TDRSS lightcurve for Trigger=1238732

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 24 Jun 24 06:01:20 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1238732,   Seg_Num: 0
GRB_RA:          102.444d {+06h 49m 47s} (J2000),
                 102.742d {+06h 50m 58s} (current),
                 101.835d {+06h 47m 20s} (1950)
GRB_DEC:          -6.543d {-06d 32' 36"} (J2000),
                  -6.573d {-06d 34' 23"} (current),
                  -6.485d {-06d 29' 05"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1473 [cnts]    Image_Peak=98 [image_cnts]
TRIGGER_DUR:     0.512 [sec] 
TRIGGER_INDEX:   41     E_range: 25-100 keV
BKG_INTEN:       16628 [cnts]
BKG_TIME:        21654.31 SOD {06:00:54.31} UT
BKG_DUR:         8 [sec]
GRB_DATE:        20485 TJD;   176 DOY;   24/06/24
GRB_TIME:        21669.99 SOD {06:01:09.99} UT
GRB_PHI:         -63.10 [deg]
GRB_THETA:        30.90 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     13.45 [sigma]
IMAGE_SIGNIF:    7.71 [sigma]
MERIT_PARAMS:     +1  +0  +0  -1  +2  -2 -100  +1 -85  +0 
SUN_POSTN:        93.52d {+06h 14m 04s}  +23.40d {+23d 23' 46"}
SUN_DIST:         31.30 [deg]   Sun_angle= -0.6 [hr] (East of Sun)
MOON_POSTN:      305.05d {+20h 20m 12s}  -24.42d {-24d 25' 29"}
MOON_DIST:       142.14 [deg]
MOON_ILLUM:      94 [%]
GAL_COORDS:      218.57, -3.35 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      104.22,-29.37 [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 = 44.48,-20.47 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(2.0<100sec) coincident with the FERMI_GBM event (trignum=740901676).  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 24 Jun 24 06:18:06 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1238732,   Seg_Num: 0
GRB_RA:          102.444d {+06h 49m 47s} (J2000),
                 102.742d {+06h 50m 58s} (current),
                 101.835d {+06h 47m 20s} (1950)
GRB_DEC:          -6.543d {-06d 32' 36"} (J2000),
                  -6.573d {-06d 34' 23"} (current),
                  -6.485d {-06d 29' 05"} (1950)
GRB_DATE:        20485 TJD;   176 DOY;   24/06/24
GRB_TIME:        21669.99 SOD {06:01:09.99} UT
TRIGGER_INDEX:   41
GRB_PHI:         -63.10 [deg]
GRB_THETA:        30.90 [deg]
DELTA_TIME:      32.00 [sec]
TRIGGER_DUR:     0.512 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.45 [sigma]
IMAGE_SIGNIF:    7.71 [sigma]
LC_URL:          sw01238732000msb.lc

GCN template for BAT paragraph

  • Click here!
    At 06:01:09 UT, the Swift Burst Alert Telescope (BAT) triggered and
    located GRB 240624 ***A*** (trigger=1238732).  Swift slewed immediately to the burst.
    The BAT on-board calculated location is 
    RA, Dec 102.444, -6.543 which is 
       RA(J2000) = 06h 49m 47s
       Dec(J2000) = -06d 32' 36"
    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 ~2390 counts/sec (15-350 keV), at ~1 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: 55.04 s +/- 46.944 s
      Estimated T50 duration: 1.536 s +/- 0.128 s
      Estimated Peak Interval: MET   740901705.53600001 +/- 0.500000 s
      Estimated background rate 1:     4121.453 near MET 740901691.840000 s
      Estimated background rate 2:     3980.482 near MET 740901853.056000 s
      Estimated total duration: 112.512 s (for data selection)
           (from MET 740901703.680000 to MET 740901816.192000)
      Estimated total fluence: 3613.826002 count
      Created GTI with 7 entries
    ------------------------------------------
     
    

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

    bat_grb_pos_cat.sh 102.444 -6.543 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 102.444 -6.543
    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: 2024 6 24 6 192.306849  -26.622427
     Obj: 2024 6 24 6 185.119654  -57.492902
    
  • the object visibility at GSFC, Greenbelt, Maryland
     
    MMT Observatory, Mt. Hopkins, Arizona
          TimeUT       Azimuth     Elevation
     Sun: 2024 6 24 6 156.336240  -31.050541
     Obj: 2024 6 24 6 124.103791  -51.555042
    
  • the object visibility at MMT, Mt. Hopkins, Arizona
     
    Hale Telescope, Palomar Mountain, California
          TimeUT       Azimuth     Elevation
     Sun: 2024 6 24 6 151.005400  -27.319929
     Obj: 2024 6 24 6 119.457998  -46.391612
    
  • the object visibility at Hale Telescope, Palomar Mt., California
     
    Mauna Kea, Hawaii
          TimeUT       Azimuth     Elevation
     Sun: 2024 6 24 6 120.563974  -12.047000
     Obj: 2024 6 24 6 88.509081  -15.570947
    
  • the object visibility at Mauna Kea, Hawaii
     
    Siding Spring Obs., Australia
          TimeUT       Azimuth     Elevation
     Sun: 2024 6 24 6 127.299937  12.088311
     Obj: 2024 6 24 6 107.999138  38.255130
    
  • the object visibility at Siding Spring Obs., Australia
     
    Tokyo, Japan
          TimeUT       Azimuth     Elevation
     Sun: 2024 6 24 6 84.189460  52.455582
     Obj: 2024 6 24 6 42.809616  38.997051
    
  • the object visibility at Tokyo, Japan
     
    William Herschel Telescope, La Palma, Canary Islands, Spain
          TimeUT       Azimuth     Elevation
     Sun: 2024 6 24 6 240.440547  -4.109059
     Obj: 2024 6 24 6 261.827345  -27.875110
    
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
     
    Gemini South, Cerro Pachon, Chile
          TimeUT       Azimuth     Elevation
     Sun: 2024 6 24 6 289.217586  -72.643103
     Obj: 2024 6 24 6 345.871215  -52.188927
    
  • the object visibility at Gemini South, Cerro Pachon, Chile
     
     
     
    The data/results are in /local/data/bat1/prebascript/trigger1238732/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:
    Mon Jun 24 02:18:42 EDT 2024