image overlap message for exposure 1 of trigger 883832
uvot_overlap.pl vrs. 2010-12-20b fem started at 190115d05h32m55s781567usUT
The observation of trigger 883832 started 2019-01-14T20:58:39.0
Examining file ./883832_g95_uvot_sky_image.fits
The exposure ID is 569192319
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (54.5033,-26.9476) with a roll angle of 237.5
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 (54.5100,-26.9390) with a radius of 3.000 arc min
This is 0.631 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 (54.5050,-26.9466) with a radius of 0.023 arc min
This is 0.113 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 883832
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190115d05h32m57s567729usUT
Observation start time is 2019-01-14T20:58:39.0
Examining file ./883832_g95_uvot_sources_image.fits
The exposure ID is 569192319
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 4 detected source(s) for 883832_g95
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 54.4956 , -26.9368 with radius 2.00 arc min.
n_usno: 40 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.37366
RA DEC Mag Color
bright star 0: 54.48947 (03:37:57.47) -26.93057 (-26:55:50.0) 11.37 USNO-V
Found 4 entries without IDs and 1 entries that are acceptable afterglow candidates for 883832_g95.
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.
3 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=54.5100 (03:38:02.40) DEC=-26.9390 (-26:56:20.4)
XRT distances are from RA=54.5050 (03:38:01.20) DEC=-26.9466 (-26:56:47.6)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 883832_g95 with genie
ra=54.50567 (03:38:01.36) dec=-26.94492 (-26:56:41.7) +/- 0.7" mag=14.89+/-0.14
dist=6.3 REFID=1 major=0.9 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 25.5 arc sec from the BAT position.
Found 1 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 12 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
54.5017 -26.9489 19.2 -1 USNO-B1 18.98 99.99 99.99
*** If XRT position is correct, then this is NOT the afterglow
Found 1 entries in star catalog(s) within 20" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
54.5017 -26.9489 13.6 -1 USNO-B1 18.98 99.99 99.99
The closest star is 13.61" away.
List UVOT sources within 20" of the XRT position:
Unmatched source ra=54.50567 (03:38:01.36) dec=-26.94492 (-26:56:41.7) +/- 0.7" mag=14.89+/-0.14 dist=6.3 REFID=1 flag=0
There are 41444.855 counts in the bkg source region of 6197.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 6.688 counts/pixel (5-sig UL in 4" is 20.32 mag) for 883832_g95
There are 9908.5908 counts in the xrt source region of 199.00000 pixels.
Rate in xrt region with 8 arcsec radius is 49.792 counts/pixel for 883832_g95
There are 8997.8984 counts in the xrt_bkg source region of 1246.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 7.221 counts/pixel (5-sig UL in 4" is 20.28 mag) for 883832_g95
There are 1 candidate(s) outside XRT error circle with mag < 20.31
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.87, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Results are questionable because aspect solution FAILED.
Region file: 883832_569192319_190115d05h32m57s567729usUT_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(54.5033,-26.9476,45")
fk5;-circle(54.5056653005538,-26.9449235122616,6")
Region file: 883832_569192319_190115d05h32m57s567729usUT_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(54.50500,-26.94656,8")
Region file: 883832_569192319_190115d05h32m57s567729usUT_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(54.50500,-26.94656,25")
fk5;-circle(54.50500,-26.94656,15")
image paragraph message for exposure 1 of trigger 883832
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no aspect solution
SRCLIST PROBLEM: no srclist afterglow info
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 GRB190114 (Swift/BAT trigger 883832) at 20:57:03 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 73 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. The 2.7'x2.7' sub-image processing
FAILED because of no aspect solution. 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 883832 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190115d05h33m00s817708usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=883832
-expid=569192319 -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/883832/
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 569192319.01262 or about 2019:014:20:58:34 UT
No information found about the number of stars in the star catalog for srclist
region.
THERE IS NO ASPECT SOLUTION for the image data.
Found 4 source(s) in Genie image catalog. 1 source(s) are within 20.0" of the
xrt position. Found 4 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.87 mag. Found 36 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 6% of the Genie image region.
Found 1 Genie source(s) within 20.0" of the XRT position. The brightest such
source has ra= 54.5057 dec= -26.9449 mag=14.89 sep=6.27". The closest Genie
source has ra= 54.5057 dec= -26.9449 mag=14.89 sep=6.27".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the image data with mag < 20.31 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=54.50567
(03:38:01.36), DEC=-26.94492 (-26:56:41.7) (J2000). It has a mag of 14.89. It
is 25.5" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 73 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 03:38:01.36 = 54.50567
DEC(J2000) = -26:56:41.7 = -26.94492
with a 90%-confidence error radius of about 0.74 arc sec. The estimated
magnitude is 14.89 with a 1-sigma error of about 0.14. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.01.
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 73 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 03:38:01.36 = 54.50567
DEC(J2000) = -26:56:41.7 = -26.94492
with a 90%-confidence error radius of about 0.74 arc sec. This position is 6.27
arc sec. from the center of the XRT error circle. The estimated magnitude is
14.89 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.01.
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?
569192319 73 WHITE srclist data are not available.
569192319 73 WHITE image found no candidates.
List afterglow candidates for other finding charts.
569192530 284 ? srclist data are not available.
569192530 284 U 54.50579 -26.94511 17.57/20.7 6.6 image No
------- Tokens for Quick GCN -------