09 18.46 *
275.1001 7.1847 19.3 -1 GSC2.3 16.42 17.59 16.91
275.0993 7.1820 15.1 -1 GSC2.3 17.72 19.31 99.99
275.0916 7.1796 16.8 -1 GSC2.3 18.70 20.20 99.99
275.0990 7.1804 15.8 -1 GSC2.3 16.86 17.95 16.39
275.0963 7.1773 19.6 -1 GSC2.3 17.62 18.90 18.17
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 2 in the list of sources is a candidate afterglow for 815603_g108 with genie
ra=275.09175 (18:20:22.02) dec=7.18048 (+07:10:49.7) +/- 0.6" mag=18.27+/-0.15
dist=12.3 REFID=38 major=4.1 minor=1.9 flag=2 (blended)
Found 21 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
275.0914 7.1854 17.6 -1 USNO-B1 18.30 17.54 17.87
275.0937 7.1833 12.3 -1 USNO-B1 19.88 18.17 18.93
275.0920 7.1827 8.1 -1 USNO-B1 20.32 18.74 19.44
275.0957 7.1828 16.5 -1 USNO-B1 19.54 18.15 18.76
275.0886 7.1818 12.3 -1 USNO-B1 17.31 15.38 16.24
275.0883 7.1805 12.4 -1 USNO-B1 19.66 18.12 18.80
275.0915 7.1796 3.3 -1 USNO-B1 20.29 18.68 19.39 *
275.0904 7.1783 9.3 -1 USNO-B1 20.31 18.47 19.29
275.0950 7.1763 19.2 -1 USNO-B1 19.12 17.65 18.30
275.0915 7.1853 17.3 -1 GSC2.3 18.05 18.87 17.17
275.0938 7.1832 12.4 -1 GSC2.3 18.15 19.43 18.79
275.0920 7.1826 7.7 -1 GSC2.3 18.58 20.31 99.99
275.0959 7.1828 16.9 -1 GSC2.3 18.04 19.09 18.46
275.0873 7.1833 18.6 -1 GSC2.3 20.22 21.37 99.99
275.0886 7.1818 12.2 -1 GSC2.3 14.99 16.84 15.25
275.0916 7.1796 3.4 -1 GSC2.3 18.70 20.20 99.99 *
275.0883 7.1802 12.5 -1 GSC2.3 99.99 20.05 99.99
275.0904 7.1782 9.4 -1 GSC2.3 18.64 20.08 18.98
275.0906 7.1779 10.3 -1 GSC2.3 20.30 99.99 99.99
275.0915 7.1770 12.5 -1 GSC2.3 19.87 21.72 99.99
275.0951 7.1762 19.5 -1 GSC2.3 17.64 18.72 18.13
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
Found 6 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
275.0914 7.1854 5.3 -1 USNO-B1 18.30 17.54 17.87
275.0937 7.1833 8.3 -1 USNO-B1 19.88 18.17 18.93
275.0920 7.1827 4.6 -1 USNO-B1 20.32 18.74 19.44
275.0915 7.1853 4.9 -1 GSC2.3 18.05 18.87 17.17
275.0938 7.1832 8.6 -1 GSC2.3 18.15 19.43 18.79
275.0920 7.1826 5.1 -1 GSC2.3 18.58 20.31 99.99
The closest star is 4.63" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=275.09158 (18:20:21.98) dec=7.18527 (+07:11:07.0) +/- 0.6" mag=13.69+/-0.14 dist=4.9 REFID=27 flag=0
There are 59445.992 counts in the bkg source region of 4096.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 14.513 counts/pixel (5-sig UL in 4" is 19.90 mag) for 815603_g108
There are 15164.708 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 75.824 counts/pixel for 815603_g108
There are 16044.862 counts in the xrt_bkg source region of 885.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 18.130 counts/pixel (5-sig UL in 4" is 19.78 mag) for 815603_g108
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 20.45, XRT distances < 13.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 815603_543114840_180319d01h29m26s191645usUT_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(275.0963,7.1871,45")
fk5;-circle(275.09157585636,7.18527204134973,6")
fk5;-circle(275.095151017565,7.18259132487674,6")
fk5;-circle(275.091745696281,7.18047886026018,6")
fk5;-circle(275.088613106638,7.18186208966118,6")
fk5;-circle(275.087467803453,7.18821412631362,6")
fk5;-circle(275.091284902066,7.19021299106233,6")
fk5;-circle(275.097643656879,7.18807260734419,6")
fk5;-circle(275.098967071205,7.18048445283329,6")
fk5;-circle(275.096375596219,7.17733618144695,6")
fk5;-circle(275.100051596178,7.18470254233417,6")
fk5;-circle(275.083640186698,7.18416018126699,6")
fk5;-circle(275.095126857562,7.17624778876978,6")
fk5;-circle(275.103154632782,7.18293933503919,6")
fk5;-circle(275.102718047863,7.18733064315636,6")
fk5;-circle(275.087185464521,7.1946409700595,6")
fk5;-circle(275.097644516947,7.17371488729957,6")
fk5;-circle(275.102691135383,7.17796592337764,6")
fk5;-circle(275.104362152073,7.18574130169723,6")
fk5;-circle(275.103871821257,7.1899694981404,6")
fk5;-circle(275.093693852547,7.19722757316305,6")
fk5;-circle(275.090118483279,7.19749529333658,6")
fk5;-circle(275.100418678846,7.1958391369974,6")
fk5;-circle(275.10510899878,7.19477438554582,6")
Region file: 815603_543114840_180319d01h29m26s191645usUT_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(275.0915,+7.1839,8")
Region file: 815603_543114840_180319d01h29m26s191645usUT_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(275.0915,+7.1839,25")
fk5;-circle(275.0915,+7.1839,15")
fk5;-circle(275.095151017565,7.18259132487674,6")
fk5;-circle(275.091745696281,7.18047886026018,6")
fk5;-circle(275.088613106638,7.18186208966118,6")
fk5;-circle(275.087467803453,7.18821412631362,6")
fk5;-circle(275.091284902066,7.19021299106233,6")
fk5;-circle(275.097643656879,7.18807260734419,6")
fk5;-circle(275.098967071205,7.18048445283329,6")
fk5;-circle(275.096375596219,7.17733618144695,6")
fk5;-circle(275.100051596178,7.18470254233417,6")
fk5;-circle(275.083640186698,7.18416018126699,6")
fk5;-circle(275.095126857562,7.17624778876978,6")
image paragraph message for exposure 1 of trigger 815603
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: high density of stars
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
1 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB180319 (Swift/BAT trigger 815603) at 01:12:11 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 88 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. Because of the density of catalogued stars, further
analysis is required to report an upper limit for any afterglow in the
sub-image. The 8'x8' region for the list of sources generated on-board covers
100% of the XRT error circle. Because of the density of catalogued stars,
further analysis is required to report an upper limit for any afterglow in the
region. No correction has been made for the expected extinction corresponding
to E(B-V) of 0.23.
------- notes for trigger 815603 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180319d01h29m45s891338usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=815603
-expid=543114840 -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/815603/
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 543114840.16616 or about 2018:078:01:13:55 UT
Found 2780 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 49% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 8 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 54 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 3 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.45 mag. Found 513 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 51% of the Genie image region.
Genie image analysis:
Found 59446.0 counts in the large background region of 4096.0 pixels or a rate
of 14.513 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 19.90 mag. for a
4-arcsec aperture.
Found 15164.7 counts in the XRT position region of 200.0 pixels or a rate of
75.824 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 76.925 +/- 0.843 (1-sigma) cps or
15.06 mag and a range from 15.05 to 15.08 mag. The 3-sigma UL at the XRT
position is 79.453 cps or 15.03 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.79 mag.
Found 2 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 275.0914 dec= 7.1849 mag=14.36 sep=3.58".
The closest srclist source has ra= 275.0914 dec= 7.1849 mag=14.36 sep=3.58".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 275.0916 dec= 7.1853 mag=13.69 sep=4.95". The closest Genie
source has ra= 275.0916 dec= 7.1853 mag=13.69 sep=4.95".
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 88 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 18:20:21.98 = 275.09158
DEC(J2000) = +07:11:07.0 = 7.18527
with a 90%-confidence error radius of about 0.61 arc sec. This position is 4.95
arc sec. from the center of the XRT error circle. The estimated magnitude is
13.69 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.23.
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?
543114840 88 WHITE srclist found no candidates.
543114840 88 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------