srclist overlap message for exposure 1 of trigger 965638
uvot_overlap.pl vrs. 2010-12-20b fem started at 200410d07h19m38s267992usUT
The observation of trigger 965638 started 2020-04-10T02:27:19.5
Examining file ./965638_g128_uvot_sky_srclist.fits
The exposure ID is 608178439
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (299.6453,51.7665) with a roll angle of 93.2
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 (299.6370,51.7630) with a radius of 3.000 arc min
This is 0.373 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 (299.6459,51.7808) with a radius of 0.032 arc min
This is 0.859 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 1 of trigger 965638
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200410d07h19m43s237181usUT
Observation start time is 2020-04-10T02:27:19.5
Examining file ./965638_g128_uvot_catalog_srclist.fits
The exposure ID is 608178439
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 965638_g128
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 965638_g128 has mag 19.28
Aspect correction adds 0.00232 degrees (0.558 sec of time = 5.17 arc sec) to RA
Aspect correction adds -0.00036 degrees (-1.30 arcsec) to Dec
Total aspect correction is 5.33 arcsec
Star catalogs centered at 299.6504 , 51.7687 with radius 6.01 arc min.
n_usno: 1158 n_gsc: 0
*** WARNING -- bright star catalog has 9 entries brighter than 12 mag
The brightest has mag 9.33636
RA DEC Mag Color
bright star 0: 299.70880 (19:58:50.11) 51.77081 (+51:46:14.9) 11.12 USNO-V
bright star 1: 299.58449 (19:58:20.28) 51.74991 (+51:44:59.7) 11.71 USNO-V
bright star 2: 299.69499 (19:58:46.80) 51.80669 (+51:48:24.1) 11.67 USNO-V
bright star 3: 299.55699 (19:58:13.68) 51.78192 (+51:46:54.9) 11.74 USNO-V
bright star 4: 299.71385 (19:58:51.32) 51.71974 (+51:43:11.1) 11.99 USNO-V
bright star 5: 299.69835 (19:58:47.60) 51.71152 (+51:42:41.5) 11.11 USNO-V
bright star 6: 299.70179 (19:58:48.43) 51.71208 (+51:42:43.5) 9.34 USNO-V
bright star 7: 299.70518 (19:58:49.24) 51.71214 (+51:42:43.7) 10.27 USNO-V
bright star 8: 299.60359 (19:58:24.86) 51.70079 (+51:42:02.9) 10.42 USNO-V
Mean distance difference (CAT_DELTA) for 184 matched entries is 0.737" for 965638_g128
Mean and std. dev of mag. difference (MAG_DELTA) are 1.320 and 0.550 for 965638_g128
Found 12 entries without IDs and 2 entries that are acceptable afterglow candidates for 965638_g128.
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.
9 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=299.6370 (19:58:32.88) DEC=51.7630 (+51:45:46.8)
XRT distances are from RA=299.6459 (19:58:35.02) DEC=51.7808 (+51:46:50.8)
-----------------
Entry 56 in the list of sources is a candidate afterglow for 965638_g128 with 1x1 stamp
ra=299.59742 (19:58:23.38) dec=51.79710 (+51:47:49.6) +/- 1.1" mag=19.09+/-0.35
dist=122.9 REFID=181
*** The position of this source is inconsistent with the XRT position.
The position is 151.1 arc sec from the BAT position.
src: 56 distr. of nearby unmatched sources: 0 0 0 0 0
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
299.5985 51.7969 2.4 -1 USNO-B1 20.15 19.87 19.99 *
299.5966 51.7968 2.1 -1 USNO-B1 18.76 17.41 18.00 *
299.5950 51.7967 5.7 -1 USNO-B1 18.33 16.88 17.53
299.6017 51.8017 19.0 -1 USNO-B1 19.34 18.39 18.81
299.6010 51.8018 18.7 -1 USNO-B1 18.86 17.14 17.90
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 63 in the list of sources is a candidate afterglow for 965638_g128 with 1x1 stamp
ra=299.59423 (19:58:22.62) dec=51.79681 (+51:47:48.5) +/- 1.1" mag=18.83+/-0.35
dist=128.7 REFID=168
*** The position of this source is inconsistent with the XRT position.
The position is 154.5 arc sec from the BAT position.
src: 63 srclist_match has ID
src: 63 distr. of nearby unmatched sources: 0 1 0 0 0
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
299.5985 51.7969 9.5 -1 USNO-B1 20.15 19.87 19.99
299.5918 51.7917 19.3 -1 USNO-B1 16.55 14.79 15.57
299.5966 51.7968 5.2 -1 USNO-B1 18.76 17.41 18.00
299.5950 51.7967 1.7 -1 USNO-B1 18.33 16.88 17.53 *
299.5908 51.8019 19.9 -1 USNO-B1 19.42 19.76 19.61
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 2 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
299.6478 51.7809 4.2 -1 USNO-B1 20.05 17.87 18.84
299.6440 51.7822 6.7 -1 USNO-B1 18.92 17.54 18.15
The closest star is 4.21" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=299.64433 (19:58:34.64) dec=51.78225 (+51:46:56.1) +/- 1.1" mag=18.93+/-0.35 dist=6.4 REFID=167
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 19.22, 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 1 of trigger 965638
SRCLIST PROBLEM: srclist filled telemetry buffer
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 GRB200410 (Swift/BAT trigger 965638) at 02:25:10 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 104 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
0.15.
------- notes for trigger 965638 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200410d07h19m47s672858usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=965638
-expid=608178439 -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/965638/
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 608178439.46486 or about 2020:101:02:27:14 UT
Found 1154 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 22% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. 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 39 source(s) in Genie image catalog. 2 source(s) are within 10.0" of the
xrt position. Found 3 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.74 mag. Found 188 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 20% of the Genie image region.
Genie image analysis:
Found 41325.7 counts in the large background region of 4855.0 pixels or a rate
of 8.512 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 20.19 mag. for a
4-arcsec aperture.
Found 2635.7 counts in the XRT position region of 198.0 pixels or a rate of
13.312 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 6.192 +/- 0.360 (1-sigma) cps or
17.80 mag and a range from 17.74 to 17.87 mag. The 3-sigma UL at the XRT
position is 7.270 cps or 17.63 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 19.28 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 299.6443 dec= 51.7822 mag=18.93 sep=6.36".
The closest srclist source has ra= 299.6443 dec= 51.7822 mag=18.93 sep=6.36".
Found 2 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 299.6472 dec= 51.7814 mag=18.71 sep=3.52". The closest Genie
source has ra= 299.6472 dec= 51.7814 mag=18.71 sep=3.52".
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 150 seconds with the White filter
starting 104 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 19:58:35.32 = 299.64717
DEC(J2000) = +51:46:53.0 = 51.78138
with a 90%-confidence error radius of about 0.63 arc sec. This position is 3.52
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.71 with a 1-sigma error of about 0.15. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.15.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 104 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 19:58:34.64 = 299.64433
DEC(J2000) = +51:46:56.1 = 51.78225
with a 90%-confidence error radius of about 1.10 arc sec. This position is 6.36
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.93 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.15.
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?
608178439 103 WHITE srclist found no candidates.
608178439 103 WHITE image found no candidates.
List afterglow candidates for other finding charts.
608178651 315 U srclist found no candidates.
608178651 315 U image found no candidates.
608179206 870 WHITE srclist found no candidates.
608179206 870 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 51.78078
GRB_ERROR: 5
GRB_RA: 299.64592
IMAGE_START_TIME: 02:27:14
MAGNITUDE: 17.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT