image overlap message for exposure 3 of trigger 885456
uvot_overlap.pl vrs. 2010-12-20b fem started at 190124d04h21m31s164045usUT
The observation of trigger 885456 started 2019-01-24T03:32:02.3
Examining file 885456_g880_uvot_sky_image.fits
The exposure ID is 569993522
The exposure time is 6.458 (seconds)
The filter is WHITE.
The uvot region is centered at (65.4913,19.5351) with a roll angle of 250.1
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 (247.7980,-47.8080) with a radius of 3.000 arc min
This is 10829.879 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 0.00 sq. arc min or 0.00 of the BAT error circle
The XRT error circle is centered at (247.8092,-47.8066) with a radius of 0.088 arc min
This is 10829.260 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 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 3 of trigger 885456
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190124d04h21m32s042631usUT
Observation start time is 2019-01-24T03:32:02.3
Examining file 885456_g880_uvot_sources_image.fits
The exposure ID is 569993522
The exposure is 6.458 sec.
The bin size is 2 pixels
The filter is WHITE
There are 11 detected source(s) for 885456_g880
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 65.4850 , 19.5378 with radius 2.32 arc min.
n_usno: 84 n_gsc: 0
*** WARNING -- XRT position is outside star catalog search region.
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 7.95
RA DEC Mag Color
bright star 0: 65.48571 (04:21:56.57) 19.53959 (+19:32:22.5) 11.70 USNO-V
bright star 1: 65.48672 (04:21:56.81) 19.53246 (+19:31:56.9) 7.95 USNO-R
bright star 2: 65.49765 (04:21:59.44) 19.53511 (+19:32:06.4) 9.94 USNO-V
Found 11 entries without IDs and 0 entries that are acceptable afterglow candidates for 885456_g880.
Acceptable entries have no ID, XRT distances < 13.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
4 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=247.7980 (16:31:11.52) DEC=-47.8080 (-47:48:28.8)
XRT distances are from RA=247.8092 (16:31:14.21) DEC=-47.8066 (-47:48:23.8)
*** WARNING 100 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 1:
ra= 65.47878 dec= 19.55485 +/- 0.9" mag=17.22+/-0.22 dist=649674.3 REFID=2 flag=0
Found 0 entries in star catalog(s) within 20" of the XRT position.
List UVOT sources within 20" of the XRT position:
There are 12724.429 counts in the bkg source region of 6187.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.057 counts/pixel (5-sig UL in 4" is 17.54 mag) for 885456_g880
Do not compute counts in XRT region because position is too far from center.
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 18.10, XRT distances < 13.25",
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: 885456_569993522_190124d04h21m32s042631usUT_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(65.4913,19.5351,45")
fk5;-circle(65.4822492424868,19.5455781725686,6")
fk5;-circle(65.4810267403161,19.5419349890214,6")
fk5;-circle(65.4898086336974,19.5221727259607,6")
image paragraph message for exposure 3 of trigger 885456
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.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB190124 (Swift/BAT trigger 885456) at 03:17:21 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 6 seconds with the White filter
starting 858 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 large, but uncertain, extinction expected.
------- notes for trigger 885456 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190124d04h21m33s228392usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=885456
-expid=569993522 -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/885456/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position. XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 569993522.252 or about 2019:024:03:31:57 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 11 source(s) in Genie image catalog. Found 11 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 18.10 mag. Found 80 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
10% of the Genie image region. The XRT position was OUTSIDE the star catalog
search region. The closest Genie source has ra= 65.4788 dec= 19.5548
mag=17.22 sep=649674.29".
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?
569993522 858 WHITE srclist data are not available.
569993522 858 WHITE image found no candidates.
List afterglow candidates for other finding charts.
569992784 120 ? srclist data are not available.
569992784 120 WHITE image found no candidates.
569992943 279 ? srclist data are not available.
569992943 279 U image found no candidates.
------- Tokens for Quick GCN -------