image overlap message for exposure 3 of trigger 1114937
uvot_overlap.pl vrs. 2010-12-20b fem started at 220707d00h01m43s794532usUT
The observation of trigger 1114937 started 2022-07-06T16:24:19.3
Examining file ./1114937_g904_uvot_sky_image.fits
The exposure ID is 678817459
The exposure time is 149.868 (seconds)
The filter is WHITE.
*** Warning -- found 3040 null pixels in the image.
The uvot region is centered at (0.5929,-16.3893) with a roll angle of 71.3
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 (0.5870,-16.3910) with a radius of 3.000 arc min
This is 0.357 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 (0.6043,-16.4112) with a radius of 0.037 arc min
This is 1.469 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 3 of trigger 1114937
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220707d00h02m04s308252usUT
Observation start time is 2022-07-06T16:24:19.3
Examining file ./1114937_g904_uvot_catalog_image.fits
The exposure ID is 678817459
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 1 detected source(s) for 1114937_g904
Aspect correction adds 0.00186 degrees (0.446 sec of time = 6.42 arc sec) to RA
Aspect correction adds -0.00017 degrees (-0.61 arcsec) to Dec
Total aspect correction is 6.45 arcsec
Star catalogs centered at 0.5997 , -16.4033 with radius 2.00 arc min.
n_usno: 13 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 1 matched entries is 0.240" for 1114937_g904
Mean and std. dev of mag. difference (MAG_DELTA) are 0.843 and 0.000 for 1114937_g904
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1114937_g904.
Acceptable entries have no ID, XRT distances < 5.5", 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= 0.5870 (00:02:20.88) DEC=-16.3910 (-16:23:27.6)
XRT distances are from RA= 0.6043 (00:02:25.03) DEC=-16.4112 (-16:24:40.4)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 1.6471512E+05 counts in the bkg source region of 6307.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 26.116 counts/pixel (5-sig UL in 4" is 19.58 mag) for 1114937_g904
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 20.13, XRT distances < 5.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1114937_678817459_220707d00h02m04s308252usUT_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(0.5929,-16.3893,45")
image paragraph message for exposure 3 of trigger 1114937
IMAGE PROBLEM: damaged image (negative pixel value)
------ Start for Possible Stand-alone Circular ----
In response to GRB220706 (Swift/BAT trigger 1114937) at 16:09:14 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 875 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 damaged image (negative pixel value). 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 expected extinction corresponding to E(B-V) of 0.025.
------- notes for trigger 1114937 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220707d00h02m08s807670usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1114937
-expid=678817459 -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/1114937/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
The Genie image appears to be DAMAGED with a min. value of -5726.453125.
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 678817459.27922 or about 2022:187:16:24:14 UT
Found 444 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 29 sources in
srclist catalog. Found 2 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 1 source(s) in Genie image catalog. 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 20.13 mag. Found 9 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 1% of the
Genie image region. The Genie image is INCOMPLETE with 3040 null pixels.
The closest srclist source has ra= 0.5997 dec= -16.4033 mag=18.45 sep=32.52".
The closest Genie source has ra= 0.5997 dec= -16.4033 mag=18.22 sep=32.47".
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?
678817459 875 WHITE srclist found no candidates.
678817459 875 WHITE image found no candidates.
List afterglow candidates for other finding charts.
678816691 107 WHITE srclist found no candidates.
678816691 107 WHITE image found no candidates.
678816903 319 ? srclist data are not available.
678816903 319 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -16.41122
GRB_ERROR: 5.5
GRB_RA: 0.60429
IMAGE_START_TIME: 16:24:14
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT