image overlap message for exposure 1 of trigger 984929
uvot_overlap.pl vrs. 2010-12-20b fem started at 200729d23h19m44s770006usUT
The observation of trigger 984929 started 2020-07-29T19:40:55.3
Examining file ./984929_g169_uvot_sky_image.fits
The exposure ID is 617744455
The exposure time is 149.868 (seconds)
The filter is WHITE.
*** Warning -- found 16998 null pixels in the image.
The uvot region is centered at (184.3674,45.5786) with a roll angle of 257.8
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 (184.3750,45.5820) with a radius of 3.000 arc min
This is 0.378 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 at most 6.16 sq. arc min or 0.22 of the BAT error circle
The XRT error circle is centered at (184.3762,45.5947) with a radius of 0.028 arc min
This is 1.037 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 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 984929
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200729d23h19m48s499596usUT
Observation start time is 2020-07-29T19:40:55.3
Examining file ./984929_g169_uvot_catalog_image.fits
The exposure ID is 617744455
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 1 detected source(s) for 984929_g169
Aspect correction adds -0.00221 degrees (-0.530 sec of time = -5.56 arc sec) to RA
Aspect correction adds 0.00092 degrees ( 3.31 arcsec) to Dec
Total aspect correction is 6.47 arcsec
Star catalogs centered at 184.3651 , 45.5663 with radius 2.00 arc min.
n_usno: 48 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 1 matched entries is 0.375" for 984929_g169
Mean and std. dev of mag. difference (MAG_DELTA) are 1.305 and 0.000 for 984929_g169
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 984929_g169.
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=184.3750 (12:17:30.00) DEC=45.5820 (+45:34:55.2)
XRT distances are from RA=184.3762 (12:17:30.30) DEC=45.5947 (+45:35:41.1)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 18298.994 counts in the bkg source region of 868.00000 pixels.
Rate in bkg region from 0 to 45 arcsec is 21.082 counts/pixel (5-sig UL in 4" is 19.69 mag) for 984929_g169
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
XRT source is too far (62.2698927470316") from center -- do not compute local background.
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 20.25, 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: 984929_617744455_200729d23h19m48s499596usUT_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(184.3674,45.5786,45")
Region file: 984929_617744455_200729d23h19m48s499596usUT_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(184.37625,45.59475,8")
image paragraph message for exposure 1 of trigger 984929
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB200729 (Swift/BAT trigger 984929) at 19:38:05 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 144 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 none of
the XRT error circle. 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 0.01.
------- notes for trigger 984929 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200729d23h19m52s309047usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=984929
-expid=617744455 -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/984929/
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 617744455.32682 or about 2020:211:19:40:50 UT
Found 243 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 42 sources in
srclist catalog. Found 23 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 20.25 mag. Found 44 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 7% of the
Genie image region. The Genie image is INCOMPLETE with 16998 null pixels.
Genie image analysis:
Found 18299.0 counts in the large background region of 868.0 pixels or a rate
of 21.082 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 19.70 mag. for a
4-arcsec aperture. The closest srclist source has ra= 184.3726 dec= 45.5891
mag=15.58 sep=22.32". The closest Genie source has ra= 184.3554 dec= 45.5647
mag=17.88 sep=120.31".
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?
617744455 144 WHITE srclist found no candidates.
617744455 144 WHITE image found no candidates.
List afterglow candidates for other finding charts.
617744613 302 U srclist found no candidates.
617744613 302 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 45.59475
GRB_ERROR: 5
GRB_RA: 184.37625
IMAGE_START_TIME: 19:40:50
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT