batgrbproduct Analysis for Trigger=689956

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jun  9 21:32:00 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger689956/batgroup_hand_proc
======================================================================

  Trigger: 00689956      Segment: 000

  BAT Trigger Time: 487131680   [s; MET]
      Trigger Stop: 487132624   [s; MET]
               UTC: 2016-06-09T02:21:03.610920    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 266.42190704556   Dec: -29.0084813194078  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.91
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    6.91

  Flight Position:   [ source = BAT ]
    RA: 266.42190704556   Dec: -29.0084813194078  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 266.407803770515   Dec: -29.0627586982363  [deg; J2000]  
        { 17h 45m 37.9s , -29d 03' 45.9" }
         +/- 2.54659724427335 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.35380975413751 [arcmin] (formal 1-sigma fit error)
    SNR: 8.00156881459646
 
  Angular difference between Flight and Ground position is 3.339625 arcmin
 
  Partial Coding Fraction: 0.9921875    [ including projection effects ]

  Duration
     T90: 944 +/- 
        Measured from: 0
                   to: 944     [s; relative to TRIGTIME]
     T50: 944 +/- 
        Measured from: 0
                   to: 944     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 944 second)
        Measured from: 0     
                   to: 944     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 944     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.312096   2.334193   1.318169   0.322297
           0.205313   0.175494   0.146737   0.125594 [error]
 Peak      2.312096   2.334193   1.318169   0.322297
           0.205313   0.175494   0.146737   0.125594 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 6.29e-07 9.49e-07 1.07e-06 2.31e-06 3.34e-06 4.96e-06   erg/cm2
              Error 8.60e-08 8.08e-08 1.42e-07 6.37e-07 3.26e-07 7.64e-07   erg/cm2
Peak flux Power-law 2.16e-02 1.80e-02 1.02e-02 8.50e-03 5.35e-02 5.83e-02   ph/cm2/s
              Error 3.02e-03 1.55e-03 1.30e-03 2.18e-03 4.64e-03 4.94e-03   ph/cm2/s
 
Fluence   Cutoff-PL 6.09e-07 9.76e-07 1.07e-06 1.48e-06 3.25e-06 4.13e-06   erg/cm2
              Error 9.95e-08 1.03e-07 1.48e-07 1.19e-06 3.85e-07 1.07e-06   erg/cm2
Peak flux Cutoff-PL 2.09e-02 1.84e-02 1.02e-02 6.00e-03 5.28e-02 5.55e-02   ph/cm2/s
              Error 3.09e-03 1.45e-03 1.34e-03 4.00e-03 4.99e-03 6.77e-03   ph/cm2/s
 
Fluence        Band 5.96e-07 9.82e-07 1.06e-06 1.82e-06 3.25e-06 4.46e-06   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.823    0.162    -      -           3.85e-04 3.69e-05   75.970 57
CPL   1.568    0.667      76.4   -4.1      5.30e-04 5.11e-04   75.510 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.823    0.162    -      -           3.85e-04 3.69e-05   75.970 57
CPL   1.568    0.667      76.4   -4.1      5.30e-04 5.11e-04   75.510 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  944.000    0.000  944.000
T90   944.000    0.000  944.000
T50   944.000    0.000  944.000
Peak  944.000    0.000  944.000
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte

    Image

    Pre-slew 15.0-350.0 keV image (Event data)

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
      266.4078   -29.0628   0.0240     8.2984   -84.8610         6.2112555      8.002 TRIG_00689956                 
     
    Foreground time interval of the image:
      0.000 944.000 (delta_t = 944.000 [sec])
    Background time interval of the image:
    

    Lightcurves

    Notes:

    1 s binning

    From T0-310 s to T0+310 s
    From T100_start - 20 s to T100_end + 30 s
    Full time interval

    64 ms binning

    Full time interval
    From T100_start to T100_end
    From T0-5 sec to T0+5 sec

    16 ms binning

    From T100_start-5 s to T100_start+5 s

    8 ms binning

    From T100_start-3 s to T100_start+3 s

    2 ms binning

    From T100_start-1 s to T100_start+1 s

    SN=5 or 10 sec. binning (whichever binning is satisfied first)

    SN=5 or 10 sec. binning (T < 200 sec)

    Spectra

    Notes:

    Time averaged spectrum fit using the pre-slew DRM

    Power-law model
    Time interval is from    0.000 sec. to  944.000 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.82334     ( -0.160145   0.164123 )
    Norm@50keV  : 3.84731E-04    ( -3.71298e-05   3.65798e-05 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.97 using 59 PHA bins.
    # Reduced chi-squared =          1.333 for     57 degrees of freedom 
    # Null hypothesis probability =   4.729243e-02
     
    Photon flux (15-150 keV)    in 944 sec: 5.35023E-02 ( -0.00463449  0.00464277 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.34115e-06 ( -3.241e-07  3.28491e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.000 sec. to  944.000 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.56756     ( -0.726872   0.607014 )
    Epeak [keV] : 76.3928      ( -68.1892 -76.3967 )
    Norm@50keV  : 5.29814E-04    ( -0.000255171   0.000767624 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.51 using 59 PHA bins.
    # Reduced chi-squared =          1.348 for     56 degrees of freedom 
    # Null hypothesis probability =   4.220123e-02
     
    Photon flux (15-150 keV)    in 944 sec: 5.27509E-02 ( -0.005006  0.0049751 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.2529e-06 ( -3.88786e-07  3.82046e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.000 sec. to  944.000 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.37991   ( 1.39108   1.39108 )
    beta        : -2.05395    ( 2.05962   0.373745 )
    Epeak [keV] : 58.6228      ( -60.3675 61.7872 )
    Norm@50keV   : 6.84722E-04    ( -0.000258829   0 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.26 using 59 PHA bins.
    # Reduced chi-squared =          1.368 for     55 degrees of freedom 
    # Null hypothesis probability =   3.617354e-02
     
    Photon flux (15-150 keV)    in 944 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.24559e-06 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 11.7928  (-1.19102  1.34097)
    R^2/D10^2   : 1.32227E-02  (-0.00439198   0.00651791)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         104.01 using 59 PHA bins.
    # Reduced chi-squared =         1.8247 for     57 degrees of freedom 
    # Null hypothesis probability =   1.435508e-04
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.665e-07   5.768e-08
    25- 50  1.130e-06   1.251e-07
    50-150  9.338e-07   1.902e-07
    15-150  2.430e-06   2.492e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 97.0215       (-26.7616      47.6843)
    Norm        : 0.235749       (-0.0285276     0.0344899)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.93 using 59 PHA bins.
    # Reduced chi-squared =          1.332 for     57 degrees of freedom 
    # Null hypothesis probability =   4.762541e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.816e-07   8.076e-08
    25- 50  9.994e-07   9.690e-08
    50-150  1.592e-06   5.740e-07
    15-150  3.173e-06   6.230e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.80181        (-1.49366      3.00071)
    R1^2/D10^2  : 0.240590        (-0.189873      1.02561)
    kT2 [keV]   : 17.3033        (-3.38826      12.3632)
    R2^2/D10^2  : 2.61039E-03    (-0.00227749   0.0036757)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          78.43 using 59 PHA bins.
    # Reduced chi-squared =          1.426 for     55 degrees of freedom 
    # Null hypothesis probability =   2.070975e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.180e-07   2.988e-07
    25- 50  9.474e-07   3.261e-07
    50-150  1.451e-06   5.941e-07
    15-150  3.017e-06   1.018e-06
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.000 sec. to  944.000 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.82334     ( -0.160145   0.164123 )
    Norm@50keV  : 3.84731E-04    ( -3.71298e-05   3.65798e-05 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.97 using 59 PHA bins.
    # Reduced chi-squared =          1.333 for     57 degrees of freedom 
    # Null hypothesis probability =   4.729243e-02
     
    Photon flux (15-150 keV)    in 944 sec: 5.35023E-02 ( -0.00463449  0.00464277 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.34115e-06 ( -3.241e-07  3.28491e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.000 sec. to  944.000 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.56756     ( -0.726872   0.607014 )
    Epeak [keV] : 76.3928      ( -68.1892 -76.3967 )
    Norm@50keV  : 5.29814E-04    ( -0.000255171   0.000767624 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.51 using 59 PHA bins.
    # Reduced chi-squared =          1.348 for     56 degrees of freedom 
    # Null hypothesis probability =   4.220123e-02
     
    Photon flux (15-150 keV)    in 944 sec: 5.27509E-02 ( -0.005006  0.0049751 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.2529e-06 ( -3.88786e-07  3.82046e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.000 sec. to  944.000 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.37991   ( 1.39108   1.39108 )
    beta        : -2.05395    ( 2.05962   0.373745 )
    Epeak [keV] : 58.6228      ( -60.3675 61.7872 )
    Norm@50keV   : 6.84722E-04    ( -0.000258829   0 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.26 using 59 PHA bins.
    # Reduced chi-squared =          1.368 for     55 degrees of freedom 
    # Null hypothesis probability =   3.617354e-02
     
    Photon flux (15-150 keV)    in 944 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.24559e-06 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 11.7928  (-1.19102  1.34097)
    R^2/D10^2   : 1.32227E-02  (-0.00439198   0.00651791)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         104.01 using 59 PHA bins.
    # Reduced chi-squared =         1.8247 for     57 degrees of freedom 
    # Null hypothesis probability =   1.435508e-04
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.665e-07   6.499e-08
    25- 50  1.130e-06   1.251e-07
    50-150  9.338e-07   1.865e-07
    15-150  2.430e-06   2.723e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 97.0215       (-26.7616      47.6843)
    Norm        : 0.235749       (-0.0285276     0.0344899)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.93 using 59 PHA bins.
    # Reduced chi-squared =          1.332 for     57 degrees of freedom 
    # Null hypothesis probability =   4.762541e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.816e-07   7.373e-08
    25- 50  9.994e-07   9.964e-08
    50-150  1.592e-06   6.226e-07
    15-150  3.173e-06   6.160e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.80181        (-1.49366      3.00071)
    R1^2/D10^2  : 0.240590        (-0.189873      1.02561)
    kT2 [keV]   : 17.3033        (-3.38826      12.3632)
    R2^2/D10^2  : 2.61039E-03    (-0.00227749   0.0036757)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          78.43 using 59 PHA bins.
    # Reduced chi-squared =          1.426 for     55 degrees of freedom 
    # Null hypothesis probability =   2.070975e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.180e-07   2.929e-07
    25- 50  9.474e-07   3.069e-07
    50-150  1.451e-06   6.160e-07
    15-150  3.017e-06   9.888e-07
    

    Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

    Power-law model
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.82334     ( -0.160145   0.164123 )
    Norm@50keV  : 3.84731E-04    ( -3.71298e-05   3.65798e-05 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.97 using 59 PHA bins.
    # Reduced chi-squared =          1.333 for     57 degrees of freedom 
    # Null hypothesis probability =   4.729243e-02
     
    Photon flux (15-150 keV)    in 944 sec: 5.35023E-02 ( -0.00463449  0.00464277 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.34115e-06 ( -3.241e-07  3.28491e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.56756     ( -0.726872   0.607014 )
    Epeak [keV] : 76.3928      ( -68.1892 -76.3967 )
    Norm@50keV  : 5.29814E-04    ( -0.000255171   0.000767624 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.51 using 59 PHA bins.
    # Reduced chi-squared =          1.348 for     56 degrees of freedom 
    # Null hypothesis probability =   4.220123e-02
     
    Photon flux (15-150 keV)    in 944 sec: 5.27509E-02 ( -0.005006  0.0049751 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.2529e-06 ( -3.88786e-07  3.82046e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.37991   ( 1.39108   1.39108 )
    beta        : -2.05395    ( 2.05962   0.373745 )
    Epeak [keV] : 58.6228      ( -60.3675 61.7872 )
    Norm@50keV   : 6.84722E-04    ( -0.000258829   0 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.26 using 59 PHA bins.
    # Reduced chi-squared =          1.368 for     55 degrees of freedom 
    # Null hypothesis probability =   3.617354e-02
     
    Photon flux (15-150 keV)    in 944 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.24559e-06 ( 0  0 ) ergs/cm2
     
    

    S(25-50 keV) vs. S(50-100 keV) plot

    S(25-50 keV)  = 9.49e-07
    S(50-100 keV) = 1.07e-06
    

    T90 vs. Hardness ratio plot

    T90                                   = 944 sec.
    Hardness ratio (energy fluence ratio) = 1.1275
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.00956
    Count Ratio (50-100 keV) / (15-25 keV) = 0.570119
    

    Mask shadow pattern

    IMX = 1.306467582719290E-02, IMY = 1.452694342139665E-01
    

    TIME vs. PHA plot around the trigger time

    TIME vs. DetID plot around the trigger time

    100 us light curve (15-350 keV)

    Spacecraft aspect plot

    Bright source in the pre-burst/pre-slew/post-slew images

    Pre-burst image of 15-350 keV band

    Time interval of the image:
     
    

    Pre-slew background subtracted image of 15-350 keV band

    Time interval of the image:
    0.000000 944.000000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    244.9750 -15.6362    0.2  16.0  118.3  41.9232  52.7    0.4	Sco X-1                       
    255.9613 -37.8424    0.7  11.2   -7.3  13.6301  16.6    1.2	4U 1700-377                   
    256.3794 -36.4146    8.4   9.7   -8.3   1.1106   1.4    2.8	GX 349+2                      
    263.2010 -24.6266    0.0   5.7 -123.9   1.8853   2.3   12.7	GX 1+4                        
    264.7921 -44.4893    5.9  18.7  -29.8   1.5031   1.9    3.2	4U 1735-44                    
    268.4034  -1.3857    6.4  27.5 -168.7   1.4399   1.8    4.5	SW J1753.5-0127               
    270.3105 -25.1102    3.0  11.7 -108.3   3.3407   3.8    2.3	GX 5-1                        
    270.3281 -25.7258    2.8  11.6 -105.3   3.9932   4.6    1.7	GRS 1758-258                  
    273.9710 -14.0100    2.9  20.1 -139.3   3.6074   4.0    2.6	GX 17+2                       
    275.9107 -30.3947    2.9  16.7  -86.1   2.8246   3.9    1.8	H1820-303                     
    284.8712 -25.0478    8.6  24.7 -100.9   1.2960   1.3   11.8	HT1900.1-2455                 
    288.8159  10.9449   34.3  48.5 -150.0   0.6369   0.3    1.0	GRS 1915+105                  
    262.9456 -33.9797    9.5   8.7  -45.3   1.0193   1.2    9.0	GX 354-0                      
    216.5240 -51.6172    2.6  39.5   26.6   6.4849   4.5 ------	UNKNOWN                       
    198.9504 -72.4533    2.4  55.2    5.1  15.0784   4.8 ------	UNKNOWN                       
    262.8854 -16.9490    3.3  11.0 -164.5   2.6571   3.6 ------	UNKNOWN                       
    266.4078 -29.0630    1.4   8.3  -84.9   6.2046   8.0 ------	UNKNOWN                       
    302.7801 -22.9175    7.0  41.2  -98.2   7.8057   1.7 ------	UNKNOWN                       
    299.3644  -0.6593    3.5  48.0 -129.0  13.8958   3.3 ------	UNKNOWN                       
    298.6322   4.9630    3.3  51.0 -135.4  17.4795   3.5 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
     
    
    Plot creation:
    Thu Jun  9 21:48:31 EDT 2016