image overlap message for exposure 1 of trigger 1000613
uvot_overlap.pl vrs. 2010-12-20b fem started at 201017d14h14m04s313008usUT
The observation of trigger 1000613 started 2020-10-17T09:48:43.4
Examining file ./1000613_g131_uvot_sky_image.fits
The exposure ID is 624620923
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (36.6303,66.6796) with a roll angle of 16.3
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 (36.6330,66.6730) with a radius of 3.000 arc min
This is 0.400 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 (36.6201,66.6788) with a radius of 0.043 arc min
This is 0.248 arc min from the center of the uvot region
The area of the XRT error circle is 0.006 sq. arc min
The UVOT/XRT overlap is 0.006 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1000613
find_uvot_ag.pl vrs. 2017-02-17 fem started at 201017d14h14m09s355958usUT
Observation start time is 2020-10-17T09:48:43.4
Examining file ./1000613_g131_uvot_catalog_image.fits
The exposure ID is 624620923
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 14 detected source(s) for 1000613_g131
Aspect correction adds 0.00226 degrees (0.542 sec of time = 3.22 arc sec) to RA
Aspect correction adds 0.00132 degrees ( 4.76 arcsec) to Dec
Total aspect correction is 5.75 arcsec
Star catalogs centered at 36.6237 , 66.6750 with radius 2.53 arc min.
n_usno: 161 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 10 matched entries is 0.891" for 1000613_g131
Mean and std. dev of mag. difference (MAG_DELTA) are 1.147 and 0.509 for 1000613_g131
Found 4 entries without IDs and 4 entries that are acceptable afterglow candidates for 1000613_g131.
Acceptable entries have no ID, XRT distances < 6.5", 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=36.6330 (02:26:31.92) DEC=66.6730 (+66:40:22.8)
XRT distances are from RA=36.6201 (02:26:28.82) DEC=66.6788 (+66:40:43.6)
*** WARNING 28 per cent of entries have no IDs.
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1000613_g131 with genie
ra=36.64397 (02:26:34.55) dec=66.66058 (+66:39:38.1) +/- 0.6" mag=19.01+/-0.15
dist=73.9 REFID=13 major=0.9 minor=0.8 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 47.4 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
36.6443 66.6638 11.8 -1 USNO-B1 19.71 19.05 19.34
36.6414 66.6607 3.7 -1 USNO-B1 19.61 15.73 17.45
36.6519 66.6633 15.1 -1 USNO-B1 99.99 19.49 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 4 in the list of sources is a candidate afterglow for 1000613_g131 with genie
ra=36.65240 (02:26:36.58) dec=66.65639 (+66:39:23.0) +/- 0.7" mag=19.52+/-0.16
dist=92.8 REFID=14 major=0.8 minor=0.5 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 65.9 arc sec from the BAT position.
This source is near the edge of image (1.000)
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
36.6559 66.6568 5.1 -1 USNO-B1 18.00 99.99 99.99 *
36.6548 66.6565 3.4 -1 USNO-B1 17.76 14.49 15.94 *
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 10 in the list of sources is a candidate afterglow for 1000613_g131 with genie
ra=36.60954 (02:26:26.29) dec=66.69607 (+66:41:45.9) +/- 0.6" mag=18.58+/-0.15
dist=64.0 REFID=4 major=0.9 minor=0.9 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 89.5 arc sec from the BAT position.
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
36.6197 66.6928 18.8 -1 USNO-B1 20.71 19.49 20.03
36.6154 66.6943 10.4 -1 USNO-B1 20.69 19.48 20.02
36.6073 66.6963 3.4 -1 USNO-B1 17.62 15.43 16.40 *
36.6055 66.6973 7.2 -1 USNO-B1 20.92 18.52 19.59
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 12 in the list of sources is a candidate afterglow for 1000613_g131 with genie
ra=36.56806 (02:26:16.33) dec=66.68063 (+66:40:50.3) +/- 1.1" mag=21.16+/-0.32
dist=74.4 REFID=9 major=0.9 minor=0.6 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 96.6 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
36.5766 66.6815 12.5 -1 USNO-B1 20.95 18.72 19.71
36.5683 66.6824 6.3 -1 USNO-B1 20.73 18.08 19.26
36.5656 66.6809 3.6 -1 USNO-B1 19.89 17.82 18.74
36.5639 66.6790 8.4 -1 USNO-B1 20.17 19.05 19.55
36.5640 66.6795 7.2 -1 USNO-B1 20.95 18.52 19.60
*** If XRT position is correct, then this is NOT the afterglow
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 49847.805 counts in the bkg source region of 6018.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 8.283 counts/pixel (5-sig UL in 4" is 20.20 mag) for 1000613_g131
There are 1707.7301 counts in the xrt source region of 199.00000 pixels.
Rate in xrt region with 8 arcsec radius is 8.582 counts/pixel for 1000613_g131
There are 9908.6934 counts in the xrt_bkg source region of 1194.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 8.299 counts/pixel (5-sig UL in 4" is 20.20 mag) for 1000613_g131
There are 1 candidate(s) outside XRT error circle with mag < 20.20
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.76, XRT distances < 6.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1000613_624620923_201017d14h14m09s355958usUT_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(36.6303,66.6796,45")
fk5;-circle(36.6154762782051,66.6753073107138,6")
fk5;-circle(36.6339498830261,66.6861375226454,6")
fk5;-circle(36.6406699379284,66.6919674833883,6")
fk5;-circle(36.6342363965033,66.6927085788438,6")
Region file: 1000613_624620923_201017d14h14m09s355958usUT_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(36.62008,66.67878,8")
Region file: 1000613_624620923_201017d14h14m09s355958usUT_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(36.62008,66.67878,25")
fk5;-circle(36.62008,66.67878,15")
fk5;-circle(36.6154762782051,66.6753073107138,6")
image paragraph message for exposure 1 of trigger 1000613
------ Start for Possible Stand-alone Circular ----
In response to GRB201017 (Swift/BAT trigger 1000613) at 09:46:31 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 106 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 100% of
the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag.
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
1.20.
------- notes for trigger 1000613 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 201017d14h14m13s713855usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1000613
-expid=624620923 -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/1000613/
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 624620923.36366 or about 2020:291:09:48:38 UT
Found 1129 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 19% of the srclist region. Found 127 sources in
srclist catalog. Found 79 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 14 source(s) in Genie image catalog. Found 4 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.76 mag. Found 157 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
17% of the Genie image region.
Genie image analysis:
Found 49847.8 counts in the large background region of 6018.0 pixels or a rate
of 8.283 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 20.20 mag. for a
4-arcsec aperture.
Found 1707.7 counts in the XRT position region of 199.0 pixels or a rate of
8.581 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.375 +/- 0.297 (1-sigma) cps or
20.84 mag and a range from 20.21 to 22.55 mag. The 3-sigma UL at the XRT
position is 1.266 cps or 19.52 mag. The closest srclist source has ra= 36.6344
dec= 66.6923 mag=19.40 sep=52.91". The closest Genie source has ra= 36.6155
dec= 66.6753 mag=18.88 sep=14.12".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the image data with mag < 20.20 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=36.64397
(02:26:34.55), DEC=66.66058 (+66:39:38.1) (J2000). It has a mag of 19.01. It is
47.4" 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 106 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 02:26:34.55 = 36.64397
DEC(J2000) = +66:39:38.1 = 66.66058
with a 90%-confidence error radius of about 0.64 arc sec. The estimated
magnitude is 19.01 with a 1-sigma error of about 0.15. No correction has been
made for the expected extinction corresponding to E(B-V) of 1.20.
This paragraph is only useful if the XRT position is grossly wrong. There are 5
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=36.74293
(02:26:58.30), DEC=66.68468 (+66:41:04.8) (J2000). It has a mag of 17.09. It is
162.2" 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 106 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 02:26:58.30 = 36.74293
DEC(J2000) = +66:41:04.8 = 66.68468
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 17.09 with a 1-sigma error of about 0.35. No correction has been
made for the expected extinction corresponding to E(B-V) of 1.20.
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?
624620923 105 WHITE srclist found no candidates.
624620923 105 WHITE image found no candidates.
List afterglow candidates for other finding charts.
624621081 263 U srclist found no candidates.
624621081 263 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 66.67878
GRB_ERROR: 6.5
GRB_RA: 36.62008
IMAGE_START_TIME: 09:48:38
MAGNITUDE: 19.5
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT