image overlap message for exposure 1 of trigger 913302
uvot_overlap.pl vrs. 2010-12-20b fem started at 190706d15h30m54s989504usUT
The observation of trigger 913302 started 2019-07-06T12:42:53.4
Examining file ./913302_g122_uvot_sky_image.fits
The exposure ID is 584109773
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (107.4456,-29.5792) with a roll angle of 357.6
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 (107.4490,-29.5840) with a radius of 3.000 arc min
This is 0.339 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 (107.4621,-29.5529) with a radius of 0.030 arc min
This is 1.795 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 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 913302
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190706d15h31m01s906915usUT
Observation start time is 2019-07-06T12:42:53.4
Examining file ./913302_g122_uvot_catalog_image.fits
The exposure ID is 584109773
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 44 detected source(s) for 913302_g122
Aspect correction adds 0.00068 degrees (0.162 sec of time = 2.12 arc sec) to RA
Aspect correction adds 0.00066 degrees ( 2.37 arcsec) to Dec
Total aspect correction is 3.18 arcsec
Star catalogs centered at 107.4433 , -29.5773 with radius 2.69 arc min.
n_usno: 300 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.50646
RA DEC Mag Color
bright star 0: 107.46158 (07:09:50.78) -29.59597 (-29:35:45.5) 10.51 USNO-V
bright star 1: 107.41026 (07:09:38.46) -29.59754 (-29:35:51.2) 11.40 USNO-V
Mean distance difference (CAT_DELTA) for 39 matched entries is 0.570" for 913302_g122
Mean and std. dev of mag. difference (MAG_DELTA) are 0.567 and 0.714 for 913302_g122
Found 7 entries without IDs and 3 entries that are acceptable afterglow candidates for 913302_g122.
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.
4 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=107.4490 (07:09:47.76) DEC=-29.5840 (-29:35:02.4)
XRT distances are from RA=107.4621 (07:09:50.91) DEC=-29.5529 (-29:33:10.5)
-----------------
Entry 13 in the list of sources is a candidate afterglow for 913302_g122 with genie
ra=107.44313 (07:09:46.35) dec=-29.57255 (-29:34:21.2) +/- 0.6" mag=16.39+/-0.14
dist=92.4 REFID=21 major=0.9 minor=0.9 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 45.1 arc sec from the BAT position.
Found 3 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 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
107.4444 -29.5721 4.2 -1 USNO-B1 15.37 14.25 14.75
107.4446 -29.5720 5.1 -1 USNO-B1 15.68 14.90 15.24
107.4449 -29.5710 7.9 -1 USNO-B1 19.68 17.99 18.74
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 25 in the list of sources is a candidate afterglow for 913302_g122 with genie
ra=107.47017 (07:09:52.84) dec=-29.58274 (-29:34:57.9) +/- 0.6" mag=17.80+/-0.14
dist=110.3 REFID=22 major=3.1 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 66.4 arc sec from the BAT position.
This source is near the edge of image (0.931)
Found 4 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
107.4668 -29.5810 12.2 -1 USNO-B1 21.25 18.97 19.98
107.4681 -29.5838 7.7 -1 USNO-B1 20.89 18.86 19.76
107.4702 -29.5809 6.6 -1 USNO-B1 17.21 16.33 16.72
107.4726 -29.5806 11.0 -1 USNO-B1 20.12 99.99 99.99
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 3.1
-----------------
Entry 37 in the list of sources is a candidate afterglow for 913302_g122 with genie
ra=107.47245 (07:09:53.39) dec=-29.56941 (-29:34:09.9) +/- 0.6" mag=17.54+/-0.14
dist=67.6 REFID=15 major=2.8 minor=2.2 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 90.3 arc sec from the BAT position.
This source is near the edge of image (0.867)
Found 3 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
107.4681 -29.5678 14.7 -1 USNO-B1 12.16 12.31 12.24
107.4715 -29.5686 4.1 -1 USNO-B1 17.95 16.93 17.39 *
107.4731 -29.5699 2.7 -1 USNO-B1 19.76 19.52 19.63 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
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
107.4611 -29.5554 9.6 -1 USNO-B1 19.55 18.66 19.05
107.4594 -29.5525 8.7 -1 USNO-B1 20.46 19.96 20.18
The closest star is 8.68" away.
List UVOT sources within 10" of the XRT position:
There are 75741.969 counts in the bkg source region of 5094.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 14.869 counts/pixel (5-sig UL in 4" is 19.88 mag) for 913302_g122
Do not compute counts in XRT region because position is too far from center.
There are 1 candidate(s) outside XRT error circle with mag < 19.88
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.44, 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: 913302_584109773_190706d15h31m01s906915usUT_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(107.4456,-29.5792,45")
fk5;-circle(107.450011711723,-29.5865184865906,6")
fk5;-circle(107.449463457331,-29.5794150451633,6")
fk5;-circle(107.449207636923,-29.5890976413998,6")
fk5;-circle(107.44238760939,-29.5854947466737,6")
fk5;-circle(107.452140242931,-29.5772723526063,6")
fk5;-circle(107.446347351032,-29.5922072926833,6")
fk5;-circle(107.439270185339,-29.5808255899352,6")
fk5;-circle(107.457779283174,-29.5755535825309,6")
fk5;-circle(107.445216873289,-29.5720749017137,6")
fk5;-circle(107.443125482414,-29.5725480542644,6")
fk5;-circle(107.434622099019,-29.5771614095168,6")
fk5;-circle(107.452481609084,-29.5680516002369,6")
fk5;-circle(107.455404388687,-29.5684902790162,6")
fk5;-circle(107.43587978408,-29.5701433640003,6")
image paragraph message for exposure 1 of trigger 913302
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no overlap
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB190706 (Swift/BAT trigger 913302) at 12:40:50 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 100 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 0.15.
------- notes for trigger 913302 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190706d15h31m05s850360usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=913302
-expid=584109773 -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/913302/
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 584109773.36104 or about 2019:187:12:42:48 UT
Found 1682 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 26% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 13 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 44 source(s) in Genie image catalog. Found 7 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.44 mag. Found 296 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
28% of the Genie image region.
Genie image analysis:
Found 75742.0 counts in the large background region of 5094.0 pixels or a rate
of 14.869 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 19.88 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.83 mag. The closest srclist
source has ra= 107.4737 dec= -29.5505 mag=17.42 sep=37.17". The closest Genie
source has ra= 107.4505 dec= -29.5582 mag=15.66 sep=41.11".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the image data with mag < 19.88 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=107.44313
(07:09:46.35), DEC=-29.57255 (-29:34:21.2) (J2000). It has a mag of 16.39. It
is 45.1" 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 100 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 07:09:46.35 = 107.44313
DEC(J2000) = -29:34:21.2 = -29.57255
with a 90%-confidence error radius of about 0.61 arc sec. The estimated
magnitude is 16.39 with a 1-sigma error of about 0.14. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.15.
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the srclist data with mag < 18.66 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=107.44316
(07:09:46.36), DEC=-29.57253 (-29:34:21.1) (J2000). It has a mag of 16.90. It
is 45.2" 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 100 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 07:09:46.36 = 107.44316
DEC(J2000) = -29:34:21.1 = -29.57253
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 16.90 with a 1-sigma error of about 0.35. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.15.
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?
584109773 99 WHITE srclist found no candidates.
584109773 99 WHITE image found no candidates.
List afterglow candidates for other finding charts.
584109985 311 U srclist found no candidates.
584109985 311 U image found no candidates.
584110541 867 WHITE srclist found no candidates.
584110541 867 WHITE image found no candidates.
------- Tokens for Quick GCN -------