TDRSS lightcurve for Trigger=1071762
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 03 Sep 21 13:47:27 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1071762, Seg_Num: 0
GRB_RA: 135.414d {+09h 01m 39s} (J2000),
135.620d {+09h 02m 29s} (current),
134.940d {+08h 59m 46s} (1950)
GRB_DEC: -40.309d {-40d 18' 31"} (J2000),
-40.395d {-40d 23' 41"} (current),
-40.111d {-40d 06' 40"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=1736 [image_cnts]
TRIGGER_DUR: 72.000 [sec]
TRIGGER_INDEX: 20000 E_range: 15-50 keV
BKG_INTEN: 0 [cnts]
BKG_TIME: 0.00 SOD {00:00:00.00} UT
BKG_DUR: 0 [sec]
GRB_DATE: 19460 TJD; 246 DOY; 21/09/03
GRB_TIME: 49564.33 SOD {13:46:04.33} UT
GRB_PHI: 14.94 [deg]
GRB_THETA: 16.87 [deg]
SOLN_STATUS: 0x513
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 8.30 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 -1 +0 +1 -58 +0
SUN_POSTN: 162.73d {+10h 50m 55s} +7.33d {+07d 19' 56"}
SUN_DIST: 53.87 [deg] Sun_angle= 1.8 [hr] (West of Sun)
MOON_POSTN: 121.79d {+08h 07m 11s} +24.29d {+24d 17' 27"}
MOON_DIST: 65.95 [deg]
MOON_ILLUM: 13 [%]
GAL_COORDS: 262.82, 4.03 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 156.71,-53.75 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This is an image trigger. (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)
COMMENTS: A point_source was found.
COMMENTS: This does not match any source in the on-board catalog.
COMMENTS: This matches a source in the ground catalog: Vela_X-1, delta=0.261 [deg].
COMMENTS: This is not a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 335.81,1.62 [deg].
COMMENTS:
COMMENTS: This trigger occured while the StarTracker had lost lock, so it is possibly bogus.
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 03 Sep 21 13:59:23 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1071762, Seg_Num: 0
GRB_RA: 135.414d {+09h 01m 39s} (J2000),
135.620d {+09h 02m 29s} (current),
134.940d {+08h 59m 46s} (1950)
GRB_DEC: -40.309d {-40d 18' 31"} (J2000),
-40.395d {-40d 23' 41"} (current),
-40.111d {-40d 06' 40"} (1950)
GRB_DATE: 19460 TJD; 246 DOY; 21/09/03
GRB_TIME: 49564.33 SOD {13:46:04.33} UT
TRIGGER_INDEX: 20000
GRB_PHI: 14.94 [deg]
GRB_THETA: 16.87 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 72.000 [sec]
SOLN_STATUS: 0x513
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 8.30 [sigma]
LC_URL: sw01071762000msb.lc
GCN template for BAT paragraph
Click here!
At 13:46:04 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210903 ***A*** (trigger=1071762). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 135.414, -40.309 which is
RA(J2000) = 09h 01m 39s
Dec(J2000) = -40d 18' 31"
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 ~1231 counts/sec (15-350 keV), at ~-21 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
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: 175.744 s +/- 59.0397 s
Estimated T50 duration: 175.744 s +/- 97.0575 s
Estimated Peak Interval: MET 652369751.29600000 +/- 0.500000 s
Estimated background rate 1: 6371.875 near MET 652369572.800000 s
Estimated background rate 2: 5322.632 near MET 652369765.632000 s
Estimated total duration: 175.744 s (for data selection)
(from MET 652369577.600000 to MET 652369753.344000)
Estimated total fluence: -60167.675729 count
Created GTI with 8 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 135.414 -40.309 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 135.414 -40.309
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 9 3 13 282.331536 26.066832
Obj: 2021 9 3 13 333.940041 4.339083
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 9 3 13 260.498252 -1.410390
Obj: 2021 9 3 13 314.289325 -6.312396
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 9 3 13 257.110728 -6.036483
Obj: 2021 9 3 13 311.408399 -11.143433
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 9 3 13 238.719560 -42.825396
Obj: 2021 9 3 13 305.950006 -30.547754
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 9 3 13 35.767564 -61.672261
Obj: 2021 9 3 13 351.356958 -17.653910
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 9 3 13 136.950496 -37.988877
Obj: 2021 9 3 13 35.727197 -82.461216
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 9 3 13 351.361935 68.366643
Obj: 2021 9 3 13 18.855932 17.347842
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 9 3 13 244.799350 24.196379
Obj: 2021 9 3 13 301.028713 64.279489
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1071762/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:
Fri Sep 3 09:59:47 EDT 2021