batgrbproduct Analysis for Trigger=211957

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jan 22 16:04:14 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger211957
======================================================================

  Trigger: 00211957      Segment: 000

  BAT Trigger Time: 170353711.168   [s; MET]
      Trigger Stop: 170353711.68   [s; MET]
               UTC: 2006-05-26T16:28:29.950920    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 232.845565859311   Dec: 0.244218930890226  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.05
     Image Trigger?:     NO
     Rate S/N Ratio:     20.3469899493758  [ if not an image trigger ]
     Image S/N Ratio:    9.05

  Flight Position:   [ source = BAT ]
    RA: 232.845565859311   Dec: 0.244218930890226  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 232.833766596179   Dec: 0.295772893378037  [deg; J2000]  
        { 15h 31m 20.1s , +00d 17' 44.8" }
         +/- 1.40856022592367 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.642721206825804 [arcmin] (formal 1-sigma fit error)
    SNR: 18.6458447751036
 
  Angular difference between Flight and Ground position is 3.173218 arcmin
 
  Partial Coding Fraction: 0.6171875    [ including projection effects ]

  Duration
     T90: 298.040000021458 +/- 22.8986889494558
        Measured from: 0.355999976396561
                   to: 298.395999997854     [s; relative to TRIGTIME]
     T50: 249.256000012159 +/- 8.11129977774405
        Measured from: 7.52399998903275
                   to: 256.780000001192     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.143999993801117     
                   to: 1.14399999380112     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.36000001430511     
                   to: 310.17199999094     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.004617   0.783562   0.634497   0.179950
           0.085851   0.083869   0.074418   0.067353 [error]
 Peak      0.042449   0.078881   0.070239   0.019653
           0.006582   0.007346   0.006651   0.005146 [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 2.77e-07 3.85e-07 3.95e-07 7.42e-07 1.29e-06 1.80e-06   erg/cm2
              Error 4.34e-08 3.88e-08 7.61e-08 2.95e-07 1.66e-07 3.68e-07   erg/cm2
Peak flux Power-law 4.75e-01 5.38e-01 4.37e-01 5.92e-01 1.67e+00 2.04e+00   ph/cm2/s
              Error 8.57e-02 6.08e-02 5.33e-02 1.47e-01 1.73e-01 2.18e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.79e-07 3.85e-07 3.92e-07 7.20e-07 1.29e-06 1.78e-06   erg/cm2
              Error 4.23e-08 3.86e-08 7.47e-08 2.15e-07 1.57e-07 3.71e-07   erg/cm2
Peak flux Cutoff-PL 3.90e-01 5.82e-01 4.76e-01 2.42e-01 1.61e+00 1.69e+00   ph/cm2/s
              Error 1.05e-01 7.37e-02 6.44e-02 1.79e-01 1.80e-01 2.52e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 3.82e-01 5.89e-01 4.68e-01 3.45e-01 1.60e+00 1.78e+00   ph/cm2/s
              Error 1.11e-01 8.11e-02 6.95e-02 -------- 1.80e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.961    0.222    -      -           4.52e-04 6.05e-05   66.050 57
CPL   2.130    0.000      54.7    0.0      3.54e-04 0.00e+00   64.210 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.300    0.169    -      -           1.40e-02 1.43e-03   70.110 57
CPL   0.336    0.843      89.8   75.2      4.12e-02 4.78e-02   65.210 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: 254.208000 sec.
T50 in the 50-300 keV band: 245.312000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  311.532   -1.360  310.172
T90   298.040    0.356  298.396
T50   249.256    7.524  256.780
Peak    1.000    0.144    1.144
  • 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
      232.8338     0.2958   0.0103    24.8540    52.1007         0.7632742     18.646 TRIG_00211957                 
     
    Foreground time interval of the image:
     -1.360   9.933 (delta_t =  11.293 [sec])
    Background time interval of the image:
    -239.168  -1.360 (delta_t = 237.808 [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 0.512000
    

    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 0.512000
    

    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 0.512000
    

    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
    Multiple GTIs in the spectrum
    tstart tstop
    -1.360000 79.842100
    80.832000 310.172000
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.96077     ( -0.215901   0.227342 )
    Norm@50keV  : 4.52427E-04    ( -6.1674e-05   5.92804e-05 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.05 using 59 PHA bins.
    # Reduced chi-squared =          1.159 for     57 degrees of freedom 
    # Null hypothesis probability =   1.925837e-01
     
    Photon flux (15-150 keV)    in 310.5 sec: 6.66686E-02 ( -0.00671346  0.00671697 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.29324e-06 ( -1.6391e-07  1.68183e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Multiple GTIs in the spectrum
    tstart tstop
    -1.360000 79.842100
    80.832000 310.172000
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.13036     (     )
    Epeak [keV] : 54.7067      (   )
    Norm@50keV  : 3.54129E-04    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.21 using 59 PHA bins.
    # Reduced chi-squared =          1.147 for     56 degrees of freedom 
    # Null hypothesis probability =   2.109898e-01
     
    Photon flux (15-150 keV)    in 310.5 sec: 6.66281E-02 ( -0.0066795  0.0067103 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.2874e-06 ( -1.56712e-07  1.5679e-07 ) ergs/cm2
     
    
    Band function
    Multiple GTIs in the spectrum
    tstart tstop
    -1.360000 79.842100
    80.832000 310.172000
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.51798   ( 1.51949   1.51949 )
    beta        : -1.96051    ( -0.248307   0.215784 )
    Epeak [keV] : 14.0866      ( -13.6202 -13.6202 )
    Norm@50keV   : 1.28126E-03    ( -0.00129199   0.00355244 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.05 using 59 PHA bins.
    # Reduced chi-squared =          1.201 for     55 degrees of freedom 
    # Null hypothesis probability =   1.461424e-01
     
    Photon flux (15-150 keV)    in 310.5 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]    : 8.09078  (  )
    R^2/D10^2   : 6.35871E-02  (   )
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         117.55 using 59 PHA bins.
    # Reduced chi-squared =         2.0624 for     57 degrees of freedom 
    # Null hypothesis probability =   4.276645e-06
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.356e-07   4.932e-08
    25- 50  4.206e-07   6.676e-08
    50-150  1.146e-07   4.286e-08
    15-150  7.708e-07   1.275e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 83.8727       (-29.3943      61.0568)
    Norm        : 0.300063       (-0.0474493     0.0654693)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          74.41 using 59 PHA bins.
    # Reduced chi-squared =          1.305 for     57 degrees of freedom 
    # Null hypothesis probability =   6.055912e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.424e-07   3.647e-08
    25- 50  4.036e-07   4.580e-08
    50-150  5.877e-07   2.644e-07
    15-150  1.234e-06   3.044e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.88859        (-0.748236      0.865926)
    R1^2/D10^2  : 0.423597        (-0.215108      0.478244)
    kT2 [keV]   : 28.4794        (-6.96855      12.9215)
    R2^2/D10^2  : 5.61171E-04    (-0.000372247   0.00083582)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.15 using 59 PHA bins.
    # Reduced chi-squared =          1.021 for     55 degrees of freedom 
    # Null hypothesis probability =   4.315868e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.148e-07   1.170e-07
    25- 50  3.180e-07   9.146e-08
    50-150  8.100e-07   4.551e-07
    15-150  1.443e-06   4.987e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.144 sec. to    1.144 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.29997     ( -0.168861   0.168911 )
    Norm@50keV  : 1.39663E-02    ( -0.00142914   0.00142761 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          70.11 using 59 PHA bins.
    # Reduced chi-squared =          1.230 for     57 degrees of freedom 
    # Null hypothesis probability =   1.139140e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.66621 ( -0.172497  0.172704 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.38013e-07 ( -1.56888e-08  1.5822e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.144 sec. to    1.144 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.336056     ( -0.92838   0.757631 )
    Epeak [keV] : 89.7918      ( -22.1984 128.223 )
    Norm@50keV  : 4.12090E-02    ( -0.0232476   0.0722748 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.21 using 59 PHA bins.
    # Reduced chi-squared =          1.164 for     56 degrees of freedom 
    # Null hypothesis probability =   1.871355e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.60521 ( -0.18073  0.17958 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.29933e-07 ( -1.7227e-08  1.7295e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.144 sec. to    1.144 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.153815   ( -0.927402   2.53461 )
    beta        : -2.02961    ( 2.02769   0.64242 )
    Epeak [keV] : 80.0206      ( -38.5248 119.18 )
    Norm@50keV   : 5.23531E-02    ( -0.0527775   2.46606 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.12 using 59 PHA bins.
    # Reduced chi-squared =          1.184 for     55 degrees of freedom 
    # Null hypothesis probability =   1.651166e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.60125 ( 5.39875  -0.18035 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.30194e-07 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 16.8204  (-1.90501  2.22507)
    R^2/D10^2   : 0.137483  (-0.0474881   0.0696114)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          73.48 using 59 PHA bins.
    # Reduced chi-squared =          1.289 for     57 degrees of freedom 
    # Null hypothesis probability =   6.987515e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.945e-09   1.532e-09
    25- 50  3.485e-08   5.160e-09
    50-150  7.016e-08   1.276e-08
    15-150  1.130e-07   1.562e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (      )
    Norm        : 6.89314       (-0.705735     0.705706)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          73.66 using 59 PHA bins.
    # Reduced chi-squared =          1.292 for     57 degrees of freedom 
    # Null hypothesis probability =   6.793333e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.716e-08   5.515e-09
    25- 50  3.302e-08   1.731e-08
    50-150  7.241e-08   3.935e-08
    15-150  1.226e-07   5.764e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 8.44592        (-7.36691      -8.53789)
    R1^2/D10^2  : 0.622429        (-0.429964      0)
    kT2 [keV]   : 23.9883        (-7.70592      -24.4177)
    R2^2/D10^2  : 3.20451E-02    (-0.0291323   0.112264)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.12 using 59 PHA bins.
    # Reduced chi-squared =          1.202 for     55 degrees of freedom 
    # Null hypothesis probability =   1.449309e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.161e-08   6.500e-09
    25- 50  3.416e-08   1.814e-08
    50-150  8.291e-08   4.440e-08
    15-150  1.287e-07   6.610e-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: 1.61819     ( -0.159298   0.1624 )
    Norm@50keV  : 4.09856E-03    ( -0.000389843   0.000384946 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          41.28 using 59 PHA bins.
    # Reduced chi-squared =         0.7242 for     57 degrees of freedom 
    # Null hypothesis probability =   9.418893e-01
     
    Photon flux (15-150 keV)    in 11.29 sec: 0.529695 ( -0.0466504  0.0466948 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.31822e-07 ( -4.41577e-08  4.47058e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.58957     (     )
    Epeak [keV] : 684.775      (   )
    Norm@50keV  : 4.24386E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          41.27 using 59 PHA bins.
    # Reduced chi-squared =         0.7370 for     56 degrees of freedom 
    # Null hypothesis probability =   9.295187e-01
     
    Photon flux (15-150 keV)    in 11.29 sec: 0.528456 ( -0.048112  0.047687 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.30007e-07 ( -4.85188e-08  4.62867e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.22011   ( 1.21851   6.21284 )
    beta        : -1.62622    ( 1.63028   0.169034 )
    Epeak [keV] : 45.9480      ( -45.0763 -45.0763 )
    Norm@50keV   : 8.30571E-03    ( -0.00522275   0 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          41.20 using 59 PHA bins.
    # Reduced chi-squared =         0.7491 for     55 degrees of freedom 
    # Null hypothesis probability =   9.162532e-01
     
    Photon flux (15-150 keV)    in 11.29 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)  = 3.85e-07
    S(50-100 keV) = 3.95e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 298.040000021458 sec.
    Hardness ratio (energy fluence ratio) = 1.02597
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.779961
    Count Ratio (50-100 keV) / (15-25 keV) = 0.631581
    

    Mask shadow pattern

    IMX = 2.845381887767856E-01, IMY = -3.655144875083937E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    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:
    -239.168000 -1.360000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.2914  35.3213   84.8  51.8   -0.4   0.0563   0.1    8.2	Her X-1                       
    166.0482 -30.8355    2.7  54.2  177.0   2.4392   4.2 ------	UNKNOWN                       
    214.0225  55.7399    2.7  50.7  -44.5   3.4892   4.2 ------	UNKNOWN                       
    206.6188  53.5641    3.0  48.4  -50.0   3.3319   3.9 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -1.360000 9.932600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.5850  35.2875    4.6  52.0   -0.2   0.2192   2.5    7.1	Her X-1                       
    232.8338   0.2957    0.6  24.9   52.1   0.7633  18.6 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    59.332650 79.842100
    80.832000 962.923200
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    244.9741 -15.6363    0.2  19.9   78.6  31.0780  50.4    0.4	Sco X-1                       
    254.6990  35.2475    0.0  40.5  -37.1   0.9651   1.1   13.1	Her X-1                       
    262.9527 -24.7708    5.6  38.4   67.9   3.3680   2.1    3.4	GX 1+4                        
    268.3854  -1.5452    2.5  35.6   28.0   3.5794   4.6    5.7	SW J1753.5-0127               
    274.0269 -14.0600    3.0  43.2   46.1   5.6933   3.9    1.9	GX 17+2                       
    
    Plot creation:
    Sun May 31 13:02:52 EDT 2015