image overlap message for exposure 1 of trigger 1116441
uvot_overlap.pl vrs. 2010-12-20b fem started at 220716d02h30m02s707299usUT
The observation of trigger 1116441 started 2022-07-15T22:26:54.5
Examining file ./1116441_g131_uvot_sky_image.fits
The exposure ID is 679616814
The exposure time is 149.868 (seconds)
The filter is WHITE.
*** Warning -- found 24450 null pixels in the image.
The uvot region is centered at (254.8816,-33.5973) with a roll angle of 261.8
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 (254.8890,-33.5970) with a radius of 3.000 arc min
This is 0.369 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 at most 4.92 sq. arc min or 0.17 of the BAT error circle
The XRT error circle is centered at (254.8753,-33.5977) with a radius of 0.042 arc min
This is 0.315 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 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1116441
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220716d02h30m07s809193usUT
Observation start time is 2022-07-15T22:26:54.5
Examining file ./1116441_g131_uvot_catalog_image.fits
The exposure ID is 679616814
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 6 detected source(s) for 1116441_g131
Aspect correction adds -0.00107 degrees (-0.256 sec of time = -3.19 arc sec) to RA
Aspect correction adds -0.00033 degrees (-1.20 arcsec) to Dec
Total aspect correction is 3.41 arcsec
Star catalogs centered at 254.8741 , -33.6082 with radius 2.42 arc min.
n_usno: 878 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.395
RA DEC Mag Color
bright star 0: 254.89257 (16:59:34.22) -33.59911 (-33:35:56.8) 11.39 USNO-R
bright star 1: 254.84989 (16:59:23.97) -33.61463 (-33:36:52.7) 11.95 USNO-R
Mean distance difference (CAT_DELTA) for 1 matched entries is 1.166" for 1116441_g131
Mean and std. dev of mag. difference (MAG_DELTA) are -0.864 and 0.000 for 1116441_g131
Found 5 entries without IDs and 5 entries that are acceptable afterglow candidates for 1116441_g131.
Acceptable entries have no ID, XRT distances < 6.25", 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=254.8890 (16:59:33.36) DEC=-33.5970 (-33:35:49.2)
XRT distances are from RA=254.8753 (16:59:30.08) DEC=-33.5977 (-33:35:51.9)
*** WARNING 83 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1116441_g131 with genie
ra=254.87906 (16:59:30.98) dec=-33.61925 (-33:37:09.3) +/- 1.1" mag=16.52+/-0.35
dist=78.2 REFID=1 major=4.2 minor=1.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 85.5 arc sec from the BAT position.
This source is near the edge of image (0.960)
Found 14 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
254.8781 -33.6141 18.7 -1 USNO-B1 18.73 19.54 19.18
254.8754 -33.6158 16.6 -1 USNO-B1 18.47 18.90 18.71
254.8787 -33.6174 6.8 -1 USNO-B1 99.99 14.34 99.99
254.8783 -33.6180 5.0 -1 USNO-B1 19.27 14.07 16.38 *
254.8789 -33.6182 3.9 -1 USNO-B1 15.20 14.24 14.67 *
254.8831 -33.6161 16.4 -1 USNO-B1 18.33 18.40 18.37
254.8801 -33.6185 4.1 -1 USNO-B1 99.99 16.50 99.99 *
254.8837 -33.6167 16.6 -1 USNO-B1 99.99 17.64 99.99
254.8816 -33.6184 8.1 -1 USNO-B1 16.94 16.74 16.83
254.8846 -33.6174 17.8 -1 USNO-B1 18.27 17.77 17.99
254.8760 -33.6213 11.9 -1 USNO-B1 16.88 14.62 15.62
254.8768 -33.6229 14.6 -1 USNO-B1 18.57 18.66 18.62
254.8811 -33.6228 14.2 -1 USNO-B1 18.62 18.52 18.56
254.8845 -33.6221 19.3 -1 USNO-B1 17.74 17.14 17.41
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1116441_g131 with genie
ra=254.87213 (16:59:29.31) dec=-33.61805 (-33:37:05.0) +/- 1.1" mag=16.84+/-0.35
dist=73.7 REFID=5 major=1.4 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 91.1 arc sec from the BAT position.
This source is near the edge of image (1.000)
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
254.8744 -33.6131 19.0 -1 USNO-B1 15.24 13.75 14.41
254.8754 -33.6158 12.9 -1 USNO-B1 18.47 18.90 18.71
254.8692 -33.6158 12.0 -1 USNO-B1 15.89 15.12 15.46
254.8787 -33.6174 19.9 -1 USNO-B1 99.99 14.34 99.99
254.8783 -33.6180 18.5 -1 USNO-B1 19.27 14.07 16.38
254.8678 -33.6173 13.2 -1 USNO-B1 19.06 19.47 19.29
254.8716 -33.6188 3.1 -1 USNO-B1 14.89 12.96 13.82 *
254.8698 -33.6205 11.1 -1 USNO-B1 17.77 15.47 16.49
254.8760 -33.6213 16.3 -1 USNO-B1 16.88 14.62 15.62
254.8664 -33.6198 18.4 -1 USNO-B1 18.83 17.66 18.18
254.8730 -33.6230 18.2 -1 USNO-B1 19.24 19.58 19.43
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1116441_g131 with genie
ra=254.86882 (16:59:28.52) dec=-33.61637 (-33:36:58.9) +/- 1.1" mag=17.10+/-0.35
dist=69.8 REFID=4 major=3.7 minor=1.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 92.3 arc sec from the BAT position.
This source is near the edge of image (0.973)
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
254.8679 -33.6116 17.3 -1 USNO-B1 13.66 12.56 13.05
254.8754 -33.6158 19.9 -1 USNO-B1 18.47 18.90 18.71
254.8692 -33.6158 2.5 -1 USNO-B1 15.89 15.12 15.46 *
254.8653 -33.6142 12.9 -1 USNO-B1 18.02 18.16 18.10
254.8678 -33.6173 4.6 -1 USNO-B1 19.06 19.47 19.29 *
254.8716 -33.6188 12.2 -1 USNO-B1 14.89 12.96 13.82
254.8631 -33.6156 17.2 -1 USNO-B1 18.30 17.25 17.72
254.8698 -33.6205 15.0 -1 USNO-B1 17.77 15.47 16.49
254.8664 -33.6198 14.5 -1 USNO-B1 18.83 17.66 18.18
254.8648 -33.6199 17.6 -1 USNO-B1 17.99 17.61 17.78
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1116441_g131 with genie
ra=254.89474 (16:59:34.74) dec=-33.62436 (-33:37:27.7) +/- 1.1" mag=17.06+/-0.35
dist=112.1 REFID=2 major=2.7 minor=1.8 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 100.0 arc sec from the BAT position.
This source is near the edge of image (0.972)
Found 12 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
254.8925 -33.6201 16.7 -1 USNO-B1 15.92 14.61 15.19
254.8892 -33.6250 16.6 -1 USNO-B1 18.33 17.79 18.03
254.8943 -33.6217 9.8 -1 USNO-B1 19.24 19.09 19.16
254.8912 -33.6251 11.0 -1 USNO-B1 99.99 20.98 99.99
254.8964 -33.6207 14.0 -1 USNO-B1 19.41 18.73 19.03
254.8947 -33.6250 2.2 -1 USNO-B1 16.80 15.71 16.19 *
254.8941 -33.6260 6.1 -1 USNO-B1 19.06 19.52 19.31
254.8992 -33.6207 18.7 -1 USNO-B1 18.35 17.54 17.90
254.8931 -33.6280 14.0 -1 USNO-B1 19.51 19.51 19.51
254.8946 -33.6278 12.4 -1 USNO-B1 18.86 18.29 18.54
254.8954 -33.6277 12.0 -1 USNO-B1 17.54 17.68 17.62
254.8973 -33.6269 12.0 -1 USNO-B1 16.10 15.10 15.54
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 4 in the list of sources is a candidate afterglow for 1116441_g131 with genie
ra=254.86296 (16:59:27.11) dec=-33.61481 (-33:36:53.3) +/- 1.1" mag=16.70+/-0.35
dist=71.7 REFID=3 major=5.0 minor=1.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 101.0 arc sec from the BAT position.
