srclist overlap message for exposure 2 of trigger 911609
uvot_overlap.pl vrs. 2010-12-20b fem started at 190627d18h13m50s924868usUT
The observation of trigger 911609 started 2019-06-27T12:14:46.8
Examining file ./911609_g3374_uvot_sky_srclist.fits
The exposure ID is 583330486
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (244.7809,-5.3667) with a roll angle of 304.1
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (244.8300,-5.2920) with a radius of 3.000 arc min
This is 5.360 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 8.24 sq. arc min or 0.29 of the BAT error circle
The XRT error circle is centered at (244.8280,-5.2890) with a radius of 0.028 arc min
This is 5.448 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
srclist afterglow message for exposure 2 of trigger 911609
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190627d18h13m58s443554usUT
Observation start time is 2019-06-27T12:14:46.8
Examining file ./911609_g3374_uvot_catalog_srclist.fits
The exposure ID is 583330486
The exposure is 149.813 sec.
The bin size is 2 pixels
The filter is WHITE
There are 55 detected source(s) for 911609_g3374
Aspect correction adds -0.00053 degrees (-0.127 sec of time = -1.90 arc sec) to RA
Aspect correction adds 0.00132 degrees ( 4.74 arcsec) to Dec
Total aspect correction is 5.11 arcsec
Star catalogs centered at 244.7743 , -5.3822 with radius 6.64 arc min.
n_usno: 549 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 43 matched entries is 0.752" for 911609_g3374
Mean and std. dev of mag. difference (MAG_DELTA) are 1.467 and 0.506 for 911609_g3374
Found 12 entries without IDs and 2 entries that are acceptable afterglow candidates for 911609_g3374.
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=244.8300 (16:19:19.20) DEC=-5.2920 (-05:17:31.2)
XRT distances are from RA=244.8280 (16:19:18.72) DEC=-5.2890 (-05:17:20.4)
-----------------
Entry 40 in the list of sources is a candidate afterglow for 911609_g3374 with 3x3 stamp
ra=244.81776 (16:19:16.26) dec=-5.31991 (-05:19:11.7) +/- 1.1" mag=20.22+/-0.35
dist=117.2 REFID=55
*** The position of this source is inconsistent with the XRT position.
The position is 109.6 arc sec from the BAT position.
src: 40 distr. of nearby unmatched sources: 0 0 0 0 0
Found 1 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
244.8219 -5.3203 14.9 -1 USNO-B1 20.56 19.32 19.87
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 53 in the list of sources is a candidate afterglow for 911609_g3374 with 5x5 stamp
ra=244.79771 (16:19:11.45) dec=-5.29110 (-05:17:28.0) +/- 1.1" mag=19.29+/-0.35
dist=108.8 REFID=33
*** The position of this source is inconsistent with the XRT position.
The position is 115.8 arc sec from the BAT position.
src: 53 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
244.7952 -5.2958 19.0 -1 USNO-B1 20.13 19.40 19.73
244.7972 -5.2916 2.4 -1 USNO-B1 18.38 17.30 17.78 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 2 of trigger 911609
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB190627 (Swift/BAT trigger 911609) at 11:18:31 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 3352 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 none of the XRT error circle. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.18.
------- notes for trigger 911609 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190627d18h14m00s954455usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=911609
-expid=583330486 -meonly -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/911609/
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 583330486.79918 or about 2019:178:12:14:41 UT
Found 545 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 8% of the srclist region. Found 55 sources in
srclist catalog. Found 12 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 11 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 20.44 mag. Found 68 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
9% of the Genie image region. The XRT position was OUTSIDE the star catalog
search region.
Genie image analysis:
Found 91618.7 counts in the large background region of 6166.0 pixels or a rate
of 14.859 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 19.89 mag. for a
4-arcsec aperture. The closest srclist source has ra= 244.8036 dec= -5.3034
mag=18.52 sep=101.76". The closest Genie source has ra= 244.7889 dec= -5.3480
mag=18.44 sep=254.48".
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?
583330486 3351 WHITE srclist found no candidates.
583330486 3351 WHITE image found no candidates.
List afterglow candidates for other finding charts.
583327248 113 ? srclist data are not available.
583327248 113 WHITE image found no candidates.
------- Tokens for Quick GCN -------