image overlap message for exposure 1 of trigger 824063
uvot_overlap.pl vrs. 2010-12-20b fem started at 180410d11h11m03s207860usUT
The observation of trigger 824063 started 2018-04-10T08:06:19.1
Examining file ./824063_g199_uvot_sky_image.fits
The exposure ID is 545040379
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (95.9524,12.8083) with a roll angle of 275.1
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 (95.9810,12.8080) with a radius of 3.000 arc min
This is 1.676 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 6.83 sq. arc min or 0.24 of the BAT error circle
The XRT error circle is centered at (95.9572,12.8114) with a radius of 0.030 arc min
This is 0.339 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 1 of trigger 824063
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180410d11h11m14s673431usUT
Observation start time is 2018-04-10T08:06:19.1
Examining file ./824063_g199_uvot_catalog_image.fits
The exposure ID is 545040379
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 17 detected source(s) for 824063_g199
Aspect correction adds 0.00072 degrees (0.172 sec of time = 2.51 arc sec) to RA
Aspect correction adds 0.00019 degrees ( 0.70 arcsec) to Dec
Total aspect correction is 2.61 arcsec
Star catalogs centered at 95.9541 , 12.8126 with radius 2.40 arc min.
n_usno: 192 n_gsc: 190
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 18 matched entries is 0.357" for 824063_g199
Mean and std. dev of mag. difference (MAG_DELTA) are 1.447 and 0.414 for 824063_g199
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 824063_g199.
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=95.9810 (06:23:55.44) DEC=12.8080 (+12:48:28.8)
XRT distances are from RA=95.9572 (06:23:49.72) DEC=12.8114 (+12:48:41.1)
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
95.9573 12.8103 4.2 -1 USNO-B1 19.12 17.40 18.17
95.9586 12.8134 8.6 -1 USNO-B1 19.57 18.31 18.87
95.9588 12.8131 8.4 -1 USNO-B1 20.01 18.52 19.18
95.9593 12.8125 8.5 -1 USNO-B1 19.20 17.76 18.40
95.9573 12.8102 4.4 -1 GSC2.3 17.66 19.40 18.04
95.9593 12.8125 8.4 -1 GSC2.3 17.86 19.52 18.80
The closest star is 4.19" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=95.95732 (06:23:49.76) dec=12.81028 (+12:48:37.0) +/- 0.7" mag=19.53+/-0.18 dist=4.1 REFID=10 flag=0
Matched source ra=95.95934 (06:23:50.24) dec=12.81251 (+12:48:45.0) +/- 0.8" mag=20.06+/-0.22 dist=8.6 REFID=8 flag=0
There are 1.1831870E+05 counts in the bkg source region of 5549.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 21.323 counts/pixel (5-sig UL in 4" is 19.69 mag) for 824063_g199
There are 4534.6372 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 22.673 counts/pixel for 824063_g199
There are 22192.535 counts in the xrt_bkg source region of 1031.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 21.525 counts/pixel (5-sig UL in 4" is 19.68 mag) for 824063_g199
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 20.24, 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: 824063_545040379_180410d11h11m14s673431usUT_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(95.9524,12.8083,45")
fk5;-circle(95.9573209634462,12.8102799397478,6")
fk5;-circle(95.959337171562,12.8125107715712,6")
fk5;-circle(95.9561623959371,12.8158150780278,6")
fk5;-circle(95.9603181933282,12.8168460255314,6")
fk5;-circle(95.9643654656701,12.8111100050727,6")
fk5;-circle(95.9645852124652,12.8078725708693,6")
fk5;-circle(95.9408253559289,12.809297522327,6")
fk5;-circle(95.9488607433007,12.7968698660363,6")
Region file: 824063_545040379_180410d11h11m14s673431usUT_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(95.95717,12.81142,8")
Region file: 824063_545040379_180410d11h11m14s673431usUT_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(95.95717,12.81142,25")
fk5;-circle(95.95717,12.81142,15")
fk5;-circle(95.9561623959371,12.8158150780278,6")
fk5;-circle(95.9603181933282,12.8168460255314,6")
fk5;-circle(95.9643654656701,12.8111100050727,6")
fk5;-circle(95.9645852124652,12.8078725708693,6")
image paragraph message for exposure 1 of trigger 824063
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
2 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 GRB180410 (Swift/BAT trigger 824063) at 08:02:59 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 179 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 19.6 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 mag. No
correction has been made for the large, but uncertain, extinction expected.
------- notes for trigger 824063 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180410d11h11m21s650338usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=824063
-expid=545040379 -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/824063/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for xrt position. XRT position found for srclist.
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 545040379.13084 or about 2018:100:08:06:14 UT
Found 1233 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 23% of the srclist region. Found 170 sources in
srclist catalog. Found 21 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 17 source(s) in Genie image catalog. 2 source(s) are within 10.0" of the
xrt position. 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
20.24 mag. Found 188 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 22% of the Genie image region.
Genie image analysis:
Found 118318.7 counts in the large background region of 5549.0 pixels or a rate
of 21.323 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 19.69 mag. for a
4-arcsec aperture.
Found 4534.6 counts in the XRT position region of 200.0 pixels or a rate of
22.673 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 1.530 +/- 0.489 (1-sigma) cps or
19.32 mag and a range from 19.02 to 19.74 mag. The 3-sigma UL at the XRT
position is 2.996 cps or 18.59 mag. The closest srclist source has ra= 95.9602
dec= 12.8169 mag=18.14 sep=22.21".
Found 2 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 95.9573 dec= 12.8103 mag=19.53 sep=4.14". The closest Genie
source has ra= 95.9573 dec= 12.8103 mag=19.53 sep=4.14".
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 179 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 06:23:49.76 = 95.95732
DEC(J2000) = +12:48:37.0 = 12.81028
with a 90%-confidence error radius of about 0.70 arc sec. This position is 4.14
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.53 with a 1-sigma error of about 0.18. No correction has been made for the
large, but uncertain, extinction expected.
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?
545040379 179 WHITE srclist found no candidates.
545040379 179 WHITE image found no candidates.
List afterglow candidates for other finding charts.
545040537 337 U srclist found no candidates.
545040537 337 U image found no candidates.
545041069 869 WHITE srclist found no candidates.
545041069 869 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 12.81142
GRB_ERROR: 5
GRB_RA: 95.95717
IMAGE_START_TIME: 08:06:14
MAGNITUDE: 18.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT