TDRSS lightcurve for Trigger=1070298
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 25 Aug 21 06:53:45 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1070298, Seg_Num: 0
GRB_RA: 238.836d {+15h 55m 21s} (J2000),
239.256d {+15h 57m 01s} (current),
237.869d {+15h 51m 29s} (1950)
GRB_DEC: -54.070d {-54d 04' 12"} (J2000),
-54.132d {-54d 07' 55"} (current),
-53.924d {-53d 55' 26"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 269 [cnts] Image_Peak=51 [image_cnts]
TRIGGER_DUR: 0.016 [sec]
TRIGGER_INDEX: 10210 E_range: 15-50 keV
BKG_INTEN: 19826 [cnts]
BKG_TIME: 24796.39 SOD {06:53:16.39} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19451 TJD; 237 DOY; 21/08/25
GRB_TIME: 24807.27 SOD {06:53:27.27} UT
GRB_PHI: 125.89 [deg]
GRB_THETA: 32.83 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 42.22 [sigma]
IMAGE_SIGNIF: 9.65 [sigma]
MERIT_PARAMS: +1 +0 +0 -6 +1 +0 +0 +1 +9 +0
SUN_POSTN: 154.29d {+10h 17m 09s} +10.65d {+10d 39' 05"}
SUN_DIST: 95.70 [deg] Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN: 7.55d {+00h 30m 11s} -1.41d {-01d 24' 52"}
MOON_DIST: 110.06 [deg]
MOON_ILLUM: 91 [%]
GAL_COORDS: 327.89, -0.36 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 248.80,-32.90 [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 = 116.36,-11.43 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 25 Aug 21 07:12:28 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1070298, Seg_Num: 0
GRB_RA: 238.836d {+15h 55m 21s} (J2000),
239.256d {+15h 57m 01s} (current),
237.869d {+15h 51m 29s} (1950)
GRB_DEC: -54.070d {-54d 04' 12"} (J2000),
-54.132d {-54d 07' 55"} (current),
-53.924d {-53d 55' 26"} (1950)
GRB_DATE: 19451 TJD; 237 DOY; 21/08/25
GRB_TIME: 24807.57 SOD {06:53:27.57} UT
TRIGGER_INDEX: 10210
GRB_PHI: 125.89 [deg]
GRB_THETA: 32.83 [deg]
DELTA_TIME: 2.00 [sec]
TRIGGER_DUR: 0.016 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 42.22 [sigma]
IMAGE_SIGNIF: 9.65 [sigma]
LC_URL: sw01070298000msb.lc
GCN template for BAT paragraph
Click here!
At 06:53:27 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210825 ***A*** (trigger=1070298). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 238.836, -54.070 which is
RA(J2000) = 15h 55m 21s
Dec(J2000) = -54d 04' 12"
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 ~3242 counts/sec (15-350 keV), at ~0 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
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: 50.816 s +/- 22.725 s
Estimated T50 duration: 50.816 s +/- 31.0664 s
Estimated Peak Interval: MET 651567288.00000000 +/- 0.500000 s
Estimated background rate 1: 4288.143 near MET 651567223.168000 s
Estimated background rate 2: 4604.680 near MET 651567312.576000 s
Estimated total duration: 50.816 s (for data selection)
(from MET 651567235.136000 to MET 651567285.952000)
Estimated total fluence: -3161.883490 count
Created GTI with 5 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 238.836 -54.070 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 238.836 -54.070
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 8 25 7 212.811468 -34.333119
Obj: 2021 8 25 7 48.849366 -48.807154
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 8 25 7 169.996191 -47.173360
Obj: 2021 8 25 7 39.932240 -24.203380
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 8 25 7 162.160301 -44.341039
Obj: 2021 8 25 7 38.840053 -22.288088
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 8 25 7 116.387312 -30.890223
Obj: 2021 8 25 7 24.008814 7.113961
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 8 25 7 108.074179 8.528405
Obj: 2021 8 25 7 342.966536 65.596631
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 8 25 7 79.311927 33.530402
Obj: 2021 8 25 7 343.739567 -1.935730
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 8 25 7 258.794543 1.696653
Obj: 2021 8 25 7 358.447315 -64.623000
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 8 25 7 295.631594 -53.608494
Obj: 2021 8 25 7 27.626219 5.570833
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1070298/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:
Wed Aug 25 03:14:03 EDT 2021