This source is near the edge of image (0.983)
Found 17 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
254.8679 -33.6116 18.7 -1 USNO-B1 13.66 12.56 13.05
254.8657 -33.6100 19.3 -1 USNO-B1 19.49 18.32 18.84
254.8692 -33.6158 19.1 -1 USNO-B1 15.89 15.12 15.46
254.8636 -33.6104 16.1 -1 USNO-B1 19.88 20.98 20.49
254.8653 -33.6142 7.4 -1 USNO-B1 18.02 18.16 18.10
254.8678 -33.6173 17.1 -1 USNO-B1 19.06 19.47 19.29
254.8611 -33.6126 9.7 -1 USNO-B1 17.38 15.88 16.55
254.8631 -33.6156 2.9 -1 USNO-B1 18.30 17.25 17.72 *
254.8615 -33.6154 4.9 -1 USNO-B1 18.82 17.76 18.23 *
254.8599 -33.6152 9.3 -1 USNO-B1 16.93 15.85 16.33
254.8582 -33.6121 17.3 -1 USNO-B1 17.02 16.89 16.95
254.8648 -33.6199 19.2 -1 USNO-B1 17.99 17.61 17.78
254.8577 -33.6117 19.4 -1 USNO-B1 99.99 16.20 99.99
254.8588 -33.6153 12.6 -1 USNO-B1 16.97 15.86 16.35
254.8640 -33.6202 19.7 -1 USNO-B1 18.67 17.95 18.27
254.8567 -33.6139 19.0 -1 USNO-B1 19.55 19.63 19.59
254.8588 -33.6188 19.0 -1 USNO-B1 99.99 18.33 99.99
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 6 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
254.8746 -33.5997 7.3 -1 USNO-B1 19.22 19.13 19.17
254.8772 -33.5991 7.4 -1 USNO-B1 19.12 17.98 18.49
254.8730 -33.5985 7.4 -1 USNO-B1 19.16 18.14 18.59
254.8724 -33.5980 8.9 -1 USNO-B1 17.38 17.66 17.54
254.8776 -33.5976 6.8 -1 USNO-B1 22.22 19.41 20.65
254.8763 -33.5968 4.4 -1 USNO-B1 18.48 18.46 18.47
The closest star is 4.38" away.
List UVOT sources within 10" of the XRT position:
There are 0.0000000 counts in the bkg source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt_bkg source region of 0.0000000 pixels.
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 19.42, XRT distances < 6.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1116441_679616814_220716d02h30m07s809193usUT_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(254.8816,-33.5973,45")
Region file: 1116441_679616814_220716d02h30m07s809193usUT_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(254.87533,-33.59775,8")
Region file: 1116441_679616814_220716d02h30m07s809193usUT_xrt_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(254.87533,-33.59775,25")
fk5;-circle(254.87533,-33.59775,15")
image paragraph message for exposure 1 of trigger 1116441
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: incomplete image, no overlap
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB220715 (Swift/BAT trigger 1116441) at 22:24:42 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 102 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. Because of the density of
catalogued stars, further analysis is required to report an upper limit for any
afterglow in the region. No correction has been made for the expected
extinction corresponding to E(B-V) of 0.525.
------- notes for trigger 1116441 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220716d02h30m11s968033usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1116441
-expid=679616814 -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/1116441/
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 679616814.48066 or about 2022:196:22:26:49 UT
Found 4390 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 108% of the srclist region. Found 190 sources
in srclist catalog. WARNING -- srclist catalog buffer filled. Found 53 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 6 source(s) in Genie image catalog. Found 5 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 19.42 mag. Found 874 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 103% of the
Genie image region. The Genie image is INCOMPLETE with 24450 null pixels.
Found no Genie image background information. The number of srclist sources
filled the available telemetry. The weakest source detected was 18.83 mag. The
closest srclist source has ra= 254.8689 dec= -33.5981 mag=18.48 sep=19.44". The
closest Genie source has ra= 254.8688 dec= -33.6164 mag=17.10 sep=69.82".
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=254.89008
(16:59:33.62), DEC=-33.61851 (-33:37:06.6) (J2000). It has a mag of 18.48. It
is 77.5" 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 102 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 16:59:33.62 = 254.89008
DEC(J2000) = -33:37:06.6 = -33.61851
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 18.48 with a 1-sigma error of about 0.35. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.525.
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?
679616814 102 WHITE srclist found no candidates.
679616814 102 WHITE image found no candidates.
List afterglow candidates for other finding charts.
679617027 315 U srclist found no candidates.
679617027 315 U image found no candidates.
------- Tokens for Quick GCN -------