TDRSS lightcurve for Trigger=1035994

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 06 Mar 21 03:54:08 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1035994,   Seg_Num: 0
GRB_RA:          129.965d {+08h 39m 52s} (J2000),
                 130.393d {+08h 41m 34s} (current),
                 128.947d {+08h 35m 47s} (1950)
GRB_DEC:         +60.196d {+60d 11' 46"} (J2000),
                 +60.120d {+60d 07' 12"} (current),
                 +60.373d {+60d 22' 23"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       930 [cnts]    Image_Peak=184 [image_cnts]
TRIGGER_DUR:     0.064 [sec] 
TRIGGER_INDEX:   10420     E_range: 25-100 keV
BKG_INTEN:       15858 [cnts]
BKG_TIME:        14021.38 SOD {03:53:41.38} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19279 TJD;    65 DOY;   21/03/06
GRB_TIME:        14037.06 SOD {03:53:57.06} UT
GRB_PHI:         -124.33 [deg]
GRB_THETA:        31.55 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     75.37 [sigma]
IMAGE_SIGNIF:    14.16 [sigma]
MERIT_PARAMS:     +1  +0  +0  -4  +2  +3  +0  +0 +47  +0 
SUN_POSTN:       346.93d {+23h 07m 43s}   -5.60d {-05d 35' 56"}
SUN_DIST:        118.88 [deg]   Sun_angle= -9.6 [hr] (East of Sun)
MOON_POSTN:      255.81d {+17h 03m 14s}  -22.87d {-22d 52' 17"}
MOON_DIST:       127.08 [deg]
MOON_ILLUM:      49 [%]
GAL_COORDS:      156.41, 36.67 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      114.68, 40.14 [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 = 270.40,13.40 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=636695642).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 06 Mar 21 04:12:31 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1035994,   Seg_Num: 0
GRB_RA:          129.965d {+08h 39m 52s} (J2000),
                 130.393d {+08h 41m 34s} (current),
                 128.947d {+08h 35m 47s} (1950)
GRB_DEC:         +60.196d {+60d 11' 46"} (J2000),
                 +60.120d {+60d 07' 12"} (current),
                 +60.373d {+60d 22' 23"} (1950)
GRB_DATE:        19279 TJD;    65 DOY;   21/03/06
GRB_TIME:        14037.24 SOD {03:53:57.24} UT
TRIGGER_INDEX:   10420
GRB_PHI:         -124.33 [deg]
GRB_THETA:        31.55 [deg]
DELTA_TIME:      14.00 [sec]
TRIGGER_DUR:     0.064 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     75.37 [sigma]
IMAGE_SIGNIF:    14.16 [sigma]
LC_URL:          sw01035994000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 03:53:57 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210306 ***A*** (trigger=1035994).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 129.965, +60.196 which is 
   RA(J2000) = 08h 39m 52s
   Dec(J2000) = +60d 11' 46"
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 ~19643 counts/sec (15-350 keV), at ~7 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: 63.104 s +/- 4.096 s
  Estimated T50 duration: 4.224 s +/- 0.128 s
  Estimated Peak Interval: MET   636695671.74399996 +/- 0.500000 s
  Estimated background rate 1:     3979.603 near MET 636695651.840000 s
  Estimated background rate 2:     3893.182 near MET 636695811.008000 s
  Estimated total duration: 108.416 s (for data selection)
       (from MET 636695663.680000 to MET 636695772.096000)
  Estimated total fluence: 49865.811981 count
  Created GTI with 41 entries
------------------------------------------

    Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)

    bat_grb_pos_cat.sh 129.965 60.196 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 129.965 60.196
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 3 6 4 146.132322  -51.948485
 Obj: 2021 3 6 4 159.397647  66.506004
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 3 6 4 105.430242  -33.165444
 Obj: 2021 3 6 4 197.188271  59.230787
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 3 6 4 102.447327  -27.869836
 Obj: 2021 3 6 4 202.880427  59.066097
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 3 6 4 81.709801  6.271508
 Obj: 2021 3 6 4 210.889940  30.798823
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 3 6 4 131.473624  54.735154
 Obj: 2021 3 6 4 215.397560  -40.435356
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 3 6 4 13.955688  49.056854
 Obj: 2021 3 6 4 201.344224  11.659822
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 3 6 4 245.241713  -46.653109
 Obj: 2021 3 6 4 145.433155  31.811846
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 3 6 4 23.283513  -51.566631
 Obj: 2021 3 6 4 169.120492  -2.326722
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1035994/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 Mar  5 23:13:03 EST 2021