srclist overlap message for exposure 1 of trigger 884906
uvot_overlap.pl vrs. 2010-12-20b fem started at 190121d10h21m57s100173usUT
The observation of trigger 884906 started 2019-01-21T10:09:33.4
Examining file 884906_g155_uvot_sky_srclist.fits
The exposure ID is 569758173
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (247.7540,-47.7705) with a roll angle of 78.0
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 (247.7490,-47.7730) with a radius of 3.000 arc min
This is 0.252 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 (247.8088,-47.8065) with a radius of 0.087 arc min
This is 3.092 arc min from the center of the uvot region
The area of the XRT error circle is 0.024 sq. arc min
The UVOT/XRT overlap is 0.024 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 884906
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190121d10h21m58s107254usUT
Observation start time is 2019-01-21T10:09:33.4
Examining file 884906_g155_uvot_catalog_srclist.fits
The exposure ID is 569758173
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 884906_g155
*** 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 884906_g155 has mag 18.66
Aspect correction adds -0.00187 degrees (-0.449 sec of time = -4.52 arc sec) to RA
Aspect correction adds 0.00050 degrees ( 1.79 arcsec) to Dec
Total aspect correction is 4.87 arcsec
Star catalogs centered at 247.7770 , -47.7702 with radius 6.66 arc min.
n_usno: 2748 n_gsc: 0
*** WARNING -- bright star catalog has 8 entries brighter than 12 mag
The brightest has mag 10.952
RA DEC Mag Color
bright star 0: 247.76332 (16:31:03.20) -47.79031 (-47:47:25.1) 11.64 USNO-V
bright star 1: 247.75635 (16:31:01.52) -47.75292 (-47:45:10.5) 11.55 USNO-V
bright star 2: 247.72314 (16:30:53.55) -47.71556 (-47:42:56.0) 11.78 USNO-V
bright star 3: 247.69070 (16:30:45.77) -47.82853 (-47:49:42.7) 11.89 USNO-V
bright star 4: 247.77196 (16:31:05.27) -47.67917 (-47:40:45.0) 11.96 USNO-V
bright star 5: 247.91489 (16:31:39.57) -47.80216 (-47:48:07.8) 10.95 USNO-V
bright star 6: 247.88286 (16:31:31.89) -47.70052 (-47:42:01.9) 11.10 USNO-V
bright star 7: 247.86193 (16:31:26.86) -47.68190 (-47:40:54.8) 11.90 USNO-V
Mean distance difference (CAT_DELTA) for 182 matched entries is 0.904" for 884906_g155
Mean and std. dev of mag. difference (MAG_DELTA) are 2.402 and 0.644 for 884906_g155
Found 22 entries without IDs and 10 entries that are acceptable afterglow candidates for 884906_g155.
Acceptable entries have no ID, XRT distances < 13", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
6 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=247.7490 (16:30:59.76) DEC=-47.7730 (-47:46:22.8)
XRT distances are from RA=247.8088 (16:31:14.11) DEC=-47.8065 (-47:48:23.4)
-----------------
Entry 21 in the list of sources is a candidate afterglow for 884906_g155 with 3x3 stamp
ra=247.77212 (16:31:05.31) dec=-47.81010 (-47:48:36.4) +/- 1.1" mag=18.34+/-0.35
dist=89.6 REFID=92
*** The position of this source is inconsistent with the XRT position.
The position is 144.8 arc sec from the BAT position.
src: 21 distr. of nearby unmatched sources: 0 0 0 0 0
Found 12 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
247.7726 -47.8060 14.9 -1 USNO-B1 16.41 16.09 16.23
247.7756 -47.8067 14.9 -1 USNO-B1 17.99 17.20 17.55
247.7706 -47.8069 12.2 -1 USNO-B1 17.28 15.16 16.10
247.7660 -47.8076 17.4 -1 USNO-B1 17.88 16.85 17.31
247.7715 -47.8106 2.4 -1 USNO-B1 16.99 15.43 16.12 *
247.7781 -47.8109 14.7 -1 USNO-B1 99.99 17.23 99.99
247.7787 -47.8119 17.3 -1 USNO-B1 18.80 16.04 17.27
247.7695 -47.8119 9.1 -1 USNO-B1 19.02 17.45 18.15
247.7714 -47.8121 7.5 -1 USNO-B1 19.58 17.09 18.20
247.7684 -47.8120 11.2 -1 USNO-B1 18.21 15.34 16.62
247.7730 -47.8138 13.4 -1 USNO-B1 20.63 17.32 18.79
247.7706 -47.8155 19.7 -1 USNO-B1 20.57 18.59 19.47
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 27 in the list of sources is a candidate afterglow for 884906_g155 with 1x1 stamp
ra=247.77080 (16:31:04.99) dec=-47.81836 (-47:49:06.1) +/- 1.1" mag=18.41+/-0.35
dist=101.3 REFID=117
*** The position of this source is inconsistent with the XRT position.
The position is 171.6 arc sec from the BAT position.
src: 27 srclist_match has ID
src: 27 distr. of nearby unmatched sources: 0 0 0 0 0
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
247.7730 -47.8138 17.3 -1 USNO-B1 20.63 17.32 18.79
247.7706 -47.8155 10.4 -1 USNO-B1 20.57 18.59 19.47
247.7686 -47.8162 9.3 -1 USNO-B1 19.32 16.56 17.79
247.7740 -47.8170 9.1 -1 USNO-B1 18.15 17.82 17.97
247.7673 -47.8171 9.5 -1 USNO-B1 18.75 15.79 17.10
247.7697 -47.8180 2.9 -1 USNO-B1 15.76 13.95 14.75 *
247.7700 -47.8182 2.1 -1 USNO-B1 16.93 99.99 99.99 *
247.7709 -47.8183 0.2 -1 USNO-B1 16.97 14.20 15.43 *
247.7727 -47.8210 10.7 -1 USNO-B1 18.38 17.61 17.95
247.7702 -47.8210 9.6 -1 USNO-B1 20.24 17.97 18.98
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 33 in the list of sources is a candidate afterglow for 884906_g155 with 1x1 stamp
ra=247.77917 (16:31:07.00) dec=-47.78441 (-47:47:03.9) +/- 1.1" mag=18.62+/-0.35
dist=107.1 REFID=166
*** The position of this source is inconsistent with the XRT position.
The position is 83.8 arc sec from the BAT position.
src: 33 distr. of nearby unmatched sources: 0 0 0 0 0
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
247.7813 -47.7811 12.8 -1 USNO-B1 18.81 16.70 17.63
247.7730 -47.7816 18.2 -1 USNO-B1 99.99 18.08 99.99
247.7853 -47.7825 16.4 -1 USNO-B1 15.67 14.03 14.76
247.7782 -47.7847 2.5 -1 USNO-B1 19.76 16.55 17.98 *
247.7802 -47.7849 3.1 -1 USNO-B1 15.44 12.89 14.02 *
247.7787 -47.7853 3.3 -1 USNO-B1 17.61 99.99 99.99 *
247.7832 -47.7861 11.6 -1 USNO-B1 20.17 17.89 18.90
247.7824 -47.7865 10.7 -1 USNO-B1 19.72 18.01 18.77
247.7802 -47.7883 14.3 -1 USNO-B1 18.96 17.34 18.06
247.7803 -47.7893 17.7 -1 USNO-B1 99.99 15.81 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 95 in the list of sources is a candidate afterglow for 884906_g155 with 1x1 stamp
ra=247.71279 (16:30:51.07) dec=-47.79540 (-47:47:43.4) +/- 1.1" mag=18.51+/-0.35
dist=235.6 REFID=114
*** The position of this source is inconsistent with the XRT position.
The position is 119.1 arc sec from the BAT position.
src: 95 distr. of nearby unmatched sources: 0 0 0 0 0
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
247.7182 -47.7989 18.2 -1 USNO-B1 17.44 15.18 16.18
247.7180 -47.7994 19.2 -1 USNO-B1 17.56 15.68 16.51
247.7129 -47.7960 2.1 -1 USNO-B1 15.84 13.70 14.65 *
247.7087 -47.7915 17.0 -1 USNO-B1 17.77 15.54 16.53
247.7145 -47.7999 16.8 -1 USNO-B1 19.76 17.88 18.71
247.7071 -47.7950 13.7 -1 USNO-B1 20.06 17.52 18.65
247.7110 -47.7995 15.3 -1 USNO-B1 19.21 17.23 18.11
247.7069 -47.7953 14.2 -1 USNO-B1 19.89 16.90 18.23
247.7069 -47.7956 14.2 -1 USNO-B1 19.33 16.41 17.71
247.7077 -47.7982 15.9 -1 USNO-B1 19.49 16.40 17.77
247.7074 -47.7984 17.0 -1 USNO-B1 99.99 17.07 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 96 in the list of sources is a candidate afterglow for 884906_g155 with 3x3 stamp
ra=247.76117 (16:31:02.68) dec=-47.74624 (-47:44:46.5) +/- 1.1" mag=18.15+/-0.35
dist=245.7 REFID=80
*** The position of this source is inconsistent with the XRT position.
The position is 100.7 arc sec from the BAT position.
src: 96 srclist_match has ID
src: 96 distr. of nearby unmatched sources: 0 0 0 0 2
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
247.7651 -47.7466 9.5 -1 USNO-B1 19.54 17.49 18.40
247.7618 -47.7464 1.7 -1 USNO-B1 15.29 14.05 14.60 *
247.7604 -47.7462 1.9 -1 USNO-B1 16.45 13.93 15.05 *
247.7583 -47.7464 6.9 -1 USNO-B1 16.12 14.42 15.17
247.7625 -47.7434 10.6 -1 USNO-B1 17.33 14.29 15.64
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 112 in the list of sources is a candidate afterglow for 884906_g155 with 1x1 stamp
ra=247.73977 (16:30:57.54) dec=-47.75037 (-47:45:01.3) +/- 1.1" mag=18.62+/-0.35
dist=262.2 REFID=179
*** The position of this source is inconsistent with the XRT position.
The position is 84.5 arc sec from the BAT position.
src: 112 distr. of nearby unmatched sources: 0 0 0 0 0
Found 9 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
247.7446 -47.7548 19.6 -1 USNO-B1 17.02 14.87 15.82
247.7447 -47.7544 18.9 -1 USNO-B1 17.21 15.27 16.13
247.7438 -47.7545 17.8 -1 USNO-B1 15.85 99.99 99.99
247.7390 -47.7507 2.2 -1 USNO-B1 17.26 14.98 15.99 *
247.7410 -47.7483 8.0 -1 USNO-B1 99.99 17.08 99.99
247.7345 -47.7507 12.8 -1 USNO-B1 17.09 15.52 16.22
247.7326 -47.7526 19.1 -1 USNO-B1 20.46 18.90 19.59
247.7404 -47.7452 18.7 -1 USNO-B1 19.14 17.13 18.02
247.7370 -47.7460 16.9 -1 USNO-B1 18.15 16.25 17.09
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 114 in the list of sources is a candidate afterglow for 884906_g155 with 3x3 stamp
ra=247.80208 (16:31:12.50) dec=-47.73174 (-47:43:54.3) +/- 1.1" mag=18.24+/-0.35
dist=269.6 REFID=90
*** The position of this source is inconsistent with the XRT position.
The position is 196.4 arc sec from the BAT position.
src: 114 distr. of nearby unmatched sources: 0 0 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
247.8014 -47.7356 14.1 -1 USNO-B1 18.09 18.10 18.10
247.8045 -47.7345 11.5 -1 USNO-B1 19.98 18.02 18.89
247.7945 -47.7315 18.3 -1 USNO-B1 19.18 17.34 18.15
247.8023 -47.7323 2.2 -1 USNO-B1 16.85 15.47 16.08 *
247.8036 -47.7287 11.5 -1 USNO-B1 19.34 16.21 17.60
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 116 in the list of sources is a candidate afterglow for 884906_g155 with 3x3 stamp
ra=247.71481 (16:30:51.55) dec=-47.76542 (-47:45:55.5) +/- 1.1" mag=17.81+/-0.35
dist=271.3 REFID=45
*** The position of this source is inconsistent with the XRT position.
The position is 87.1 arc sec from the BAT position.
src: 116 srclist_match has ID
src: 116 distr. of nearby unmatched sources: 0 0 0 0 0
Found 9 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
247.7230 -47.7660 19.9 -1 USNO-B1 19.78 17.69 18.62
247.7192 -47.7691 17.0 -1 USNO-B1 18.99 16.84 17.80
247.7162 -47.7625 11.0 -1 USNO-B1 99.99 17.26 99.99
247.7142 -47.7657 1.9 -1 USNO-B1 15.89 13.93 14.80 *
247.7139 -47.7696 15.1 -1 USNO-B1 99.99 18.50 99.99
247.7108 -47.7696 17.8 -1 USNO-B1 18.83 16.42 17.49
247.7108 -47.7647 10.0 -1 USNO-B1 17.91 16.96 17.38
247.7106 -47.7650 10.4 -1 USNO-B1 16.48 14.77 15.53
247.7099 -47.7633 14.1 -1 USNO-B1 19.14 16.91 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 133 in the list of sources is a candidate afterglow for 884906_g155 with 3x3 stamp
ra=247.75936 (16:31:02.25) dec=-47.73126 (-47:43:52.5) +/- 1.1" mag=15.52+/-0.35
dist=296.1 REFID=5
*** The position of this source is inconsistent with the XRT position.
The position is 152.3 arc sec from the BAT position.
src: 133 distr. of nearby unmatched sources: 0 0 0 0 0
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
247.7646 -47.7340 16.0 -1 USNO-B1 19.14 16.93 17.91
247.7562 -47.7352 16.1 -1 USNO-B1 19.74 18.07 18.81
247.7615 -47.7331 8.4 -1 USNO-B1 99.99 15.58 99.99
247.7603 -47.7314 2.3 -1 USNO-B1 12.42 12.09 12.24 *
247.7623 -47.7292 10.3 -1 USNO-B1 19.42 16.39 17.74
247.7624 -47.7268 17.8 -1 USNO-B1 19.65 17.96 18.71
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 160 in the list of sources is a candidate afterglow for 884906_g155 with 1x1 stamp
ra=247.74022 (16:30:57.65) dec=-47.72427 (-47:43:27.4) +/- 1.1" mag=18.51+/-0.35
dist=339.4 REFID=165
*** The position of this source is inconsistent with the XRT position.
The position is 176.7 arc sec from the BAT position.
src: 160 distr. of nearby unmatched sources: 0 0 0 0 0
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
247.7465 -47.7278 20.0 -1 USNO-B1 19.05 17.14 17.99
247.7400 -47.7248 2.1 -1 USNO-B1 99.99 15.27 99.99 *
247.7458 -47.7208 18.4 -1 USNO-B1 20.00 18.64 19.24
247.7353 -47.7242 11.9 -1 USNO-B1 18.24 16.15 17.08
247.7381 -47.7229 6.9 -1 USNO-B1 17.59 15.79 16.59
247.7387 -47.7212 11.8 -1 USNO-B1 19.29 17.28 18.17
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 1 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
247.8099 -47.8042 8.7 -1 USNO-B1 17.43 17.93 17.71
The closest star is 8.74" away.
List UVOT sources within 10" of the XRT position:
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 < 13",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: /Home/eud/uvot_tdrss/swift/uvot_gcn/src_884906_XRT.reg
# Region file format: DS9 version 3.0
# find_uvot_ag.pl vrs. 2017-02-17 fem XRT
global font="helvetica 12 bold" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source=1
fk5;circle(247.8088,-47.8065,5.2") # color=red dash=0
point(247.80693,-47.80600) # point=diamond 10 color=red width=2
srclist paragraph message for exposure 1 of trigger 884906
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no image afterglow info
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB190121 (Swift/BAT trigger 884906) at 10:06:57 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 133 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data from the 2.7'x2.7'
sub-image are not available at this time. 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
large, but uncertain, extinction expected.
------- notes for trigger 884906 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190121d10h22m04s471994usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=884906
-expid=569758173 -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/884906/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position.
*** Warning -- no exposure found, using srclist assumed value.
XRT position found for srclist. BAT position found.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 569758173.41324 or about 2019:021:10:09:28 UT
Found 2744 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 42% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 22 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 18.66 mag. The closest srclist source has ra= 247.8099 dec=
-47.7959 mag=18.41 sep=38.19".
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?
569758173 133 WHITE srclist found no candidates.
569758173 133 ? image data are not available.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------