srclist overlap message for exposure 2 of trigger 984929
uvot_overlap.pl vrs. 2010-12-20b fem started at 200729d23h19m44s160843usUT
The observation of trigger 984929 started 2020-07-29T19:43:33.6
Examining file ./984929_g327_uvot_sky_srclist.fits
The exposure ID is 617744613
The exposure time is undefined.
The filter is U.
The uvot region is centered at (184.3701,45.5811) with a roll angle of 257.8
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (184.3750,45.5820) with a radius of 3.000 arc min
This is 0.211 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 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (184.3762,45.5947) with a radius of 0.028 arc min
This is 0.856 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 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 984929
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200729d23h19m54s807689usUT
Observation start time is 2020-07-29T19:43:33.6
Examining file ./984929_g327_uvot_catalog_srclist.fits
The exposure ID is 617744613
The exposure is 249.924 sec.
The bin size is 2 pixels
The filter is U
There are 45 detected source(s) for 984929_g327
Aspect correction adds -0.00210 degrees (-0.504 sec of time = -5.29 arc sec) to RA
Aspect correction adds 0.00075 degrees ( 2.70 arcsec) to Dec
Total aspect correction is 5.94 arcsec
Star catalogs centered at 184.3725 , 45.5703 with radius 7.83 arc min.
n_usno: 512 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.73664
RA DEC Mag Color
bright star 0: 184.37590 (12:17:30.22) 45.61731 (+45:37:02.3) 10.93 USNO-V
bright star 1: 184.37630 (12:17:30.31) 45.62069 (+45:37:14.5) 10.74 USNO-V
Mean distance difference (CAT_DELTA) for 27 matched entries is 0.768" for 984929_g327
Mean and std. dev of mag. difference (MAG_DELTA) are 1.395 and 1.618 for 984929_g327
Found 20 entries without IDs and 8 entries that are acceptable afterglow candidates for 984929_g327.
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.
8 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=184.3750 (12:17:30.00) DEC=45.5820 (+45:34:55.2)
XRT distances are from RA=184.3762 (12:17:30.30) DEC=45.5947 (+45:35:41.1)
*** WARNING 44 per cent of entries have no IDs.
-----------------
Entry 3 in the list of sources is a candidate afterglow for 984929_g327 with 5x5 stamp
ra=184.36250 (12:17:27.00) dec=45.59375 (+45:35:37.5) +/- 1.1" mag=19.32+/-0.35
dist=34.8 REFID=39
*** The position of this source is inconsistent with the XRT position.
The position is 52.7 arc sec from the BAT position.
src: 3 distr. of nearby unmatched sources: 0 0 0 0 1
Found 5 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
184.3630 45.5891 16.8 -1 USNO-B1 17.89 17.40 17.62
184.3630 45.5894 15.6 -1 USNO-B1 17.84 18.13 18.00
184.3630 45.5898 14.3 -1 USNO-B1 17.20 19.09 18.25
184.3633 45.5905 12.0 -1 USNO-B1 20.42 18.99 19.62
184.3610 45.5904 12.8 -1 USNO-B1 19.27 19.09 19.17
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 4 in the list of sources is a candidate afterglow for 984929_g327 with 5x5 stamp
ra=184.38407 (12:17:32.18) dec=45.60000 (+45:36:00.0) +/- 1.1" mag=18.63+/-0.35
dist=27.3 REFID=19
*** The position of this source is inconsistent with the XRT position.
The position is 68.7 arc sec from the BAT position.
src: 4 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 7 in the list of sources is a candidate afterglow for 984929_g327 with 5x5 stamp
ra=184.35516 (12:17:25.24) dec=45.59804 (+45:35:52.9) +/- 1.1" mag=19.05+/-0.35
dist=54.4 REFID=33
*** The position of this source is inconsistent with the XRT position.
The position is 76.4 arc sec from the BAT position.
src: 7 distr. of nearby unmatched sources: 0 0 0 0 1
Found 3 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
184.3555 45.5970 3.8 -1 USNO-B1 19.42 18.84 19.10 *
184.3555 45.5974 2.7 -1 USNO-B1 16.97 16.86 16.91 *
184.3553 45.6006 9.4 -1 USNO-B1 17.14 16.35 16.70
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 10 in the list of sources is a candidate afterglow for 984929_g327 with 5x5 stamp
ra=184.37792 (12:17:30.70) dec=45.61005 (+45:36:36.2) +/- 1.1" mag=19.18+/-0.35
dist=55.2 REFID=42
*** The position of this source is inconsistent with the XRT position.
The position is 101.2 arc sec from the BAT position.
src: 10 distr. of nearby unmatched sources: 0 0 0 1 2
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 19 in the list of sources is a candidate afterglow for 984929_g327 with 5x5 stamp
ra=184.36492 (12:17:27.58) dec=45.62047 (+45:37:13.7) +/- 1.1" mag=19.05+/-0.35
dist=96.9 REFID=34
*** The position of this source is inconsistent with the XRT position.
The position is 140.8 arc sec from the BAT position.
src: 19 distr. of nearby unmatched sources: 1 0 1 1 1
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
184.3640 45.6201 2.7 -1 USNO-B1 19.08 13.70 16.09 *
184.3613 45.6221 10.8 -1 USNO-B1 15.22 18.39 16.98
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 20 in the list of sources is a candidate afterglow for 984929_g327 with 5x5 stamp
ra=184.34672 (12:17:23.21) dec=45.61622 (+45:36:58.4) +/- 1.1" mag=18.87+/-0.35
dist=107.3 REFID=29
*** The position of this source is inconsistent with the XRT position.
The position is 142.3 arc sec from the BAT position.
src: 20 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
184.3477 45.6165 2.6 -1 USNO-B1 18.55 18.67 18.62 *
184.3472 45.6167 2.0 -1 USNO-B1 17.78 17.30 17.52 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 28 in the list of sources is a candidate afterglow for 984929_g327 with 5x5 stamp
ra=184.39686 (12:17:35.25) dec=45.63042 (+45:37:49.5) +/- 1.1" mag=19.20+/-0.35
dist=138.5 REFID=40
*** The position of this source is inconsistent with the XRT position.
The position is 182.8 arc sec from the BAT position.
src: 28 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
184.4030 45.6296 15.7 -1 USNO-B1 19.26 19.24 19.25
184.3962 45.6313 3.7 -1 USNO-B1 19.88 99.99 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 31 in the list of sources is a candidate afterglow for 984929_g327 with 3x3 stamp
ra=184.37767 (12:17:30.64) dec=45.63561 (+45:38:08.2) +/- 1.1" mag=19.29+/-0.35
dist=147.1 REFID=44
*** The position of this source is inconsistent with the XRT position.
The position is 193.1 arc sec from the BAT position.
src: 31 distr. of nearby unmatched sources: 0 0 0 0 1
Found 3 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
184.3753 45.6378 10.0 -1 USNO-B1 18.94 18.33 18.60
184.3764 45.6390 12.6 -1 USNO-B1 18.51 18.42 18.46
184.3755 45.6393 14.5 -1 USNO-B1 18.75 17.06 17.81
*** 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:
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.12, 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 984929
2 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB200729 (Swift/BAT trigger 984929) at 19:38:05 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
303 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 19.2 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 18.0 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.01.
------- notes for trigger 984929 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200729d23h19m57s344175usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=984929
-expid=617744613 -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/984929/
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 617744613.62716 or about 2020:211:19:43:28 UT
Found 508 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 45 sources in
srclist catalog. Found 20 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
Found 10 source(s) in Genie image catalog. 2 source(s) are within 10.0" of the
xrt position. 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
20.10 mag. Found 67 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 8% of the Genie image region.
Genie image analysis:
Found 32911.2 counts in the large background region of 6083.0 pixels or a rate
of 5.410 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 19.59 mag. for a
4-arcsec aperture.
Found 1488.8 counts in the XRT position region of 200.0 pixels or a rate of
7.444 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is 1.627 +/- 0.156 (1-sigma) cps or
17.85 mag and a range from 17.75 to 17.96 mag. The 3-sigma UL at the XRT
position is 2.095 cps or 17.58 mag. The closest srclist source has ra= 184.3727
dec= 45.5889 mag=16.69 sep=22.82".
Found 2 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 184.3772 dec= 45.5932 mag=20.24 sep=6.08". The closest Genie
source has ra= 184.3772 dec= 45.5932 mag=20.24 sep=6.08".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 250 seconds with the U filter starting
303 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 12:17:30.52 = 184.37717
DEC(J2000) = +45:35:35.5 = 45.59319
with a 90%-confidence error radius of about 1.24 arc sec. This position is 6.08
arc sec. from the center of the XRT error circle. The estimated magnitude is
20.24 with a 1-sigma error of about 0.36. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.01.
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?
617744613 302 U srclist found no candidates.
617744613 302 U image found no candidates.
List afterglow candidates for other finding charts.
617744455 144 WHITE srclist found no candidates.
617744455 144 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 45.59475
GRB_ERROR: 5
GRB_RA: 184.37625
IMAGE_START_TIME: 19:43:28
MAGNITUDE: 17.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT