TDRSS lightcurve for Trigger=1015728
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 02 Jan 21 20:38:29 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1015728, Seg_Num: 0
GRB_RA: 235.737d {+15h 42m 57s} (J2000),
236.079d {+15h 44m 19s} (current),
234.923d {+15h 39m 41s} (1950)
GRB_DEC: -37.222d {-37d 13' 19"} (J2000),
-37.288d {-37d 17' 15"} (current),
-37.064d {-37d 03' 48"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 3313 [cnts] Image_Peak=179 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 137 E_range: 15-50 keV
BKG_INTEN: 20385 [cnts]
BKG_TIME: 74277.73 SOD {20:37:57.73} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19216 TJD; 2 DOY; 21/01/02
GRB_TIME: 74291.37 SOD {20:38:11.37} UT
GRB_PHI: -151.62 [deg]
GRB_THETA: 30.15 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 12.96 [sigma]
IMAGE_SIGNIF: 8.14 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +1 -2 -100 +0 -72 +0
SUN_POSTN: 283.78d {+18h 55m 07s} -22.83d {-22d 49' 52"}
SUN_DIST: 43.23 [deg] Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN: 151.34d {+10h 05m 22s} +16.93d {+16d 55' 31"}
MOON_DIST: 96.12 [deg]
MOON_ILLUM: 86 [%]
GAL_COORDS: 336.89, 14.09 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 242.04,-17.05 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This is a rate trigger.
COMMENTS: A point_source was found.
COMMENTS: This does not match any source in the on-board catalog.
COMMENTS: This does not match any source in the ground catalog.
COMMENTS: This is a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 243.73,-15.49 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 02 Jan 21 20:55:04 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1015728, Seg_Num: 0
GRB_RA: 235.737d {+15h 42m 57s} (J2000),
236.079d {+15h 44m 19s} (current),
234.923d {+15h 39m 41s} (1950)
GRB_DEC: -37.222d {-37d 13' 19"} (J2000),
-37.288d {-37d 17' 15"} (current),
-37.064d {-37d 03' 48"} (1950)
GRB_DATE: 19216 TJD; 2 DOY; 21/01/02
GRB_TIME: 74291.37 SOD {20:38:11.37} UT
TRIGGER_INDEX: 137
GRB_PHI: -151.62 [deg]
GRB_THETA: 30.15 [deg]
DELTA_TIME: 77.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 12.96 [sigma]
IMAGE_SIGNIF: 8.14 [sigma]
LC_URL: sw01015728000msb.lc
GCN template for BAT paragraph
Click here!
At 20:38:11 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210102 ***A*** (trigger=1015728). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 235.737, -37.222 which is
RA(J2000) = 15h 42m 57s
Dec(J2000) = -37d 13' 19"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a [**double-peaked**]
structure with a duration of about TTT sec. The peak count rate
was ~2986 counts/sec (15-350 keV), at ~65 sec after the trigger.
Test version of draft template
Initial TDRSS lightcurve and spacecraft attitude plot
TDRSS lightcurve from T0-30 to T0+50 (zoom in)
TDRSS light curve from T0-1 to T0+2 (More zoom in)
1.6s binned TDRSS light curve
Tilan's background subtracted TDRSS light curves
Extended TDRSS light curve and spacecraft attitude plot(s)
Extended TDRSS lc No.1
Extended TDRSS lc No.2
Extended TDRSS lc No.3
Extended TDRSS lc No.4
TDRSS extended lightcurve from T0-1 to T0+2
T50 and T90 calculation
******************************************
battblocks v1.18
------------------------------------------
Input Data: bat_raw_lc.fits
Output GTI: bb.gti
Events to Skip: 128 Changepoint log(prob) Prior: 6.000000
Internal Tick: 1.000000e-04 s
Lookback time: 0 s
Bkg. Subtract?: yes (for fluence/T50/T90 calculations)
------------------------------------------
Estimated T90 duration: 82.816 s +/- 4.12788 s
Estimated T50 duration: 8.192 s +/- 4.096 s
Estimated Peak Interval: MET 631312783.48799992 +/- 0.500000 s
Estimated background rate 1: 4754.478 near MET 631312705.120000 s
Estimated background rate 2: 4767.678 near MET 631312859.264000 s
Estimated total duration: 98.368 s (for data selection)
(from MET 631312715.840000 to MET 631312814.208000)
Estimated total fluence: 45460.595982 count
Created GTI with 12 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 235.737 -37.222 0.083
No match
Search for this GRB position to the source locations in BAT transient monitor (search radius within 12 arcmin)
python compare_catalog.py 235.737 -37.222
No match
Link to SIMBAD
Click here for the SIMBAD search!
Frank's UVOT result
Click here!
Frank's UVOT Blinking images
Click here!
Elevation angle of GRB/Sun at the ground telescope locations
GSFC, Greenbelt, Maryland
TimeUT Azimuth Elevation
Sun: 2021 1 2 20 39.713351 16.925198
Obj: 2021 1 2 20 59.020995 -21.925725
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 1 2 20 8.490968 34.965098
Obj: 2021 1 2 20 40.918078 3.861207
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 1 2 20 1.728162 33.754152
Obj: 2021 1 2 20 37.278066 5.751815
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 1 2 20 317.917601 34.041579
Obj: 2021 1 2 20 9.971782 31.973081
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 1 2 20 290.960685 9.585340
Obj: 2021 1 2 20 291.831133 52.803318
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 1 2 20 279.755729 -27.966527
Obj: 2021 1 2 20 315.643028 -1.671729
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 1 2 20 74.032874 -19.579960
Obj: 2021 1 2 20 63.843517 -62.188599
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 1 2 20 88.292179 47.199868
Obj: 2021 1 2 20 54.813385 14.129237
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1015728/tdrss_ql/
bat_raw_lc.fits : TDRSS FITS light curve from GCN
gcn_position.txt : GCN BAT position notice
ratelc_tdrss.qdp : QDP file of the TDRSS light curve
tdrss_lc.gif : GIF TDRSS light curve
sc_att.qdp : QDP file of the spacecraft attitude
sc_att.gif : GIF spacecraft attitude
bb.gti : Bayesian block GTI file (battblocks)
dur.gti : Duration GTI file (battblocks)
battblocks.log : Output log of battblocks
Plot creation:
Sat Jan 2 15:55:43 EST 2021