batgrbproduct Analysis for Trigger=423181

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jan 17 18:23:13 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger423181
======================================================================

  Trigger: 00423181      Segment: 000

  BAT Trigger Time: 296583976   [s; MET]
      Trigger Stop: 296584040   [s; MET]
               UTC: 2010-05-26T16:26:10.166000    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 230.785345490408   Dec: 25.6390614214754  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.19
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.19

  Flight Position:   [ source = BAT ]
    RA: 230.785345490408   Dec: 25.6390614214754  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 230.784823014055   Dec: 25.6298554920833  [deg; J2000]  
        { 15h 23m 08.4s , +25d 37' 47.5" }
         +/- 1.8162569628365 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.0876105788903 [arcmin] (formal 1-sigma fit error)
    SNR: 12.967764214267
 
  Angular difference between Flight and Ground position is 0.553078 arcmin
 
  Partial Coding Fraction: 0.2695312    [ including projection effects ]

  Duration
     T90: 97.5999999642372 +/- 8.4753064967989
        Measured from: -20.8560000061989
                   to: 76.7439999580383     [s; relative to TRIGTIME]
     T50: 70.6839999556541 +/- 14.7373986772667
        Measured from: -9.92400002479553
                   to: 60.7599999308586     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 69.9039999842644     
                   to: 70.9039999842644     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -33.4800000190735     
                   to: 80.5     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.324158   1.448520   0.994924   0.213550
           0.112804   0.117239   0.102982   0.088454 [error]
 Peak      0.029222   0.037317   0.017107   0.015141
           0.010897   0.011264   0.010272   0.008189 [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 4.71e-07 7.06e-07 7.90e-07 1.68e-06 2.47e-06 3.64e-06   erg/cm2
              Error 6.54e-08 6.06e-08 1.06e-07 4.69e-07 2.42e-07 5.62e-07   erg/cm2
Peak flux Power-law 2.75e-01 2.45e-01 1.50e-01 1.39e-01 7.29e-01 8.09e-01   ph/cm2/s
              Error 1.58e-01 9.87e-02 7.82e-02 1.60e-01 2.92e-01 3.22e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.71e-07 7.06e-07 7.92e-07 1.54e-06 2.47e-06 3.51e-06   erg/cm2
              Error 6.60e-08 6.05e-08 1.05e-07 6.82e-07 1.82e-07 7.34e-07   erg/cm2
Peak flux Cutoff-PL 2.21e-01 2.96e-01 1.60e-01 2.78e-02 7.00e-01 7.04e-01   ph/cm2/s
              Error 1.76e-01 1.35e-01 1.31e-01 1.30e-01 2.92e-01 3.16e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.20e-01 2.97e-01 1.59e-01 2.70e-02 6.99e-01 7.02e-01   ph/cm2/s
              Error -------- -------- -------- -------- 2.92e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.837    0.165    -      -           2.36e-03 2.28e-04   67.990 57
CPL   2.019    0.000       8.7    0.0      1.89e-03 0.00e+00   67.710 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.707    0.651    -      -           5.47e-03 2.34e-03   66.980 57
CPL  -0.029    4.046      52.9    0.0      4.80e-02 5.67e+01   65.720 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: 103.232000 sec.
T50 in the 50-300 keV band: 58.368000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  113.980  -33.480   80.500
T90    97.600  -20.856   76.744
T50    70.684   -9.924   60.760
Peak    1.000   69.904   70.904
  • Click here for the BAT GCN circular template

    Image

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

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
      230.7848    25.6299   0.0148    40.9042    31.7463         3.2046489     12.968 TRIG_00423181                 
     
    Foreground time interval of the image:
    -33.480  72.101 (delta_t = 105.581 [sec])
    Background time interval of the image:
    -530.799 -508.939 (delta_t =  21.861 [sec])
    -239.000 -33.480 (delta_t = 205.520 [sec])
    

    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
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    8 ms binning

    From T100_start-3 s to T100_start+3 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    2 ms binning

    From T100_start-1 s to T100_start+1 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

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

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

    Quad-rate summed light curves (from T0-300s to T0+1000s)

    The mask-weighted light curves based on cleaned DPHs

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from  -33.480 sec. to   80.500 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.83693     ( -0.161889   0.167143 )
    Norm@50keV  : 2.35904E-03    ( -0.000229912   0.000225649 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.99 using 59 PHA bins.
    # Reduced chi-squared =          1.193 for     57 degrees of freedom 
    # Null hypothesis probability =   1.511706e-01
     
    Photon flux (15-150 keV)    in 114 sec: 0.329842 ( -0.0288328  0.0289174 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.4733e-06 ( -2.41072e-07  2.4339e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -33.480 sec. to   80.500 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.01911     (     )
    Epeak [keV] : 8.73626      (   )
    Norm@50keV  : 1.89073E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.71 using 59 PHA bins.
    # Reduced chi-squared =          1.209 for     56 degrees of freedom 
    # Null hypothesis probability =   1.356841e-01
     
    Photon flux (15-150 keV)    in 114 sec: 0.330203 ( -0.029392  0.028483 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.4666e-06 ( -1.17682e-07  2.45613e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  -33.480 sec. to   80.500 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.50956   ( 1.51059   1.51059 )
    beta        : -1.83690    ( 1.8369   0.1618 )
    Epeak [keV] : 20.1076      ( -19.6265 -19.6265 )
    Norm@50keV   : 5.03353E-03    ( -0.00255327   0.102529 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.99 using 59 PHA bins.
    # Reduced chi-squared =          1.236 for     55 degrees of freedom 
    # Null hypothesis probability =   1.121423e-01
     
    Photon flux (15-150 keV)    in 114 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 12.4235  (  )
    R^2/D10^2   : 6.59540E-02  (   )
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         120.03 using 59 PHA bins.
    # Reduced chi-squared =         2.1058 for     57 degrees of freedom 
    # Null hypothesis probability =   2.165554e-06
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.460e-07   3.962e-08
    25- 50  8.057e-07   9.308e-08
    50-150  7.648e-07   1.466e-07
    15-150  1.816e-06   2.018e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 103.789       (-28.8059      56.9477)
    Norm        : 1.42509       (-0.173449     0.196794)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          71.99 using 59 PHA bins.
    # Reduced chi-squared =          1.263 for     57 degrees of freedom 
    # Null hypothesis probability =   8.717517e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.246e-07   5.768e-08
    25- 50  7.396e-07   7.632e-08
    50-150  1.224e-06   4.168e-07
    15-150  2.388e-06   4.497e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.72900        (-0.977808      1.27536)
    R1^2/D10^2  : 1.96523        (-1.23373      3.73468)
    kT2 [keV]   : 21.2650        (-3.79677      5.89293)
    R2^2/D10^2  : 7.65839E-03    (-0.00451741   0.00833868)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.62 using 59 PHA bins.
    # Reduced chi-squared =          1.230 for     55 degrees of freedom 
    # Null hypothesis probability =   1.180611e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.078e-07   2.099e-07
    25- 50  6.305e-07   1.870e-07
    50-150  1.304e-06   4.372e-07
    15-150  2.442e-06   6.595e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from   69.904 sec. to   70.904 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.70745     ( -0.615317   0.685827 )
    Norm@50keV  : 5.47449E-03    ( -0.00237915   0.00230706 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.98 using 59 PHA bins.
    # Reduced chi-squared =          1.175 for     57 degrees of freedom 
    # Null hypothesis probability =   1.719174e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.728925 ( -0.291002  0.292142 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.0675e-08 ( -2.19113e-08  2.2839e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   69.904 sec. to   70.904 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -2.94291E-02     ( -5.81738   2.27395 )
    Epeak [keV] : 52.8608      ( -52.7837 -52.7837 )
    Norm@50keV  : 4.80460E-02    ( -0.0488054   113.36 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.72 using 59 PHA bins.
    # Reduced chi-squared =          1.174 for     56 degrees of freedom 
    # Null hypothesis probability =   1.756466e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.700476 ( -0.289556  0.294543 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.55955e-08 ( -2.10948e-08  2.43486e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   69.904 sec. to   70.904 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 5.00000   ( -6.97818   -5 )
    beta        : -2.06087    ( 2.06324   0.780027 )
    Epeak [keV] : 27.7997      ( -27.8002 18.8213 )
    Norm@50keV   : 400.423    ( -151.858   6.19032e+06 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.36 using 59 PHA bins.
    # Reduced chi-squared =          1.188 for     55 degrees of freedom 
    # Null hypothesis probability =   1.600418e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.699095 ( 6.30091  -0.288197 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 12.3644  (-4.51158  7.07395)
    R^2/D10^2   : 0.171401  (-0.171405   0.716865)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.15 using 59 PHA bins.
    # Reduced chi-squared =          1.161 for     57 degrees of freedom 
    # Null hypothesis probability =   1.902892e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.553e-09   3.545e-09
    25- 50  1.809e-08   1.137e-08
    50-150  1.696e-08   1.229e-08
    15-150  4.060e-08   2.667e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 116.322       (-77.9644      -113.262)
    Norm        : 3.15065       (-1.3543     2.30165)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.33 using 59 PHA bins.
    # Reduced chi-squared =          1.164 for     57 degrees of freedom 
    # Null hypothesis probability =   1.862404e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  8.216e-09   5.150e-09
    25- 50  1.462e-08   8.960e-09
    50-150  2.569e-08   1.953e-08
    15-150  4.852e-08   3.322e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.31090        (-7.50768      -7.50768)
    R1^2/D10^2  : 0.611725        (-0.591213      -0.591213)
    kT2 [keV]   : 18.3158        (-18.7502      -18.7502)
    R2^2/D10^2  : 2.73623E-02    (-0.0246268   0.701549)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.57 using 59 PHA bins.
    # Reduced chi-squared =          1.192 for     55 degrees of freedom 
    # Null hypothesis probability =   1.557779e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.310e-09   6.005e-09
    25- 50  1.672e-08   1.375e-08
    50-150  2.252e-08   1.606e-08
    15-150  4.654e-08   3.187e-08
    

    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: 1.83113     ( -0.173033   0.179093 )
    Norm@50keV  : 2.26815E-03    ( -0.000238312   0.000233496 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.98 using 59 PHA bins.
    # Reduced chi-squared =          1.087 for     57 degrees of freedom 
    # Null hypothesis probability =   3.030775e-01
     
    Photon flux (15-150 keV)    in 105.6 sec: 0.316399 ( -0.0296188  0.0296969 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.20305e-06 ( -2.31656e-07  2.34065e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.10712     ( -0.730971   0.0532213 )
    Epeak [keV] : 45.4836      (   )
    Norm@50keV  : 1.63506E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.89 using 59 PHA bins.
    # Reduced chi-squared =          1.105 for     56 degrees of freedom 
    # Null hypothesis probability =   2.741537e-01
     
    Photon flux (15-150 keV)    in 105.6 sec: 0.316728 ( -0.03013  0.029298 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.19774e-06 ( -2.27051e-07  2.36132e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.98684   ( 0.822499   1.98684 )
    beta        : -1.83108    ( 1.83112   0.173008 )
    Epeak [keV] : 392.881      ( -715.336 -715.336 )
    Norm@50keV   : 2.26856E-03    ( 0.822496   -0.00226837 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.98 using 59 PHA bins.
    # Reduced chi-squared =          1.127 for     55 degrees of freedom 
    # Null hypothesis probability =   2.412509e-01
     
    Photon flux (15-150 keV)    in 105.6 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    

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

    S(25-50 keV)  = 7.06e-07
    S(50-100 keV) = 7.90e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 97.5999999642372 sec.
    Hardness ratio (energy fluence ratio) = 1.11898
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.09392
    Count Ratio (50-100 keV) / (15-25 keV) = 0.751364
    

    Mask shadow pattern

    IMX = 7.367381570224313E-01, IMY = -4.558411472072452E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    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:
    -530.799400 -508.938600
    -239.000000 -33.480000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    184.3823 -24.6203    3.3  46.0  139.0   2.2952   3.5 ------	UNKNOWN                       
    243.9430  49.8100    2.3  53.2   -0.3   2.4977   5.0 ------	UNKNOWN                       
    172.5949  62.0443    2.8  41.8  -52.8   1.9001   4.2 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -33.480000 72.100590
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    210.2254  -1.5011    2.0  32.7   88.0   1.3936   5.8 ------	UNKNOWN                       
    177.1322 -23.9154    2.5  46.1  148.3   1.6839   4.6 ------	UNKNOWN                       
    222.4036  18.6487    2.2  34.0   44.7   1.0452   5.2 ------	UNKNOWN                       
    230.7848  25.6299    0.9  40.9   31.7   3.2012  13.0 ------	UNKNOWN                       
    165.6619  20.1341    2.3  19.3 -133.2   0.6254   5.0 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    132.500600 963.029400
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.4773  35.3190    8.9  22.5  -15.1   0.6221   1.3    1.7	Her X-1                       
    268.3977  -1.3906    4.6  45.3   46.8   4.7472   2.5    4.1	SW J1753.5-0127               
    219.6611  11.6989    2.8  17.5  145.0   1.9385   4.2 ------	UNKNOWN                       
    266.3162  42.3775    3.0  33.5  -23.0   2.1963   3.9 ------	UNKNOWN                       
    219.5471  66.1336    2.3  41.1  -80.9  12.2637   5.1 ------	UNKNOWN                       
    
    Plot creation:
    Sun May 31 01:28:45 EDT 2015