image overlap message for exposure 1 of trigger 1032183
uvot_overlap.pl vrs. 2010-12-20b fem started at 210212d10h46m08s783332usUT
The observation of trigger 1032183 started 2021-02-12T04:27:37.0
Examining file ./1032183_g137_uvot_sky_image.fits
The exposure ID is 634796856
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (72.2613,7.2674) with a roll angle of 257.9
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 (72.2610,7.2340) with a radius of 3.000 arc min
This is 2.004 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 6.03 sq. arc min or 0.21 of the BAT error circle
The XRT error circle is centered at (72.2666,7.2697) with a radius of 0.062 arc min
This is 0.346 arc min from the center of the uvot region
The area of the XRT error circle is 0.012 sq. arc min
The UVOT/XRT overlap is 0.012 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1032183
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210212d10h46m11s038694usUT
Observation start time is 2021-02-12T04:27:37.0
Examining file ./1032183_g137_uvot_catalog_image.fits
The exposure ID is 634796856
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 10 detected source(s) for 1032183_g137
Aspect correction adds -0.00062 degrees (-0.148 sec of time = -2.20 arc sec) to RA
Aspect correction adds -0.00101 degrees (-3.64 arcsec) to Dec
Total aspect correction is 4.26 arcsec
Star catalogs centered at 72.2580 , 7.2649 with radius 2.39 arc min.
n_usno: 56 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 8 matched entries is 0.503" for 1032183_g137
Mean and std. dev of mag. difference (MAG_DELTA) are 0.504 and 1.829 for 1032183_g137
Found 3 entries without IDs and 3 entries that are acceptable afterglow candidates for 1032183_g137.
Acceptable entries have no ID, XRT distances < 9.25", 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=72.2610 (04:49:02.64) DEC= 7.2340 (+07:14:02.4)
XRT distances are from RA=72.2666 (04:49:03.99) DEC= 7.2697 (+07:16:10.8)
*** WARNING 30 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1032183_g137 with genie
ra=72.26569 (04:49:03.76) dec=7.25950 (+07:15:34.2) +/- 0.6" mag=18.17+/-0.15
dist=36.8 REFID=9 major=2.9 minor=0.8 flag=18 (blended+aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 93.3 arc sec from the BAT position.
Found 1 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
72.2673 7.2548 17.7 -1 USNO-B1 13.00 12.21 12.57
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 2.9
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1032183_g137 with genie
ra=72.26854 (04:49:04.45) dec=7.25935 (+07:15:33.6) +/- 0.6" mag=15.84+/-0.14
dist=37.8 REFID=6 major=8.8 minor=4.3 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 95.1 arc sec from the BAT position.
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
72.2673 7.2548 16.9 -1 USNO-B1 13.00 12.21 12.57
72.2700 7.2548 17.1 -1 USNO-B1 99.99 18.55 99.99
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 8.8
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1032183_g137 with genie
ra=72.25773 (04:49:01.86) dec=7.26409 (+07:15:50.7) +/- 0.6" mag=18.47+/-0.15
dist=37.6 REFID=10 major=2.5 minor=1.3 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 108.9 arc sec from the BAT position.
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
72.2595 7.2618 10.4 -1 USNO-B1 18.59 17.27 17.86
72.2561 7.2615 11.1 -1 USNO-B1 22.73 99.99 99.99
72.2562 7.2610 12.3 -1 USNO-B1 19.33 18.31 18.76
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 2.5
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 62470.516 counts in the bkg source region of 5750.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 10.864 counts/pixel (5-sig UL in 4" is 20.05 mag) for 1032183_g137
There are 2100.8230 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 10.610 counts/pixel for 1032183_g137
There are 13381.122 counts in the xrt_bkg source region of 1247.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 10.731 counts/pixel (5-sig UL in 4" is 20.06 mag) for 1032183_g137
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 20.61, XRT distances < 9.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1032183_634796856_210212d10h46m11s038694usUT_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(72.2613,7.2674,45")
fk5;-circle(72.2656861860029,7.25950095797309,6")
fk5;-circle(72.2685397317841,7.25934629676479,6")
fk5;-circle(72.2577339137003,7.26408703428192,6")
fk5;-circle(72.2595743326168,7.26174686904319,6")
fk5;-circle(72.2561455155727,7.26106457933439,6")
fk5;-circle(72.2671738851432,7.25487190588482,6")
Region file: 1032183_634796856_210212d10h46m11s038694usUT_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(72.26663,7.26967,8")
Region file: 1032183_634796856_210212d10h46m11s038694usUT_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(72.26663,7.26967,25")
fk5;-circle(72.26663,7.26967,15")
image paragraph message for exposure 1 of trigger 1032183
------ Start for Possible Stand-alone Circular ----
In response to GRB210212 (Swift/BAT trigger 1032183) at 04:25:18 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 112 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.
Results from the list of sources generated on-board are not available at this
time. No correction has been made for the expected extinction corresponding to
E(B-V) of 0.094.
------- notes for trigger 1032183 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210212d10h46m15s268669usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1032183
-expid=634796856 -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/1032183/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 634796856.96818 or about 2021:043:04:27:31 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 10 source(s) in Genie image catalog. 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 20.61 mag. Found 52 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
6% of the Genie image region.
Genie image analysis:
Found 62470.5 counts in the large background region of 5750.0 pixels or a rate
of 10.864 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 19.88 mag. for a
4-arcsec aperture.
Found 2100.8 counts in the XRT position region of 198.0 pixels or a rate of
10.610 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.159 +/- 0.329 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.988 cps or 19.61 mag. The closest Genie
source has ra= 72.2657 dec= 7.2595 mag=18.17 sep=36.76".
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?
634796856 111 WHITE srclist data are not available.
634796856 111 WHITE image found no candidates.
List afterglow candidates for other finding charts.
634797015 270 U srclist found no candidates.
634797015 270 U image found no candidates.
634797617 872 WHITE srclist found no candidates.
634797617 872 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 7.26967
GRB_ERROR: 9.25
GRB_RA: 72.26663
IMAGE_START_TIME: 04:27:31
MAGNITUDE: 19.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT