batgrbproduct Analysis for Trigger=330856

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Jan 19 22:13:35 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger330856
======================================================================

  Trigger: 00330856      Segment: 000

  BAT Trigger Time: 245049835.904   [s; MET]
      Trigger Stop: 245049836.928   [s; MET]
               UTC: 2008-10-07T05:23:52.748620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 339.976068527769   Dec: -40.1359411791978  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.43
     Image Trigger?:     NO
     Rate S/N Ratio:     14.7309198626562  [ if not an image trigger ]
     Image S/N Ratio:    9.43

  Flight Position:   [ source = BAT ]
    RA: 339.976068527769   Dec: -40.1359411791978  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 339.961059990733   Dec: -40.1464302164674  [deg; J2000]  
        { 22h 39m 50.7s , -40d 08' 47.1" }
         +/- 1.49604539789256 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.624444862624335 [arcmin] (formal 1-sigma fit error)
    SNR: 17.1079225864739
 
  Angular difference between Flight and Ground position is 0.932723 arcmin
 
  Partial Coding Fraction: 0.2890625    [ including projection effects ]

  Duration
     T90: 9.72799998521805 +/- 4.87409476255166
        Measured from: -4
                   to: 5.72799998521805     [s; relative to TRIGTIME]
     T50: 2.87999999523163 +/- 0.724077357253429
        Measured from: 0.671999990940094
                   to: 3.55199998617172     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.651999980211258     
                   to: 1.65199998021126     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -8.67200002074242     
                   to: 6.81599998474121     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.501372   0.600226   0.202319   0.036113
           0.041336   0.042711   0.038091   0.036664 [error]
 Peak      0.101936   0.110895   0.057007   0.016328
           0.011515   0.012305   0.010448   0.009477 [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 2.38e-07 2.50e-07 1.86e-07 2.24e-07 7.61e-07 8.99e-07   erg/cm2
              Error 2.95e-08 2.43e-08 3.52e-08 8.08e-08 8.16e-08 1.27e-07   erg/cm2
Peak flux Power-law 1.41e+00 9.38e-01 4.07e-01 2.43e-01 2.87e+00 3.00e+00   ph/cm2/s
              Error 2.56e-01 1.17e-01 9.05e-02 1.03e-01 3.61e-01 3.70e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.24e-07 2.75e-07 1.66e-07 5.07e-08 7.03e-07 7.15e-07   erg/cm2
              Error 3.29e-08 3.31e-08 4.65e-08 9.52e-08 9.25e-08 1.34e-07   erg/cm2
Peak flux Cutoff-PL 1.41e+00 9.37e-01 4.03e-01 2.39e-01 2.87e+00 3.00e+00   ph/cm2/s
              Error 2.71e-01 1.33e-01 9.08e-02 1.78e-01 3.63e-01 4.03e-01   ph/cm2/s
 
Fluence        Band 2.23e-07 2.70e-07 1.72e-07 6.31e-08 7.13e-07 7.33e-07   erg/cm2
              Error 3.25e-08 3.35e-08 -------- -------- -------- --------   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    2.426    0.194    -      -           5.00e-03 6.85e-04   40.960 57
CPL   1.520    0.791      20.1    0.0      1.78e-02 0.00e+00   37.360 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.204    0.253    -      -           1.73e-02 2.88e-03   66.670 57
CPL   1.986    0.000       3.1    0.0      2.26e-02 0.00e+00   66.880 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   15.488   -8.672    6.816
T90     9.728   -4.000    5.728
T50     2.880    0.672    3.552
Peak    1.000    0.652    1.652
  • Click here for the BAT GCN circular template
  • Special notes of this burst

    Image

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

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
      339.9611   -40.1464   0.0113    49.2996  -164.5106         1.4683001     17.108 TRIG_00330856                 
     
    Foreground time interval of the image:
     -8.672   6.816 (delta_t =  15.488 [sec])
    Background time interval of the image:
    -204.403 -198.624 (delta_t =   5.779 [sec])
    -197.904  -8.672 (delta_t = 189.232 [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 1.024000
    

    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 1.024000
    

    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 1.024000
    

    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)

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from   -8.672 sec. to    6.816 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.42622     ( -0.187765   0.201096 )
    Norm@50keV  : 5.00489E-03    ( -0.000690974   0.000679807 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          40.96 using 59 PHA bins.
    # Reduced chi-squared =         0.7186 for     57 degrees of freedom 
    # Null hypothesis probability =   9.460893e-01
     
    Photon flux (15-150 keV)    in 15.49 sec: 0.940439 ( -0.0870259  0.0870972 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.60863e-07 ( -8.08085e-08  8.24153e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -8.672 sec. to    6.816 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.51960     ( -1.10084   0.480412 )
    Epeak [keV] : 20.1390      (   )
    Norm@50keV  : 1.77689E-02    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          37.36 using 59 PHA bins.
    # Reduced chi-squared =         0.6672 for     56 degrees of freedom 
    # Null hypothesis probability =   9.738823e-01
     
    Photon flux (15-150 keV)    in 15.49 sec: 0.908206 ( -0.091486  0.091534 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.02512e-07 ( -8.93401e-08  9.56074e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -8.672 sec. to    6.816 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.537572   ( -1.7844   2.6452 )
    beta        : -2.91754    ( 2.90916   0.453441 )
    Epeak [keV] : 25.3331      ( -7.88335 5.77028 )
    Norm@50keV   : 8.52660E-02    ( -0.0775336   6.7199 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          36.81 using 59 PHA bins.
    # Reduced chi-squared =         0.6694 for     55 degrees of freedom 
    # Null hypothesis probability =   9.717856e-01
     
    Photon flux (15-150 keV)    in 15.49 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.12672e-07 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 7.81409  (-0.762042  0.854695)
    R^2/D10^2   : 1.10071  (-0.386513   0.592911)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.74 using 59 PHA bins.
    # Reduced chi-squared =         0.8901 for     57 degrees of freedom 
    # Null hypothesis probability =   7.076794e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.849e-07   2.754e-08
    25- 50  3.105e-07   3.857e-08
    50-150  7.542e-08   2.354e-08
    15-150  5.709e-07   7.288e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 36.5182       (-7.46505      10.1161)
    Norm        : 6.40499       (-1.1492     1.4689)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          37.44 using 59 PHA bins.
    # Reduced chi-squared =         0.6568 for     57 degrees of freedom 
    # Null hypothesis probability =   9.789709e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.205e-07   2.703e-08
    25- 50  2.784e-07   3.005e-08
    50-150  1.944e-07   5.463e-08
    15-150  6.932e-07   8.155e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.97742        (-1.4739      1.16828)
    R1^2/D10^2  : 2.66430        (-1.28471      4.52105)
    kT2 [keV]   : 18.0850        (-6.29185      12.5633)
    R2^2/D10^2  : 1.80663E-02    (-0.0159421   0.116989)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          37.15 using 59 PHA bins.
    # Reduced chi-squared =         0.6754 for     55 degrees of freedom 
    # Null hypothesis probability =   9.690118e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.132e-07   6.840e-08
    25- 50  2.777e-07   1.121e-07
    50-150  2.192e-07   1.238e-07
    15-150  7.101e-07   2.611e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.652 sec. to    1.652 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.20364     ( -0.241434   0.265146 )
    Norm@50keV  : 1.73202E-02    ( -0.00293752   0.00281943 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.67 using 59 PHA bins.
    # Reduced chi-squared =          1.170 for     57 degrees of freedom 
    # Null hypothesis probability =   1.786188e-01
     
    Photon flux (15-150 keV)    in 1 sec: 2.87292 ( -0.36028  0.360812 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.62927e-07 ( -2.33419e-08  2.37262e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.652 sec. to    1.652 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.98568     (     )
    Epeak [keV] : 3.10850      (   )
    Norm@50keV  : 2.26230E-02    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.88 using 59 PHA bins.
    # Reduced chi-squared =          1.194 for     56 degrees of freedom 
    # Null hypothesis probability =   1.514796e-01
     
    Photon flux (15-150 keV)    in 1 sec: 2.87372 ( -0.37008  0.35523 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.62833e-07 ( -2.5115e-08  2.3708e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.652 sec. to    1.652 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.85753   ( 1.85721   1.85721 )
    beta        : -2.20358    ( 2.20361   0.241627 )
    Epeak [keV] : 5.16558      ( -5.12653 -5.12653 )
    Norm@50keV   : 3.95025E-02    ( -0.022304   2.69759 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.67 using 59 PHA bins.
    # Reduced chi-squared =          1.212 for     55 degrees of freedom 
    # Null hypothesis probability =   1.345690e-01
     
    Photon flux (15-150 keV)    in 1 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]    : 9.30796  (-1.44316  1.68551)
    R^2/D10^2   : 1.66916  (-0.801063   1.58581)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          87.07 using 59 PHA bins.
    # Reduced chi-squared =          1.528 for     57 degrees of freedom 
    # Null hypothesis probability =   6.327508e-03
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.862e-08   6.525e-09
    25- 50  6.407e-08   1.077e-08
    50-150  2.707e-08   9.280e-09
    15-150  1.197e-07   2.293e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 53.6402       (-16.1167      27.3278)
    Norm        : 15.4360       (-3.18233     4.39259)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          69.02 using 59 PHA bins.
    # Reduced chi-squared =          1.211 for     57 degrees of freedom 
    # Null hypothesis probability =   1.319963e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.832e-08   6.250e-09
    25- 50  5.638e-08   8.305e-09
    50-150  5.840e-08   1.896e-08
    15-150  1.531e-07   2.460e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.25168        (-1.81754      1.8482)
    R1^2/D10^2  : 29.5165        (-24.0399      536.308)
    kT2 [keV]   : 16.2476        (-4.79462      10.8142)
    R2^2/D10^2  : 0.143397    (-0.123486   0.35451)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.59 using 59 PHA bins.
    # Reduced chi-squared =          1.247 for     55 degrees of freedom 
    # Null hypothesis probability =   1.029487e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.360e-08   2.322e-08
    25- 50  4.858e-08   2.304e-08
    50-150  6.197e-08   3.687e-08
    15-150  1.542e-07   7.614e-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: 2.42622     ( -0.187765   0.201096 )
    Norm@50keV  : 5.00489E-03    ( -0.000690974   0.000679807 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          40.96 using 59 PHA bins.
    # Reduced chi-squared =         0.7186 for     57 degrees of freedom 
    # Null hypothesis probability =   9.460893e-01
     
    Photon flux (15-150 keV)    in 15.49 sec: 0.940439 ( -0.0870259  0.0870972 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.60863e-07 ( -8.08085e-08  8.24153e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.51960     ( -1.10084   0.480412 )
    Epeak [keV] : 20.1390      (   )
    Norm@50keV  : 1.77689E-02    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          37.36 using 59 PHA bins.
    # Reduced chi-squared =         0.6672 for     56 degrees of freedom 
    # Null hypothesis probability =   9.738823e-01
     
    Photon flux (15-150 keV)    in 15.49 sec: 0.908206 ( -0.091486  0.091534 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.02512e-07 ( -8.93401e-08  9.56074e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.537572   ( -2.12678   2.64441 )
    beta        : -2.91754    ( 2.90916   0.453441 )
    Epeak [keV] : 25.3331      ( -7.88335 5.77028 )
    Norm@50keV   : 8.52660E-02    ( -0.0775336   6.7199 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          36.81 using 59 PHA bins.
    # Reduced chi-squared =         0.6694 for     55 degrees of freedom 
    # Null hypothesis probability =   9.717856e-01
     
    Photon flux (15-150 keV)    in 15.49 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.12672e-07 ( 0  0 ) ergs/cm2
     
    

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

    S(25-50 keV)  = 2.50e-07
    S(50-100 keV) = 1.86e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 9.72799998521805 sec.
    Hardness ratio (energy fluence ratio) = 0.744
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.19717
    Count Ratio (50-100 keV) / (15-25 keV) = 0.403531
    

    Mask shadow pattern

    IMX = -1.120363818542023E+00, IMY = 3.104811782056601E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    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:
    -204.403400 -198.624100
    -197.904000 -8.672000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    299.5884  35.1993    1.1  49.6  -41.1   6.9985  10.7    0.2	Cyg X-1                       
    308.2395  41.0346    4.0  46.2  -29.9   0.9518   2.9    7.6	Cyg X-3                       
    326.0271  38.2538    4.5  34.3  -18.4   0.4569   2.6    7.9	Cyg X-2                       
     25.3825  -0.0702    2.0  40.4  110.3   3.2867   5.7 ------	UNKNOWN                       
      2.7588  39.6345    2.4  34.3   33.2   0.9805   4.9 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -8.672000 6.816000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    299.5741  35.2181    7.0  49.6  -41.1  -0.2487  -1.6    1.3	Cyg X-1                       
    308.2714  40.9547    5.3  46.1  -30.0  -0.1829  -2.2    7.3	Cyg X-3                       
    326.0207  38.2735    4.8  34.4  -18.4  -0.1136  -2.4    7.7	Cyg X-2                       
     21.5633 -22.6317    2.2  47.1  142.2   0.8246   5.3 ------	UNKNOWN                       
     11.8276  -8.1490    2.8  31.0  132.1   0.2286   4.0 ------	UNKNOWN                       
    339.9611 -40.1464    0.7  49.3 -164.5   1.4683  17.1 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    87.596590 962.124100
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    284.9661 -25.0707   12.0  47.9  -40.7   1.6641   1.0    9.8	HT1900.1-2455                 
     52.8020 -77.2770    3.3  47.3 -148.1   3.4553   3.5 ------	UNKNOWN                       
    
    Plot creation:
    Sun May 31 06:09:13 EDT 2015