image overlap message for exposure 1 of trigger 1195887
uvot_overlap.pl vrs. 2010-12-20b fem started at 231112d01h55m43s475144usUT
The observation of trigger 1195887 started 2023-11-11T14:20:36.6
Examining file ./1195887_g196_uvot_sky_image.fits
The exposure ID is 721405236
The exposure time is 237.923 (seconds)
The filter is U.
The uvot region is centered at (290.1867,52.4348) with a roll angle of 238.9
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 (290.2340,52.4470) with a radius of 3.000 arc min
This is 1.879 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 6.41 sq. arc min or 0.23 of the BAT error circle
The XRT error circle is centered at (290.1888,52.4357) with a radius of 0.038 arc min
This is 0.096 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1195887
find_uvot_ag.pl vrs. 2023-04-25a fem started at 231112d01h55m48s914163usUT
Observation start time is 2023-11-11T14:20:36.6
Examining file ./1195887_g196_uvot_catalog_image.fits
The exposure ID is 721405236
The exposure is 237.923 sec.
The bin size is 2 pixels
The filter is U
There are 19 detected source(s) for 1195887_g196
Aspect correction adds -0.00177 degrees (-0.425 sec of time = -3.88 arc sec) to RA
Aspect correction adds 0.00034 degrees ( 1.21 arcsec) to Dec
Total aspect correction is 4.07 arcsec
Star catalogs centered at 290.1898 , 52.4343 with radius 2.39 arc min.
n_usno: 163 n_gsc: 387
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.1211
RA DEC Mag Color
bright star 0: 290.17233 (19:20:41.36) 52.42382 (+52:25:25.8) 11.12 GSC-F
Mean distance difference (CAT_DELTA) for 16 matched entries is 0.314" for 1195887_g196
Mean and std. dev of mag. difference (MAG_DELTA) are 1.381 and 0.534 for 1195887_g196
Found 4 entries without IDs and 4 entries that are acceptable afterglow candidates for 1195887_g196.
Acceptable entries have no ID, XRT distances < 5.75", 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=290.2340 (19:20:56.16) DEC=52.4470 (+52:26:49.2)
XRT distances are from RA=290.1888 (19:20:45.32) DEC=52.4357 (+52:26:08.6)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1195887_g196 with genie
ra=290.18848 (19:20:45.23) dec=52.43626 (+52:26:10.5) +/- 0.6" mag=16.51+/-0.14
dist=2.1 REFID=9 major=1.2 minor=1.1 flag=0
Found 13 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
290.1838 52.4338 13.6 -1 USNO-B1 20.33 19.66 19.95
290.1811 52.4352 16.7 -1 USNO-B1 20.38 19.67 19.98
290.1806 52.4354 17.5 -1 USNO-B1 20.57 99.99 99.99
290.1879 52.4413 18.3 -1 USNO-B1 20.44 18.50 19.36
290.1838 52.4337 13.8 -1 GSC2.3 99.99 21.03 99.99
290.1838 52.4338 13.6 -1 GSC2.3 19.62 99.99 99.99
290.1837 52.4338 13.6 -1 GSC2.3 99.99 20.74 99.99
290.1838 52.4337 13.9 -1 GSC2.3 19.41 21.12 99.99
290.1814 52.4351 16.1 -1 GSC2.3 20.04 21.50 99.99
290.1879 52.4411 17.5 -1 GSC2.3 18.69 20.86 99.99
290.1880 52.4412 17.6 -1 GSC2.3 99.99 21.40 99.99
290.1878 52.4412 17.9 -1 GSC2.3 18.70 99.99 99.99
290.1878 52.4414 18.6 -1 GSC2.3 99.99 20.79 99.99
uvot_check_outside found 10 of 10 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
-----------------
Entry 5 in the list of sources is a candidate afterglow for 1195887_g196 with genie
ra=290.16576 (19:20:39.78) dec=52.44651 (+52:26:47.4) +/- 0.7" mag=18.23+/-0.16
dist=63.8 REFID=5 major=5.4 minor=4.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 149.7 arc sec from the BAT position.
Found 11 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
290.1677 52.4419 17.0 -1 USNO-B1 14.62 13.80 14.17
290.1715 52.4494 16.3 -1 USNO-B1 19.59 17.67 18.52
290.1706 52.4506 18.3 -1 USNO-B1 19.90 18.78 19.28
290.1678 52.4418 17.5 -1 GSC2.3 99.99 15.14 99.99
290.1678 52.4418 17.5 -1 GSC2.3 13.83 14.59 14.26
290.1678 52.4419 17.3 -1 GSC2.3 99.99 15.14 99.99
290.1678 52.4419 17.3 -1 GSC2.3 14.09 99.99 99.99
290.1716 52.4493 16.4 -1 GSC2.3 17.81 19.74 18.64
290.1716 52.4494 16.5 -1 GSC2.3 99.99 20.20 99.99
290.1715 52.4494 16.4 -1 GSC2.3 18.01 99.99 99.99
290.1716 52.4495 16.7 -1 GSC2.3 99.99 19.79 99.99
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 5.4
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1195887_g196 with genie
ra=290.16289 (19:20:39.09) dec=52.44413 (+52:26:38.9) +/- 0.7" mag=18.63+/-0.17
dist=64.5 REFID=6 major=3.9 minor=3.1 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 156.4 arc sec from the BAT position.
Found 10 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
290.1677 52.4419 13.2 -1 USNO-B1 14.62 13.80 14.17
290.1591 52.4413 13.1 -1 USNO-B1 17.76 16.71 17.18
290.1678 52.4418 13.6 -1 GSC2.3 99.99 15.14 99.99
290.1678 52.4418 13.6 -1 GSC2.3 13.83 14.59 14.26
290.1678 52.4419 13.5 -1 GSC2.3 99.99 15.14 99.99
290.1678 52.4419 13.5 -1 GSC2.3 14.09 99.99 99.99
290.1592 52.4412 13.4 -1 GSC2.3 99.99 18.31 99.99
290.1591 52.4412 13.5 -1 GSC2.3 16.79 17.88 17.52
290.1591 52.4412 13.3 -1 GSC2.3 99.99 18.25 99.99
290.1591 52.4412 13.4 -1 GSC2.3 17.20 99.99 99.99
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 3.9
-----------------
Entry 9 in the list of sources is a candidate afterglow for 1195887_g196 with genie
ra=290.17686 (19:20:42.45) dec=52.45439 (+52:27:15.8) +/- 0.7" mag=19.40+/-0.20
dist=72.1 REFID=19 major=3.4 minor=2.5 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 128.1 arc sec from the BAT position.
This source is near the edge of image (0.928)
Found 6 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
290.1827 52.4515 16.4 -1 USNO-B1 20.25 18.14 19.07
290.1706 52.4506 19.2 -1 USNO-B1 19.90 18.78 19.28
290.1828 52.4514 16.8 -1 GSC2.3 18.00 20.09 18.61
290.1829 52.4514 16.9 -1 GSC2.3 99.99 20.58 99.99
290.1827 52.4514 16.6 -1 GSC2.3 99.99 20.29 99.99
290.1827 52.4515 16.6 -1 GSC2.3 18.29 99.99 99.99
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 3.4
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=290.18848 (19:20:45.23) dec=52.43626 (+52:26:10.5) +/- 0.6" mag=16.51+/-0.14 dist=2.1 REFID=9 flag=0
There are 11213.312 counts in the bkg source region of 6079.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 1.845 counts/pixel (5-sig UL in 4" is 20.08 mag) for 1195887_g196
There are 998.60144 counts in the src source region of 48.000000 pixels.
Rate in src region with 4 arcsec radius is 20.804 counts/pixel for 1195887_g196
There are 2241.4229 counts in the cand_src_bkg source region of 1248.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 1.796 counts/pixel (5-sig UL in 4" is 20.09 mag) for 1195887_g196
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 < 5.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1195887_721405236_231112d01h55m48s914163usUT_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(290.1867,52.4348,45")
fk5;-circle(290.188478481146,52.4362618617753,6")
fk5;-circle(290.178088211341,52.4293792348341,6")
fk5;-circle(290.167509975497,52.441902494571,6")
fk5;-circle(290.17235795832,52.4240186813988,6")
Region file: 1195887_721405236_231112d01h55m48s914163usUT_cand_src.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(290.188478481146,52.4362618617753,4")
Region file: 1195887_721405236_231112d01h55m48s914163usUT_cand_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(290.188478481146,52.4362618617753,25")
fk5;-circle(290.188478481146,52.4362618617753,15")
image paragraph message for exposure 1 of trigger 1195887
SRCLIST PROBLEM: access to all star catalogs failed
------ Start for Possible Stand-alone Circular ----
In response to GRB231111 (Swift/BAT trigger 1195887) at 14:17:19 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 238 seconds with the U filter starting
164 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 19:20:45.24 = 290.18848
DEC(J2000) = +52:26:10.5 = 52.43626
with a 90%-confidence error radius of about 0.62 arc sec. This position is 2.1
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.51 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.117.
------- notes for trigger 1195887 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 231112d01h55m53s118392usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1195887
-expid=721405236 -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/1195887/
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 721405236.61436 or about 2023:315:14:20:31 UT
Since the srclist star catalog filled its buffer, the sensitivity for an
afterglow may be REDUCED. The stars will eliminate afterglows from about 47%
or more of the srclist region. Found 190 sources in srclist catalog. WARNING --
srclist catalog buffer filled. Found 93 srclist source(s) without IDs. There
are 1 good candidate(s) in the srclist catalog. Good candidates must be
brighter than 18.09 mag.
Found 19 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 4 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.63 mag. Found 387 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 47% of the Genie image region.
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?
721405236 163 U 290.18825 52.43632 17.42/18.1 2.5 srclist Yes
721405236 163 U 290.18848 52.43626 16.51/20.6 2.1 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 52.43626
GRB_ERROR: 0.62
GRB_RA: 290.18848
IMAGE_START_TIME: 14:20:31
MAGNITUDE: 16.51
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT