batgrbproduct Analysis for Trigger=668097

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Dec 24 13:19:29 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger668097/GCN5_download_cron
======================================================================

  Trigger: 00668097      Segment: 000

  BAT Trigger Time: 472540808   [s; MET]
      Trigger Stop: 472541128   [s; MET]
               UTC: 2015-12-23T05:19:52.407520    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 306.024531148319   Dec: 33.8741695771756  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.2
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.2

  Flight Position:   [ source = BAT ]
    RA: 306.024531148319   Dec: 33.8741695771756  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 306.018292290173   Dec: 33.8819467204425  [deg; J2000]  
        { 20h 24m 04.4s , +33d 52' 55.0" }
         +/- 2.62998420324015 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.24554173413735 [arcmin] (formal 1-sigma fit error)
    SNR: 7.64161798504678
 
  Angular difference between Flight and Ground position is 0.560648 arcmin
 
  Partial Coding Fraction: 0.8046875    [ including projection effects ]

  Duration
     T90: 320 +/- 
        Measured from: 0
                   to: 320     [s; relative to TRIGTIME]
     T50: 320 +/- 
        Measured from: 0
                   to: 320     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 320 second)
        Measured from: 0     
                   to: 320     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 320     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.803401   0.669817   0.331284   0.044344
           0.119939   0.122789   0.104411   0.087773 [error]
 Peak      0.803401   0.669817   0.331284   0.044344
           0.119939   0.122789   0.104411   0.087773 [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 2.17e-07 2.96e-07 2.98e-07 5.42e-07 9.86e-07 1.35e-06   erg/cm2
              Error 5.51e-08 5.59e-08 9.89e-08 3.58e-07 2.28e-07 4.71e-07   erg/cm2
Peak flux Power-law 2.21e-02 1.67e-02 8.37e-03 6.03e-03 4.99e-02 5.31e-02   ph/cm2/s
              Error 5.72e-03 3.11e-03 2.69e-03 3.69e-03 9.24e-03 1.00e-02   ph/cm2/s
 
Fluence   Cutoff-PL 2.16e-07 3.00e-07 2.96e-07 4.33e-07 9.73e-07 1.24e-06   erg/cm2
              Error 5.70e-08 6.95e-08 1.13e-07 4.83e-07 2.55e-07 5.70e-07   erg/cm2
Peak flux Cutoff-PL 2.19e-02 1.69e-02 8.35e-03 5.04e-03 4.98e-02 5.22e-02   ph/cm2/s
              Error 4.55e-03 3.87e-03 2.99e-03 5.19e-03 9.40e-03 1.09e-02   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.16e-02 1.70e-02 8.27e-03 4.33e-03 4.92e-02 5.12e-02   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    1.992    0.357    -      -           3.34e-04 8.13e-05   64.980 57
CPL   1.884    1.013      43.4    0.0      3.88e-04 0.00e+00   64.960 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.992    0.357    -      -           3.34e-04 8.13e-05   64.980 57
CPL   1.884    1.013      43.4    0.0      3.88e-04 0.00e+00   64.960 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  320.000    0.000  320.000
T90   320.000    0.000  320.000
T50   320.000    0.000  320.000
Peak  320.000    0.000  320.000
  • Click here for the BAT GCN circular template

    Image

    Pre-slew 15-350 keV image (Event data; bkg subtracted)

    #   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
      306.0183 +33.8819 0.0253   29.4    6.4       2.1624     7.6  TRIG_00668097       
    ------------------------------------------
     
    Foreground time interval of the image:
      0.000 320.000 (delta_t = 320.000 [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  320.000 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.99153     ( -0.339167   0.375008 )
    Norm@50keV  : 3.34125E-04    ( -8.31221e-05   7.95456e-05 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.98 using 59 PHA bins.
    # Reduced chi-squared =          1.140 for     57 degrees of freedom 
    # Null hypothesis probability =   2.185373e-01
     
    Photon flux (15-150 keV)    in 320 sec: 4.99245E-02 ( -0.0092448  0.00924486 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.85584e-07 ( -2.23808e-07  2.32777e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.000 sec. to  320.000 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.88413     ( -1.75977   0.266878 )
    Epeak [keV] : 43.3610      (   )
    Norm@50keV  : 3.87582E-04    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.96 using 59 PHA bins.
    # Reduced chi-squared =          1.160 for     56 degrees of freedom 
    # Null hypothesis probability =   1.927757e-01
     
    Photon flux (15-150 keV)    in 320 sec: 4.97578E-02 ( -0.0094327  0.0093603 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.7335e-07 ( -2.67261e-07  2.42707e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.000 sec. to  320.000 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.93517   ( 1.93517   1.76815 )
    beta        : -8.80807    ( 7.88017   17.8802 )
    Epeak [keV] : 40.4661      ( -40.4661 -40.4661 )
    Norm@50keV   : 3.63873E-04    ( -6.73669e-05   0.000164171 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.97 using 59 PHA bins.
    # Reduced chi-squared =          1.181 for     55 degrees of freedom 
    # Null hypothesis probability =   1.682798e-01
     
    Photon flux (15-150 keV)    in 320 sec: 4.92218E-02 (    ) 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]    : 8.76606  (-1.81591  2.33051)
    R^2/D10^2   : 3.83689E-02  (-0.0229961   0.0564354)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          71.43 using 59 PHA bins.
    # Reduced chi-squared =          1.253 for     57 degrees of freedom 
    # Null hypothesis probability =   9.464050e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.811e-07   6.787e-08
    25- 50  3.692e-07   1.191e-07
    50-150  1.299e-07   7.541e-08
    15-150  6.802e-07   2.243e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 64.6055       (-28.7923      78.5886)
    Norm        : 0.253726       (-0.0689522     0.102437)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.38 using 59 PHA bins.
    # Reduced chi-squared =          1.147 for     57 degrees of freedom 
    # Null hypothesis probability =   2.086326e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.063e-07   5.578e-08
    25- 50  3.210e-07   8.848e-08
    50-150  3.877e-07   2.180e-07
    15-150  9.150e-07   3.597e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 6.50995        (-2.50165      2.40797)
    R1^2/D10^2  : 0.101826        (-0.0674609      0.431097)
    kT2 [keV]   : 31.2546        (-19.0217      -32.1614)
    R2^2/D10^2  : 2.10295E-04    (-0.000199797   0.000834427)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.10 using 59 PHA bins.
    # Reduced chi-squared =          1.166 for     55 degrees of freedom 
    # Null hypothesis probability =   1.875154e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.145e-07   1.255e-07
    25- 50  3.051e-07   1.690e-07
    50-150  4.571e-07   2.810e-07
    15-150  9.766e-07   5.451e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.000 sec. to  320.000 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.99153     ( -0.339167   0.375008 )
    Norm@50keV  : 3.34125E-04    ( -8.31221e-05   7.95456e-05 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.98 using 59 PHA bins.
    # Reduced chi-squared =          1.140 for     57 degrees of freedom 
    # Null hypothesis probability =   2.185373e-01
     
    Photon flux (15-150 keV)    in 320 sec: 4.99245E-02 ( -0.0092448  0.00924486 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.85584e-07 ( -2.23808e-07  2.32777e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.000 sec. to  320.000 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.88413     ( -1.75977   0.266878 )
    Epeak [keV] : 43.3610      (   )
    Norm@50keV  : 3.87582E-04    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.96 using 59 PHA bins.
    # Reduced chi-squared =          1.160 for     56 degrees of freedom 
    # Null hypothesis probability =   1.927757e-01
     
    Photon flux (15-150 keV)    in 320 sec: 4.97578E-02 ( -0.0094327  0.0093603 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.7335e-07 ( -2.67261e-07  2.42707e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.000 sec. to  320.000 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.93517   ( 1.93517   1.76815 )
    beta        : -8.80807    ( 7.88017   17.8802 )
    Epeak [keV] : 40.4661      ( -40.4661 -40.4661 )
    Norm@50keV   : 3.63873E-04    ( -6.73669e-05   0.000164171 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.97 using 59 PHA bins.
    # Reduced chi-squared =          1.181 for     55 degrees of freedom 
    # Null hypothesis probability =   1.682798e-01
     
    Photon flux (15-150 keV)    in 320 sec: 4.92218E-02 (    ) 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]    : 8.76606  (-1.81591  2.33051)
    R^2/D10^2   : 3.83689E-02  (-0.0229961   0.0564354)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          71.43 using 59 PHA bins.
    # Reduced chi-squared =          1.253 for     57 degrees of freedom 
    # Null hypothesis probability =   9.464050e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.811e-07   6.115e-08
    25- 50  3.692e-07   1.293e-07
    50-150  1.299e-07   7.384e-08
    15-150  6.802e-07   2.216e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 64.6055       (-28.7923      78.5886)
    Norm        : 0.253726       (-0.0689522     0.102437)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.38 using 59 PHA bins.
    # Reduced chi-squared =          1.147 for     57 degrees of freedom 
    # Null hypothesis probability =   2.086326e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.063e-07   5.304e-08
    25- 50  3.210e-07   9.658e-08
    50-150  3.877e-07   2.253e-07
    15-150  9.150e-07   2.957e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 6.50995        (-2.50165      2.40797)
    R1^2/D10^2  : 0.101826        (-0.0674609      0.431097)
    kT2 [keV]   : 31.2546        (-19.0254      -32.1614)
    R2^2/D10^2  : 2.10295E-04    (-0.000199797   0.000834427)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.10 using 59 PHA bins.
    # Reduced chi-squared =          1.166 for     55 degrees of freedom 
    # Null hypothesis probability =   1.875154e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.145e-07   1.271e-07
    25- 50  3.051e-07   1.701e-07
    50-150  4.571e-07   2.918e-07
    15-150  9.766e-07   5.205e-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: 1.99153     ( -0.339167   0.375008 )
    Norm@50keV  : 3.34125E-04    ( -8.31221e-05   7.95456e-05 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.98 using 59 PHA bins.
    # Reduced chi-squared =          1.140 for     57 degrees of freedom 
    # Null hypothesis probability =   2.185373e-01
     
    Photon flux (15-150 keV)    in 320 sec: 4.99245E-02 ( -0.0092448  0.00924486 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.85584e-07 ( -2.23808e-07  2.32777e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.88413     ( -1.75977   0.266878 )
    Epeak [keV] : 43.3610      (   )
    Norm@50keV  : 3.87582E-04    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.96 using 59 PHA bins.
    # Reduced chi-squared =          1.160 for     56 degrees of freedom 
    # Null hypothesis probability =   1.927757e-01
     
    Photon flux (15-150 keV)    in 320 sec: 4.97578E-02 ( -0.0094327  0.0093603 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.7335e-07 ( -2.67261e-07  2.42707e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.93517   ( 1.93517   1.76815 )
    beta        : -8.80807    ( 7.88017   17.8802 )
    Epeak [keV] : 40.4661      ( -40.4661 -40.4661 )
    Norm@50keV   : 3.63873E-04    ( -6.73669e-05   0.000164171 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.97 using 59 PHA bins.
    # Reduced chi-squared =          1.181 for     55 degrees of freedom 
    # Null hypothesis probability =   1.682798e-01
     
    Photon flux (15-150 keV)    in 320 sec: 4.92218E-02 (    ) 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)  = 2.96e-07
    S(50-100 keV) = 2.98e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 320 sec.
    Hardness ratio (energy fluence ratio) = 1.00676
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.833727
    Count Ratio (50-100 keV) / (15-25 keV) = 0.412352
    

    Mask shadow pattern

    IMX = 5.597849545526488E-01, IMY = -6.253624457557976E-02
    

    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 320.000000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    288.8254  11.0107    3.0  36.8  -44.0   1.5489   3.8    4.2	GRS 1915+105                  
    299.5842  35.2033    0.4  34.2    1.5   8.8754  28.8    0.3	Cyg X-1                       
    308.2209  41.0489    3.7  33.9   17.5   1.1831   3.1    7.6	Cyg X-3                       
    326.1869  38.3351   24.7  27.2   42.1  -0.1577  -0.5    1.1	Cyg X-2                       
    357.0522  -5.1939    2.8  34.6  158.9   1.7613   4.2  358.2	UNKNOWN                       
    326.5663  25.9276    2.4  14.8   43.1   1.2395   4.8 ------	UNKNOWN                       
    306.0183  33.8819    1.5  29.4    6.4   2.1624   7.6 ------	UNKNOWN                       
    295.5958  33.2992    3.1  35.8   -4.5   1.2371   3.7 ------	UNKNOWN                       
    341.4217 -37.6099    2.7  50.7 -153.0   3.3126   4.3 ------	UNKNOWN                       
    269.1590  17.5535    2.8  55.6  -33.8   6.4143   4.1 ------	UNKNOWN                       
    274.7120   9.3878    2.9  50.8  -44.5   5.8601   4.0 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    768.200600 963.075100
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     82.2689  -7.1257    2.5  40.5  131.0   2.4174   4.6 ------	UNKNOWN                       
     75.6644  -5.8384    2.4  34.0  128.1   1.6524   4.9 ------	UNKNOWN                       
     72.9781 -14.1175    2.7  31.6  143.6   1.1499   4.3 ------	UNKNOWN                       
     64.0588 -50.6601    3.0  47.0 -160.6   1.4566   3.8 ------	UNKNOWN                       
     34.3261 -43.9777    2.5  37.0 -132.6   1.3357   4.6 ------	UNKNOWN                       
     40.8237 -49.6263    2.7  42.1 -140.5   1.3801   4.3 ------	UNKNOWN                       
     62.8342 -63.2555    3.6  57.8 -152.3   3.3479   3.2 ------	UNKNOWN                       
    351.4534   2.7757    2.4  51.0  -41.3   4.3303   4.9  539.0	UNKNOWN                       
    351.1959   0.4994    4.0  50.8  -44.3   2.7383   2.9  529.1	UNKNOWN                       
    
    Plot creation:
    Thu Dec 24 13:26:07 EST 2015