image overlap message for exposure 1 of trigger 846088
uvot_overlap.pl vrs. 2010-12-20b fem started at 180704d10h35m29s304358usUT
The observation of trigger 846088 started 2018-07-04T06:31:18.6
Examining file ./846088_g3275_uvot_sky_image.fits
The exposure ID is 552378678
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (32.6534,69.9486) with a roll angle of 100.0
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 (32.6380,69.9480) with a radius of 3.000 arc min
This is 0.319 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 (32.6605,69.9641) with a radius of 0.025 arc min
This is 0.941 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 846088
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180704d10h35m32s674428usUT
Observation start time is 2018-07-04T06:31:18.6
Examining file ./846088_g3275_uvot_catalog_image.fits
The exposure ID is 552378678
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 20 detected source(s) for 846088_g3275
Aspect correction adds 0.00279 degrees (0.670 sec of time = 3.45 arc sec) to RA
Aspect correction adds -0.00028 degrees (-1.00 arcsec) to Dec
Total aspect correction is 3.59 arcsec
Star catalogs centered at 32.6561 , 69.9494 with radius 2.63 arc min.
n_usno: 258 n_gsc: 215
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.75758
RA DEC Mag Color
bright star 0: 32.64447 (02:10:34.67) 69.90704 (+69:54:25.3) 11.76 USNO-V
Mean distance difference (CAT_DELTA) for 20 matched entries is 0.363" for 846088_g3275
Mean and std. dev of mag. difference (MAG_DELTA) are 0.830 and 0.270 for 846088_g3275
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 846088_g3275.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=32.6380 (02:10:33.12) DEC=69.9480 (+69:56:52.8)
XRT distances are from RA=32.6605 (02:10:38.51) DEC=69.9641 (+69:57:50.7)
Found 2 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
32.6652 69.9652 7.0 -1 USNO-B1 99.99 19.65 99.99
32.6656 69.9651 7.3 -1 GSC2.3 20.16 99.99 99.99
The closest star is 6.99" away.
List UVOT sources within 10" of the XRT position:
There are 62557.816 counts in the bkg source region of 5964.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 10.489 counts/pixel (5-sig UL in 4" is 20.07 mag) for 846088_g3275
There are 2108.0947 counts in the xrt source region of 202.00000 pixels.
Rate in xrt region with 8 arcsec radius is 10.436 counts/pixel for 846088_g3275
XRT source is too far (56.405206955238") 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 20.63, 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: 846088_552378678_180704d10h35m32s674428usUT_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(32.6534,69.9486,45")
fk5;-circle(32.6403242508963,69.9400483498651,6")
fk5;-circle(32.6523009887803,69.9367279382218,6")
fk5;-circle(32.6659604742673,69.9558881711109,6")
fk5;-circle(32.6410703742232,69.9615937765326,6")
fk5;-circle(32.6868521696168,69.9421360445288,6")
Region file: 846088_552378678_180704d10h35m32s674428usUT_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(32.66046,69.96408,8")
image paragraph message for exposure 1 of trigger 846088
------ Start for Possible Stand-alone Circular ----
In response to GRB180704 (Swift/BAT trigger 846088) at 05:36:42 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 3254 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 expected extinction
corresponding to E(B-V) of 0.87.
------- notes for trigger 846088 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180704d10h35m36s822618usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=846088
-expid=552378678 -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/846088/
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 552378678.62474 or about 2018:185:06:31:13 UT
Found 1103 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 21% of the srclist region. Found 153 sources in
srclist catalog. Found 41 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 20 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 20.63 mag. Found 254 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
25% of the Genie image region.
Genie image analysis:
Found 62557.8 counts in the large background region of 5964.0 pixels or a rate
of 10.489 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 20.07 mag. for a
4-arcsec aperture.
Found 2108.1 counts in the XRT position region of 202.0 pixels or a rate of
10.436 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is -0.072 +/- 0.311 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.934 cps or 19.85 mag. The closest srclist
source has ra= 32.6663 dec= 69.9559 mag=18.45 sep=30.36". The closest Genie
source has ra= 32.6660 dec= 69.9703 mag=19.76 sep=23.47".
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?
552378678 3253 WHITE srclist found no candidates.
552378678 3253 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 69.96408
GRB_ERROR: 5
GRB_RA: 32.66046
IMAGE_START_TIME: 06:31:13
MAGNITUDE: 19.9
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT