image overlap message for exposure 3 of trigger 913302
uvot_overlap.pl vrs. 2010-12-20b fem started at 190706d15h30m56s615423usUT
The observation of trigger 913302 started 2019-07-06T12:55:41.3
Examining file ./913302_g890_uvot_sky_image.fits
The exposure ID is 584110541
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (107.4469,-29.5794) 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 0.299 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 1.774 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 3 of trigger 913302
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190706d15h31m23s388067usUT
Observation start time is 2019-07-06T12:55:41.3
Examining file ./913302_g890_uvot_catalog_image.fits
The exposure ID is 584110541
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 43 detected source(s) for 913302_g890
Aspect correction adds 0.00038 degrees (0.091 sec of time = 1.19 arc sec) to RA
Aspect correction adds 0.00078 degrees ( 2.81 arcsec) to Dec
Total aspect correction is 3.05 arcsec
Star catalogs centered at 107.4447 , -29.5800 with radius 2.69 arc min.
n_usno: 294 n_gsc: 0
*** WARNING -- bright star catalog has 3 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
bright star 2: 107.40663 (07:09:37.59) -29.60960 (-29:36:34.6) 11.98 USNO-V
Mean distance difference (CAT_DELTA) for 40 matched entries is 0.686" for 913302_g890
Mean and std. dev of mag. difference (MAG_DELTA) are 0.415 and 1.010 for 913302_g890
Found 6 entries without IDs and 2 entries that are acceptable afterglow candidates for 913302_g890.
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 14 in the list of sources is a candidate afterglow for 913302_g890 with genie
ra=107.44312 (07:09:46.35) dec=-29.57253 (-29:34:21.1) +/- 0.6" mag=16.39+/-0.14
dist=92.3 REFID=18 major=1.1 minor=1.0 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 45.2 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 32 in the list of sources is a candidate afterglow for 913302_g890 with genie
ra=107.47008 (07:09:52.82) dec=-29.57213 (-29:34:19.7) +/- 0.7" mag=19.40+/-0.17
dist=73.5 REFID=19 major=2.6 minor=1.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 78.6 arc sec from the BAT position.
Found 5 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
107.4650 -29.5743 17.8 -1 USNO-B1 20.63 18.70 19.56
107.4644 -29.5713 18.1 -1 USNO-B1 18.12 17.19 17.61
107.4681 -29.5678 16.6 -1 USNO-B1 12.16 12.31 12.24
107.4715 -29.5686 13.5 -1 USNO-B1 17.95 16.93 17.39
107.4731 -29.5699 12.4 -1 USNO-B1 19.76 19.52 19.63
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 2.6
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 85926.789 counts in the bkg source region of 5089.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 16.885 counts/pixel (5-sig UL in 4" is 19.82 mag) for 913302_g890
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 < 19.81
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.37, 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_584110541_190706d15h31m23s388067usUT_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(107.4469,-29.5794,45")
fk5;-circle(107.450005301004,-29.5865396966401,6")
fk5;-circle(107.449433826773,-29.5794215927549,6")
fk5;-circle(107.449224771957,-29.5890781558971,6")
fk5;-circle(107.442336195357,-29.5855315314939,6")
fk5;-circle(107.452099167828,-29.577286376999,6")
fk5;-circle(107.446384788066,-29.5921875719985,6")
fk5;-circle(107.439278276612,-29.5808355309114,6")
fk5;-circle(107.457814258124,-29.575489192457,6")
fk5;-circle(107.44519046781,-29.5720662170133,6")
fk5;-circle(107.443118787931,-29.5725258518053,6")
fk5;-circle(107.434652488104,-29.577150690905,6")
fk5;-circle(107.452465966836,-29.5680310707807,6")
fk5;-circle(107.45538098383,-29.5684818649214,6")
fk5;-circle(107.435950633152,-29.5701448848103,6")
image paragraph message for exposure 3 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 868 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 190706d15h31m26s940716usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=913302
-expid=584110541 -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 584110541.2742 or about 2019:187:12:55:36 UT
Found 2734 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 25% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 15 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 43 source(s) in Genie image catalog. Found 6 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.37 mag. Found 290 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
27% of the Genie image region.
Genie image analysis:
Found 85926.8 counts in the large background region of 5089.0 pixels or a rate
of 16.885 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 19.82 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.66 mag. The closest srclist
source has ra= 107.4735 dec= -29.5503 mag=17.51 sep=36.88". The closest Genie
source has ra= 107.4505 dec= -29.5582 mag=15.66 sep=41.07".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the image data with mag < 19.81 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=107.44312
(07:09:46.35), DEC=-29.57253 (-29:34:21.1) (J2000). It has a mag of 16.39. 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 868 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 = 107.44312
DEC(J2000) = -29:34:21.1 = -29.57253
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=107.44296
(07:09:46.31), DEC=-29.57248 (-29:34:20.9) (J2000). It has a mag of 17.22. It
is 45.6" 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 868 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 07:09:46.31 = 107.44296
DEC(J2000) = -29:34:20.9 = -29.57248
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 17.22 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?
584110541 867 WHITE srclist found no candidates.
584110541 867 WHITE image found no candidates.
List afterglow candidates for other finding charts.
584109773 99 WHITE srclist found no candidates.
584109773 99 WHITE image found no candidates.
584109985 311 U srclist found no candidates.
584109985 311 U image found no candidates.
------- Tokens for Quick GCN -------