batgrbproduct Analysis for Trigger=678197

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Mar  8 13:08:28 EST 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger678197/GCN5_download_cron
======================================================================

  Trigger: 00678197      Segment: 000

  BAT Trigger Time: 479059304   [s; MET]
      Trigger Stop: 479059368   [s; MET]
               UTC: 2016-03-07T16:01:28.054460    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 75.1553666430309   Dec: 45.0788117010882  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.29
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    6.29

  Flight Position:   [ source = BAT ]
    RA: 75.1553666430309   Dec: 45.0788117010882  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 75.0966816252204   Dec: 45.0977631873392  [deg; J2000]  
        { 05h 00m 23.2s , +45d 05' 51.9" }
         +/- 4.46932305108502 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.54143984767847 [arcmin] (formal 1-sigma fit error)
    SNR: 3.58262702788193
 
  Angular difference between Flight and Ground position is 2.733668 arcmin
 
  Partial Coding Fraction: 0.2285156    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.258145   0.505572  -0.009019  -0.236324
           0.095561   0.098203   0.086355   0.075435 [error]
 Peak      0.258145   0.505572  -0.009019  -0.236324
           0.095561   0.098203   0.086355   0.075435 [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 1.42e-07 1.33e-07 8.64e-08 8.50e-08 3.96e-07 4.41e-07   erg/cm2
              Error 5.60e-08 5.10e-08 5.68e-08 1.14e-07 1.61e-07 2.12e-07   erg/cm2
Peak flux Power-law 7.33e-02 3.82e-02 1.24e-02 5.11e-03 1.27e-01 1.29e-01   ph/cm2/s
              Error 2.92e-02 1.47e-02 7.97e-03 6.43e-03 4.52e-02 4.61e-02   ph/cm2/s
 
Fluence   Cutoff-PL 8.13e-08 2.68e-07 1.65e-08 2.76e-13 3.66e-07 3.67e-07   erg/cm2
              Error 4.54e-08 8.27e-08 3.28e-08 2.27e-10 7.94e-08 1.06e-07   erg/cm2
Peak flux Cutoff-PL 3.75e-02 7.84e-02 3.03e-03 2.92e-08 1.19e-01 1.19e-01   ph/cm2/s
              Error 2.26e-02 2.29e-02 5.39e-03 2.06e-05 3.56e-02 3.56e-02   ph/cm2/s
 
Fluence        Band 1.10e-07 2.44e-07 3.62e-08 2.89e-10 3.92e-07 3.92e-07   erg/cm2
              Error 4.35e-08 -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 5.55e-02 7.25e-02 6.65e-03 2.82e-05 1.33e-01 1.33e-01   ph/cm2/s
              Error 2.75e-02 2.19e-02 -------- 1.36e-03 -------- 3.93e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.628    0.618    -      -           5.94e-04 3.10e-04   59.550 57
CPL -10.000    0.000      32.4    0.0      5.81e+04 0.00e+00   46.440 56
 
The chi2 of BB fit is 49.98 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    2.628    0.618    -      -           5.94e-04 3.10e-04   59.550 57
CPL -10.000    0.000      32.4    0.0      5.81e+04 0.00e+00   46.440 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000
  • 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
       75.0967 +45.0978 0.0536   51.3 -164.7       0.6732     3.6  TRIG_00678197       
    ------------------------------------------
     
    Foreground time interval of the image:
      0.000  64.000 (delta_t =  64.000 [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   64.000 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.62806     ( -0.537913   0.697654 )
    Norm@50keV  : 5.94228E-04    ( -0.000299744   0.000319491 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.55 using 59 PHA bins.
    # Reduced chi-squared =          1.045 for     57 degrees of freedom 
    # Null hypothesis probability =   3.828552e-01
     
    Photon flux (15-150 keV)    in 64 sec: 0.126749 ( -0.0451387  0.0452131 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.95508e-07 ( -1.54265e-07  1.68091e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.000 sec. to   64.000 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -10.0000     (     )
    Epeak [keV] : 32.4247      (   )
    Norm@50keV  : 5.81328E+04    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          46.44 using 59 PHA bins.
    # Reduced chi-squared =         0.8293 for     56 degrees of freedom 
    # Null hypothesis probability =   8.149954e-01
     
    Photon flux (15-150 keV)    in 64 sec: 0.118950 0.117724 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.26584e-17 ( 0  0 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.000 sec. to   64.000 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 5.00000   ( -3.99495   -5 )
    beta        : -9.37167    ( 9.37167   19.3041 )
    Epeak [keV] : 32.0823      ( -4.91013 5.52944 )
    Norm@50keV   : 40.8846    ( -11.7007   79.7494 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.91 using 59 PHA bins.
    # Reduced chi-squared =         0.8711 for     55 degrees of freedom 
    # Null hypothesis probability =   7.399513e-01
     
    Photon flux (15-150 keV)    in 64 sec: 0.133176 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.92114e-07 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 7.99754  (-1.68808  2.12285)
    R^2/D10^2   : 0.171559  (-0.108851   0.280746)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
    # Reduced chi-squared =         0.8768 for     57 degrees of freedom 
    # Null hypothesis probability =   7.335776e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.270e-07   7.846e-08
    25- 50  2.221e-07   1.343e-07
    50-150  5.826e-08   4.614e-08
    15-150  4.073e-07   2.483e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 29.4882       (-11.9997      22.5998)
    Norm        : 1.14103       (-0.494558     0.878443)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.88 using 59 PHA bins.
    # Reduced chi-squared =         0.9628 for     57 degrees of freedom 
    # Null hypothesis probability =   5.550935e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.473e-07   9.104e-08
    25- 50  1.667e-07   1.055e-07
    50-150  8.925e-08   7.307e-08
    15-150  4.033e-07   2.467e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.99245        (-7.99388      -7.99388)
    R1^2/D10^2  : 5.10039E-02        (-0.051134      -0.051134)
    kT2 [keV]   : 8.00211        (-7.99607      -7.99607)
    R2^2/D10^2  : 0.120395    (-0.120567   -0.120567)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
    # Reduced chi-squared =         0.9087 for     55 degrees of freedom 
    # Null hypothesis probability =   6.664526e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.269e-07   1.063e+01
    25- 50  2.221e-07   8.685e+01
    50-150  5.830e-08   2.118e+03
    15-150  4.073e-07   2.164e+03
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.000 sec. to   64.000 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.62806     ( -0.537913   0.697654 )
    Norm@50keV  : 5.94228E-04    ( -0.000299744   0.000319491 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.55 using 59 PHA bins.
    # Reduced chi-squared =          1.045 for     57 degrees of freedom 
    # Null hypothesis probability =   3.828552e-01
     
    Photon flux (15-150 keV)    in 64 sec: 0.126749 ( -0.0451387  0.0452131 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.95508e-07 ( -1.54265e-07  1.68091e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.000 sec. to   64.000 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -10.0000     (     )
    Epeak [keV] : 32.4247      (   )
    Norm@50keV  : 5.81328E+04    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          46.44 using 59 PHA bins.
    # Reduced chi-squared =         0.8293 for     56 degrees of freedom 
    # Null hypothesis probability =   8.149954e-01
     
    Photon flux (15-150 keV)    in 64 sec: 0.118950 0.117724 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.26584e-17 ( 0  0 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.000 sec. to   64.000 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 5.00000   ( -3.99495   -5 )
    beta        : -9.37167    ( 9.37167   19.3041 )
    Epeak [keV] : 32.0823      ( -4.91013 5.52944 )
    Norm@50keV   : 40.8846    ( -11.7007   79.7494 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.91 using 59 PHA bins.
    # Reduced chi-squared =         0.8711 for     55 degrees of freedom 
    # Null hypothesis probability =   7.399513e-01
     
    Photon flux (15-150 keV)    in 64 sec: 0.133176 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.92114e-07 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 7.99754  (-1.68808  2.12285)
    R^2/D10^2   : 0.171559  (-0.108851   0.280746)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
    # Reduced chi-squared =         0.8768 for     57 degrees of freedom 
    # Null hypothesis probability =   7.335776e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.270e-07   7.904e-08
    25- 50  2.221e-07   1.360e-07
    50-150  5.826e-08   4.214e-08
    15-150  4.073e-07   2.563e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 29.4882       (-11.9997      22.5998)
    Norm        : 1.14103       (-0.494558     0.878443)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.88 using 59 PHA bins.
    # Reduced chi-squared =         0.9628 for     57 degrees of freedom 
    # Null hypothesis probability =   5.550935e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.473e-07   8.345e-08
    25- 50  1.667e-07   1.024e-07
    50-150  8.925e-08   7.312e-08
    15-150  4.033e-07   2.469e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.99245        (-7.99388      -7.99388)
    R1^2/D10^2  : 5.10039E-02        (-0.051134      -0.051134)
    kT2 [keV]   : 8.00211        (-7.99607      -7.99607)
    R2^2/D10^2  : 0.120395    (-0.120567   -0.120567)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
    # Reduced chi-squared =         0.9087 for     55 degrees of freedom 
    # Null hypothesis probability =   6.664526e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.269e-07   1.057e+01
    25- 50  2.221e-07   8.867e+01
    50-150  5.830e-08   2.032e+03
    15-150  4.073e-07   2.417e+03
    

    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: 2.62806     ( -0.537913   0.697654 )
    Norm@50keV  : 5.94228E-04    ( -0.000299744   0.000319491 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.55 using 59 PHA bins.
    # Reduced chi-squared =          1.045 for     57 degrees of freedom 
    # Null hypothesis probability =   3.828552e-01
     
    Photon flux (15-150 keV)    in 64 sec: 0.126749 ( -0.0451387  0.0452131 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.95508e-07 ( -1.54265e-07  1.68091e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -10.0000     (     )
    Epeak [keV] : 32.4247      (   )
    Norm@50keV  : 5.81328E+04    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          46.44 using 59 PHA bins.
    # Reduced chi-squared =         0.8293 for     56 degrees of freedom 
    # Null hypothesis probability =   8.149954e-01
     
    Photon flux (15-150 keV)    in 64 sec: 0.118950 0.117724 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.26584e-17 ( 0  0 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 5.00000   ( -3.99495   -5 )
    beta        : -9.37167    ( 9.37167   19.3041 )
    Epeak [keV] : 32.0823      ( -4.91013 5.52944 )
    Norm@50keV   : 40.8846    ( -11.7007   79.7494 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.91 using 59 PHA bins.
    # Reduced chi-squared =         0.8711 for     55 degrees of freedom 
    # Null hypothesis probability =   7.399513e-01
     
    Photon flux (15-150 keV)    in 64 sec: 0.133176 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.92114e-07 ( 0  0 ) ergs/cm2
     
    

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

    S(25-50 keV)  = 1.33e-07
    S(50-100 keV) = 8.64e-08
    

    T90 vs. Hardness ratio plot

    T90                                   = 64 sec.
    Hardness ratio (energy fluence ratio) = 0.649624
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.95848
    Count Ratio (50-100 keV) / (15-25 keV) = -0.0349377
    

    Mask shadow pattern

    IMX = -1.203357175406024E+00, IMY = 3.291725126380255E-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 64.000000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.4774  35.3351  323.6  49.6   -0.5  -0.0064  -0.0    1.1	Her X-1                       
    194.6629  43.9421    2.5  34.7   67.3   0.7505   4.6 ------	UNKNOWN                       
    108.6929  35.5067    2.0  54.5  161.3   2.4787   5.8 ------	UNKNOWN                       
     91.5537  46.3564    2.5  47.3 -179.0   0.7407   4.6 ------	UNKNOWN                       
    349.2918  59.6850    3.1  40.8  -93.5   1.3920   3.8 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    567.200600 963.078700
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    299.5970  35.1977    0.4  38.0   -6.5  11.7493  27.8    0.4	Cyg X-1                       
    308.1561  40.9420    1.5  29.3   -9.6   2.3211   7.6    2.2	Cyg X-3                       
    326.2201  38.3665    2.5  23.9  -39.2   1.3658   4.5    3.5	Cyg X-2                       
     35.0809  71.1330    2.9  23.3  140.2   1.3457   3.9 ------	UNKNOWN                       
     70.7554  40.3236    3.3  54.2  171.3   5.1467   3.5 ------	UNKNOWN                       
    327.3722  63.1368    2.7   9.6   45.2   1.1792   4.3 ------	UNKNOWN                       
    320.1217  59.1675    2.5  12.9   23.5   1.1710   4.6 ------	UNKNOWN                       
    351.5681  18.3173    3.3  40.9  -87.5   5.8045   3.5 ------	UNKNOWN                       
    
    Plot creation:
    Tue Mar  8 13:14:01 EST 2016