srclist overlap message for exposure 1 of trigger 1044032
uvot_overlap.pl vrs. 2010-12-20b fem started at 210419d19h39m43s450123usUT
The observation of trigger 1044032 started 2021-04-19T06:56:24.5
Examining file ./1044032_g162_uvot_sky_srclist.fits
The exposure ID is 640508184
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (86.8521,-65.5369) with a roll angle of 302.4
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 (86.8620,-65.5390) with a radius of 3.000 arc min
This is 0.278 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 (86.8510,-65.5025) with a radius of 0.033 arc min
This is 2.062 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 1044032
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210419d19h39m46s362952usUT
Observation start time is 2021-04-19T06:56:24.5
Examining file ./1044032_g162_uvot_catalog_srclist.fits
The exposure ID is 640508184
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 142 detected source(s) for 1044032_g162
Aspect correction adds -0.00194 degrees (-0.465 sec of time = -2.89 arc sec) to RA
Aspect correction adds 0.00083 degrees ( 2.97 arcsec) to Dec
Total aspect correction is 4.14 arcsec
Star catalogs centered at 86.8481 , -65.5283 with radius 6.11 arc min.
n_usno: 1701 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 9.2236
RA DEC Mag Color
bright star 0: 86.70809 (05:46:49.94) -65.48183 (-65:28:54.6) 11.64 USNO-V
bright star 1: 86.75734 (05:47:01.76) -65.45750 (-65:27:27.0) 9.68 USNO-V
bright star 2: 86.67184 (05:46:41.24) -65.48711 (-65:29:13.6) 9.22 USNO-V
Mean distance difference (CAT_DELTA) for 135 matched entries is 0.871" for 1044032_g162
Mean and std. dev of mag. difference (MAG_DELTA) are 1.537 and 0.807 for 1044032_g162
Found 14 entries without IDs and 10 entries that are acceptable afterglow candidates for 1044032_g162.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=86.8620 (05:47:26.88) DEC=-65.5390 (-65:32:20.4)
XRT distances are from RA=86.8510 (05:47:24.23) DEC=-65.5025 (-65:30:09.0)
-----------------
Entry 21 in the list of sources is a candidate afterglow for 1044032_g162 with 3x3 stamp
ra=86.90451 (05:47:37.08) dec=-65.48694 (-65:29:13.0) +/- 1.1" mag=19.04+/-0.35
dist=97.6 REFID=109
*** The position of this source is inconsistent with the XRT position.
The position is 197.9 arc sec from the BAT position.
src: 21 srclist_match has ID
src: 21 distr. of nearby unmatched sources: 0 0 0 0 0
Found 9 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
86.9043 -65.4897 9.9 -1 USNO-B1 18.98 19.67 19.36
86.8977 -65.4872 10.2 -1 USNO-B1 19.00 18.55 18.75
86.9073 -65.4881 5.8 -1 USNO-B1 18.79 18.63 18.70
86.9049 -65.4872 1.2 -1 USNO-B1 17.77 18.84 18.36 *
86.9041 -65.4862 2.7 -1 USNO-B1 18.66 18.51 18.58 *
86.9110 -65.4868 9.8 -1 USNO-B1 19.84 18.44 19.06
86.9036 -65.4840 10.8 -1 USNO-B1 18.48 19.32 18.95
86.9137 -65.4842 16.9 -1 USNO-B1 18.14 18.20 18.18
86.9129 -65.4838 16.9 -1 USNO-B1 18.23 18.43 18.34
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 23 in the list of sources is a candidate afterglow for 1044032_g162 with 3x3 stamp
ra=86.77903 (05:47:06.97) dec=-65.50544 (-65:30:19.6) +/- 1.1" mag=19.53+/-0.35
dist=107.9 REFID=142
*** The position of this source is inconsistent with the XRT position.
The position is 173.0 arc sec from the BAT position.
src: 23 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 25 in the list of sources is a candidate afterglow for 1044032_g162 with 3x3 stamp
ra=86.77940 (05:47:07.06) dec=-65.51167 (-65:30:42.0) +/- 1.1" mag=18.48+/-0.35
dist=111.8 REFID=50
*** The position of this source is inconsistent with the XRT position.
The position is 157.7 arc sec from the BAT position.
src: 25 srclist_match has ID
src: 25 distr. of nearby unmatched sources: 0 0 0 0 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
86.7824 -65.5113 4.7 -1 USNO-B1 19.62 15.80 17.50
86.7805 -65.5116 1.6 -1 USNO-B1 17.79 15.95 16.77 *
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 1044032_g162 with 3x3 stamp
ra=86.86500 (05:47:27.60) dec=-65.54218 (-65:32:31.8) +/- 1.1" mag=19.00+/-0.35
dist=144.4 REFID=130
*** The position of this source is inconsistent with the XRT position.
The position is 12.3 arc sec from the BAT position.
src: 33 distr. of nearby unmatched sources: 0 0 0 0 0
Found 7 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
86.8636 -65.5367 19.8 -1 USNO-B1 18.65 17.91 18.24
86.8635 -65.5376 16.5 -1 USNO-B1 18.75 18.69 18.72
86.8716 -65.5389 15.3 -1 USNO-B1 19.28 18.88 19.06
86.8530 -65.5438 18.8 -1 USNO-B1 99.99 18.90 99.99
86.8665 -65.5422 2.3 -1 USNO-B1 17.95 16.54 17.16 *
86.8549 -65.5447 17.6 -1 USNO-B1 20.91 18.89 19.79
86.8731 -65.5461 18.7 -1 USNO-B1 19.86 17.39 18.49
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 49 in the list of sources is a candidate afterglow for 1044032_g162 with 3x3 stamp
ra=86.92375 (05:47:41.70) dec=-65.54247 (-65:32:32.9) +/- 1.1" mag=19.22+/-0.35
dist=180.2 REFID=120
*** The position of this source is inconsistent with the XRT position.
The position is 92.9 arc sec from the BAT position.
src: 49 srclist_match has ID
src: 49 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
86.9116 -65.5431 18.3 -1 USNO-B1 19.63 18.74 19.14
86.9230 -65.5422 1.5 -1 USNO-B1 99.99 16.38 99.99 *
86.9222 -65.5456 11.4 -1 USNO-B1 19.91 18.94 19.37
86.9230 -65.5474 17.7 -1 USNO-B1 18.95 19.02 18.99
86.9271 -65.5463 14.5 -1 USNO-B1 17.59 16.47 16.97
86.9346 -65.5393 19.8 -1 USNO-B1 22.47 19.27 20.69
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 1044032_g162 with 3x3 stamp
ra=86.88215 (05:47:31.72) dec=-65.55892 (-65:33:32.1) +/- 1.1" mag=18.75+/-0.35
dist=208.4 REFID=55
*** The position of this source is inconsistent with the XRT position.
The position is 77.7 arc sec from the BAT position.
src: 63 srclist_match has ID
src: 63 distr. of nearby unmatched sources: 1 0 0 0 0
Found 7 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
86.8885 -65.5546 18.2 -1 USNO-B1 21.76 17.89 19.61
86.8817 -65.5589 0.7 -1 USNO-B1 16.45 15.85 16.12 *
86.8711 -65.5606 17.6 -1 USNO-B1 14.74 13.75 14.19
86.8835 -65.5587 2.2 -1 USNO-B1 18.13 99.99 99.99 *
86.8897 -65.5620 15.9 -1 USNO-B1 19.41 18.29 18.79
86.8864 -65.5629 15.7 -1 USNO-B1 17.56 18.77 18.23
86.8859 -65.5630 15.9 -1 USNO-B1 19.70 18.72 19.16
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 64 in the list of sources is a candidate afterglow for 1044032_g162 with 3x3 stamp
ra=86.74579 (05:46:58.99) dec=-65.53961 (-65:32:22.6) +/- 1.1" mag=19.06+/-0.35
dist=206.0 REFID=94
*** The position of this source is inconsistent with the XRT position.
The position is 173.2 arc sec from the BAT position.
src: 64 distr. of nearby unmatched sources: 2 0 0 0 0
Found 8 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
86.7530 -65.5414 12.5 -1 USNO-B1 19.15 19.21 19.18
86.7477 -65.5385 5.0 -1 USNO-B1 19.19 99.99 99.99
86.7443 -65.5357 14.1 -1 USNO-B1 99.99 18.66 99.99
86.7448 -65.5389 3.1 -1 USNO-B1 16.04 15.12 15.53 *
86.7441 -65.5389 3.6 -1 USNO-B1 99.99 15.74 99.99 *
86.7416 -65.5351 17.3 -1 USNO-B1 99.99 18.93 99.99
86.7394 -65.5371 13.2 -1 USNO-B1 99.99 18.74 99.99
86.7345 -65.5396 16.9 -1 USNO-B1 18.87 18.62 18.73
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 75 in the list of sources is a candidate afterglow for 1044032_g162 with 3x3 stamp
ra=86.75802 (05:47:01.93) dec=-65.55276 (-65:33:09.9) +/- 1.1" mag=18.72+/-0.35
dist=227.8 REFID=76
*** The position of this source is inconsistent with the XRT position.
The position is 162.7 arc sec from the BAT position.
src: 75 distr. of nearby unmatched sources: 0 0 0 0 0
Found 7 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
86.7679 -65.5551 17.0 -1 USNO-B1 19.37 18.68 18.99
86.7592 -65.5534 2.8 -1 USNO-B1 14.74 15.31 15.06 *
86.7599 -65.5539 5.0 -1 USNO-B1 99.99 14.50 99.99
86.7525 -65.5497 13.6 -1 USNO-B1 16.80 16.90 16.86
86.7495 -65.5490 18.5 -1 USNO-B1 99.99 17.64 99.99
86.7507 -65.5560 16.0 -1 USNO-B1 99.99 17.90 99.99
86.7447 -65.5524 19.9 -1 USNO-B1 19.48 18.32 18.84
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 91 in the list of sources is a candidate afterglow for 1044032_g162 with 3x3 stamp
ra=86.96507 (05:47:51.62) dec=-65.55472 (-65:33:17.0) +/- 1.1" mag=18.64+/-0.35
dist=253.5 REFID=57
*** The position of this source is inconsistent with the XRT position.
The position is 163.7 arc sec from the BAT position.
src: 91 srclist_match has ID
src: 91 distr. of nearby unmatched sources: 0 0 0 0 0
Found 8 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
86.9552 -65.5542 14.8 -1 USNO-B1 19.80 18.82 19.26
86.9588 -65.5521 13.1 -1 USNO-B1 19.50 16.46 17.81
86.9657 -65.5551 1.7 -1 USNO-B1 18.32 17.78 18.02 *
86.9613 -65.5585 14.8 -1 USNO-B1 17.11 15.88 16.43
86.9727 -65.5504 19.2 -1 USNO-B1 19.31 18.52 18.87
86.9684 -65.5574 10.9 -1 USNO-B1 18.26 17.16 17.65
86.9747 -65.5548 14.4 -1 USNO-B1 19.24 18.64 18.90
86.9723 -65.5576 15.0 -1 USNO-B1 17.46 16.10 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 93 in the list of sources is a candidate afterglow for 1044032_g162 with 3x3 stamp
ra=86.92571 (05:47:42.17) dec=-65.56620 (-65:33:58.3) +/- 1.1" mag=19.34+/-0.35
dist=254.9 REFID=139
*** The position of this source is inconsistent with the XRT position.
The position is 136.4 arc sec from the BAT position.
src: 93 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
86.9138 -65.5665 17.8 -1 USNO-B1 18.75 19.49 19.16
86.9313 -65.5623 16.2 -1 USNO-B1 18.41 18.06 18.22
86.9164 -65.5691 17.3 -1 USNO-B1 19.75 18.70 19.16
86.9286 -65.5665 4.5 -1 USNO-B1 18.51 17.68 18.05
86.9320 -65.5684 12.3 -1 USNO-B1 19.43 18.77 19.07
86.9305 -65.5706 17.4 -1 USNO-B1 18.86 18.25 18.52
*** If XRT position is correct, then this is NOT the afterglow
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
86.8514 -65.5041 5.7 -1 USNO-B1 16.86 15.86 16.30
86.8561 -65.5025 7.7 -1 USNO-B1 19.33 18.45 18.84
The closest star is 5.68" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=86.85115 (05:47:24.28) dec=-65.50417 (-65:30:15.0) +/- 1.1" mag=17.66+/-0.35 dist=6.0 REFID=15
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 1044032
1 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 GRB210419 (Swift/BAT trigger 1044032) at 06:53:41 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 136 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
0.075.
------- notes for trigger 1044032 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210419d19h39m52s137199usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1044032
-expid=640508184 -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/1044032/
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 640508184.4514 or about 2021:109:06:56:19 UT
Found 1697 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 31% of the srclist region. Found 142 sources in
srclist catalog. Found 14 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 29 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 2 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.03 mag. Found 312 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 31% of the Genie image region.
Genie image analysis:
Found 172522.0 counts in the large background region of 5501.0 pixels or a rate
of 31.362 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 19.30 mag. for a
4-arcsec aperture.
Found 8218.1 counts in the XRT position region of 201.0 pixels or a rate of
40.886 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 12.567 +/- 0.645 (1-sigma) cps or
16.85 mag and a range from 16.80 to 16.91 mag. The 3-sigma UL at the XRT
position is 14.502 cps or 16.70 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 86.8512 dec= -65.5042 mag=17.66 sep=6.01".
The closest srclist source has ra= 86.8512 dec= -65.5042 mag=17.66 sep=6.01".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 86.8514 dec= -65.5041 mag=16.87 sep=5.67". The closest Genie
source has ra= 86.8514 dec= -65.5041 mag=16.87 sep=5.67".
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 136 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 05:47:24.33 = 86.85136
DEC(J2000) = -65:30:14.7 = -65.50407
with a 90%-confidence error radius of about 0.61 arc sec. This position is 5.67
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.87 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.075.
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?
640508184 136 WHITE srclist found no candidates.
640508184 136 WHITE image found no candidates.
List afterglow candidates for other finding charts.
640508342 294 U srclist found no candidates.
640508342 294 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -65.50250
GRB_ERROR: 5
GRB_RA: 86.85096
IMAGE_START_TIME: 06:56:19
MAGNITUDE: 16.7
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT