batgrbproduct Analysis for Trigger=643833

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Jun 15 10:26:43 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger643833/batgroup_hand_proc
======================================================================

  Trigger: 00643833      Segment: 000

  BAT Trigger Time: 456036160.768   [s; MET]
      Trigger Stop: 456036168.96   [s; MET]
               UTC: 2015-06-15T04:42:27.048040    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 107.570242386832   Dec: -22.471915183491  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.52
     Image Trigger?:     NO
     Rate S/N Ratio:     14.142135623731  [ if not an image trigger ]
     Image S/N Ratio:    10.52

  Flight Position:   [ source = BAT ]
    RA: 107.570242386832   Dec: -22.471915183491  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 107.553505090884   Dec: -22.4659914426876  [deg; J2000]  
        { 07h 10m 12.8s , -22d 27' 57.6" }
         +/- 1.8114120222734 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.944971084013098 [arcmin] (formal 1-sigma fit error)
    SNR: 13.0173419843234
 
  Angular difference between Flight and Ground position is 0.993738 arcmin
 
  Partial Coding Fraction: 0.8515625    [ including projection effects ]

  Duration
     T90: 27.5519999861717 +/- 5.14136982655636
        Measured from: -2.0120000243187
                   to: 25.539999961853     [s; relative to TRIGTIME]
     T50: 12.0559999346733 +/- 3.39483840244188
        Measured from: 2.89200001955032
                   to: 14.9479999542236     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 5.80000001192093     
                   to: 6.80000001192093     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.86000001430511     
                   to: 30.1119999885559     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.346979   0.367536   0.216563   0.028297
           0.036807   0.036850   0.032306   0.028451 [error]
 Peak      0.026546   0.020110   0.017603   0.005316
           0.006663   0.006524   0.005813   0.004784 [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 1.06e-07 1.58e-07 1.75e-07 3.69e-07 5.51e-07 8.08e-07   erg/cm2
              Error 1.33e-08 1.73e-08 3.18e-08 1.37e-07 7.28e-08 1.68e-07   erg/cm2
Peak flux Power-law 2.43e-01 1.88e-01 9.73e-02 7.28e-02 5.61e-01 6.00e-01   ph/cm2/s
              Error 1.06e-01 5.36e-02 4.98e-02 7.58e-02 1.60e-01 1.74e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.05e-07 1.59e-07 1.76e-07 3.39e-07 5.48e-07 7.77e-07   erg/cm2
              Error 1.86e-08 2.04e-08 3.19e-08 2.18e-07 7.83e-08 2.33e-07   erg/cm2
Peak flux Cutoff-PL 2.44e-01 1.88e-01 9.65e-02 7.10e-02 5.61e-01 5.99e-01   ph/cm2/s
              Error 1.06e-01 5.45e-02 4.82e-02 9.01e-02 1.60e-01 1.72e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   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    1.845    0.210    -      -           1.82e-03 2.37e-04   47.650 57
CPL   1.809    0.875     239.2    0.0      1.90e-03 0.00e+00   47.650 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared 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    1.948    0.644    -      -           3.83e-03 1.47e-03   63.790 57
CPL   3.849    0.000     452.9 -189.6      5.03e-04 3.75e-03   61.970 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   32.972   -2.860   30.112
T90    27.552   -2.012   25.540
T50    12.056    2.892   14.948
Peak    1.000    5.800    6.800

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  107.5535   -22.4660   0.0148    28.1318  -176.2472         0.9311126     13.017 TRIG_00643833                 
 
Foreground time interval of the image:
 -2.860  30.112 (delta_t =  32.972 [sec])
Background time interval of the image:
-525.667 -509.378 (delta_t =  16.289 [sec])
-239.768  -2.860 (delta_t = 236.908 [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

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   -2.860 sec. to   30.112 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.84461     ( -0.205117   0.215022 )
Norm@50keV  : 1.81602E-03    ( -0.000240594   0.000234319 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.65 using 59 PHA bins.
# Reduced chi-squared =         0.8360 for     57 degrees of freedom 
# Null hypothesis probability =   8.064489e-01
 
Photon flux (15-150 keV)    in 32.97 sec: 0.254704 ( -0.0281654  0.028185 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.50576e-07 ( -7.21684e-08  7.34934e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.860 sec. to   30.112 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.80918     ( -0.84385   0.905273 )
Epeak [keV] : 239.161      (   )
Norm@50keV  : 1.89959E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.65 using 59 PHA bins.
# Reduced chi-squared =         0.8509 for     56 degrees of freedom 
# Null hypothesis probability =   7.788557e-01
 
Photon flux (15-150 keV)    in 32.97 sec: 0.254468 ( -0.028978  0.028386 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.48446e-07 ( -8.15711e-08  7.50793e-08 ) ergs/cm2
 
Band function
Time interval is from   -2.860 sec. to   30.112 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.71038   ( 1.711   6.25661 )
beta        : -1.90658    ( 1.90209   0.26261 )
Epeak [keV] : 87.8961      ( -92.9706 -92.9706 )
Norm@50keV   : 2.17300E-03    ( -0.000542147   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.65 using 59 PHA bins.
# Reduced chi-squared =         0.8664 for     55 degrees of freedom 
# Null hypothesis probability =   7.485313e-01
 
Photon flux (15-150 keV)    in 32.97 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]    : 11.2266  (-1.53169  1.79092)
R^2/D10^2   : 7.60516E-02  (-0.0321034   0.0552822)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.64 using 59 PHA bins.
# Reduced chi-squared =          1.239 for     57 degrees of freedom 
# Null hypothesis probability =   1.058566e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.628e-08   1.337e-08
25- 50  1.924e-07   3.193e-08
50-150  1.391e-07   4.314e-08
15-150  3.977e-07   5.890e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 94.7659       (-31.8426      65.9909)
Norm        : 1.13256       (-0.170301     0.215832)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.76 using 59 PHA bins.
# Reduced chi-squared =         0.8554 for     57 degrees of freedom 
# Null hypothesis probability =   7.731868e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.755e-08   1.619e-08
25- 50  1.668e-07   2.253e-08
50-150  2.621e-07   1.129e-07
15-150  5.264e-07   1.441e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.18197        (-2.27776      3.14558)
R1^2/D10^2  : 0.942162        (-0.725959      11.4693)
kT2 [keV]   : 19.7582        (-6.26265      23.4562)
R2^2/D10^2  : 7.33855E-03    (-0.00645449   0.0247423)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.43 using 59 PHA bins.
# Reduced chi-squared =         0.9169 for     55 degrees of freedom 
# Null hypothesis probability =   6.496456e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.053e-07   5.188e-08
25- 50  1.524e-07   7.324e-08
50-150  2.641e-07   1.498e-07
15-150  5.218e-07   2.156e-07

Peak spectrum fit

Power-law model
Time interval is from    5.800 sec. to    6.800 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.94790     ( -0.574418   0.713621 )
Norm@50keV  : 3.82876E-03    ( -0.00157224   0.00137764 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.79 using 59 PHA bins.
# Reduced chi-squared =          1.119 for     57 degrees of freedom 
# Null hypothesis probability =   2.499957e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.560984 ( -0.160053  0.160075 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.52312e-08 ( -1.25806e-08  1.31232e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    5.800 sec. to    6.800 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.84854     (     )
Epeak [keV] : 452.868      ( -73.1815 -452.444 )
Norm@50keV  : 5.02552E-04    ( -0.000505489   0.00699224 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.97 using 59 PHA bins.
# Reduced chi-squared =          1.107 for     56 degrees of freedom 
# Null hypothesis probability =   2.715611e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.560893 ( -0.159804  0.159849 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.51238e-08 ( -1.24761e-08  1.28975e-08 ) ergs/cm2
 
Band function
Time interval is from    5.800 sec. to    6.800 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.49903   ( 1.50243   1.50243 )
beta        : -1.93233    ( 1.93915   0.565872 )
Epeak [keV] : 17.2846      ( -13.3719 -13.3719 )
Norm@50keV   : 1.00176E-02    ( -0.0106377   103.539 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.80 using 59 PHA bins.
# Reduced chi-squared =          1.160 for     55 degrees of freedom 
# Null hypothesis probability =   1.947018e-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]    : 9.88187  (-3.3558  6.33811)
R^2/D10^2   : 0.257571  (-0.256108   0.99989)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.88 using 59 PHA bins.
# Reduced chi-squared =          1.226 for     57 degrees of freedom 
# Null hypothesis probability =   1.176365e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.101e-09   3.218e-09
25- 50  1.247e-08   7.545e-09
50-150  6.288e-09   4.493e-09
15-150  2.386e-08   1.452e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 90.5072       (-90.5703      -90.5703)
Norm        : 2.49265       (-0.880062     1.85781)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.84 using 59 PHA bins.
# Reduced chi-squared =          1.138 for     57 degrees of freedom 
# Null hypothesis probability =   2.221016e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.505e-09   4.008e-09
25- 50  1.102e-08   6.690e-09
50-150  1.683e-08   1.419e-08
15-150  3.435e-08   2.451e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.11704        (-2.11683      6.2133)
R1^2/D10^2  : 344.089        (-342.297      -342.819)
kT2 [keV]   : 15.9091        (-7.07323      66.648)
R2^2/D10^2  : 3.93267E-02    (-0.0363121   0.0744173)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.00 using 59 PHA bins.
# Reduced chi-squared =          1.146 for     55 degrees of freedom 
# Null hypothesis probability =   2.142343e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.213e-09   3.563e-09
25- 50  8.812e-09   5.310e-09
50-150  1.523e-08   9.665e-09
15-150  3.126e-08   1.737e-08
Plot creation:
Mon Jun 15 10:33:52 EDT 2015