batgrbproduct Analysis for Trigger=571271

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Sep 23 23:02:46 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger571271/batgroup_hand_proc
======================================================================

  Trigger: 00571271      Segment: 000

  BAT Trigger Time: 401281656   [s; MET]
      Trigger Stop: 401281720   [s; MET]
               UTC: 2013-09-19T11:07:24.949420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 207.28832904434   Dec: -10.3555440490979  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    14.9
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    14.9

  Flight Position:   [ source = BAT ]
    RA: 207.28832904434   Dec: -10.3555440490979  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 207.278358884458   Dec: -10.3555761918324  [deg; J2000]  
        { 13h 49m 06.8s , -10d 21' 20.1" }
         +/- 1.56568429089189 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.600552698430167 [arcmin] (formal 1-sigma fit error)
    SNR: 16.0313291571999
 
  Angular difference between Flight and Ground position is 0.588469 arcmin
 
  Partial Coding Fraction: 0.7734375    [ including projection effects ]

  Duration
     T90: 98.095999956131 +/- 25.624366550303
        Measured from: -14.6520000100136
                   to: 83.4439999461174     [s; relative to TRIGTIME]
     T50: 45.4799999594688 +/- 6.5871672423087
        Measured from: 0.736000001430511
                   to: 46.2159999608994     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -6.34399998188019     
                   to: -5.34399998188019     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -21.7239999771118     
                   to: 108.068000018597     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.616977   0.982216   0.578116   0.108227
           0.068241   0.065229   0.058029   0.052288 [error]
 Peak      0.014819   0.032702   0.016766   0.004591
           0.006278   0.005945   0.005311   0.004760 [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 2.12e-07 3.69e-07 4.93e-07 1.34e-06 1.44e-06 2.42e-06   erg/cm2
              Error 2.78e-08 3.07e-08 5.59e-08 3.18e-07 1.34e-07 3.66e-07   erg/cm2
Peak flux Power-law 1.78e-01 1.84e-01 1.34e-01 1.57e-01 5.58e-01 6.54e-01   ph/cm2/s
              Error 7.43e-02 4.89e-02 4.25e-02 1.02e-01 1.41e-01 1.68e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.74e-07 4.20e-07 5.01e-07 2.63e-07 1.28e-06 1.36e-06   erg/cm2
              Error 3.41e-08 4.20e-08 6.65e-08 2.29e-07 1.51e-07 2.69e-07   erg/cm2
Peak flux Cutoff-PL 1.55e-01 2.10e-01 1.36e-01 5.31e-01 5.40e-01 0.00e+00   ph/cm2/s
              Error 8.96e-02 7.76e-02 1.56e-01 2.11e-01 0.00e+00 0.00e+00   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.584    0.141    -      -           1.18e-03 1.01e-04   64.760 57
CPL   0.260    0.807      61.5   15.2      5.85e-03 7.17e-03   53.880 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    1.456    0.429    -      -           4.52e-03 1.16e-03   53.700 57
CPL   0.306    3.524      65.3  -12.9      1.95e-02 1.60e+01   53.020 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: 65.728000 sec.
T50 in the 50-300 keV band: 40.576000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  129.792  -21.724  108.068
T90    98.096  -14.652   83.444
T50    45.480    0.736   46.216
Peak    1.000   -6.344   -5.344

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  207.2784   -10.3556   0.0120    18.8794   -97.5960         2.1664535     16.031 TRIG_00571271                 
 
Foreground time interval of the image:
-11.699 108.068 (delta_t = 119.767 [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  -21.724 sec. to  108.068 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58445     ( -0.139945   0.142136 )
Norm@50keV  : 1.17995E-03    ( -0.000101785   0.000101123 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.76 using 59 PHA bins.
# Reduced chi-squared =          1.136 for     57 degrees of freedom 
# Null hypothesis probability =   2.241193e-01
 
Photon flux (15-150 keV)    in 129.8 sec: 0.150908 ( -0.0124271  0.0124406 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.43515e-06 ( -1.33283e-07  1.34865e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -21.724 sec. to  108.068 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.260286     ( -0.883022   0.730662 )
Epeak [keV] : 61.4773      ( -9.19624 21.2621 )
Norm@50keV  : 5.84604E-03    ( -0.00339073   0.0109578 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.88 using 59 PHA bins.
# Reduced chi-squared =         0.9622 for     56 degrees of freedom 
# Null hypothesis probability =   5.555097e-01
 
Photon flux (15-150 keV)    in 129.8 sec: 0.141626 ( -0.013325  0.013347 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.27763e-06 ( -1.47866e-07  1.54897e-07 ) ergs/cm2
 
Band function
Time interval is from  -21.724 sec. to  108.068 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.260666   ( -0.451283   0.660874 )
beta        : -10.00000    ( 10   1.10974e-06 )
Epeak [keV] : 61.4721      ( -8.04855 21.2479 )
Norm@50keV   : 5.84374E-03    ( -0.00046803   0.0109723 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.88 using 59 PHA bins.
# Reduced chi-squared =         0.9796 for     55 degrees of freedom 
# Null hypothesis probability =   5.174429e-01
 
Photon flux (15-150 keV)    in 129.8 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]    : 13.4767  (-1.13642  1.26544)
R^2/D10^2   : 2.52248E-02  (-0.00699289   0.00945819)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.92 using 59 PHA bins.
# Reduced chi-squared =          1.104 for     57 degrees of freedom 
# Null hypothesis probability =   2.748998e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.260e-07   1.907e-08
25- 50  4.507e-07   4.660e-08
50-150  5.282e-07   9.144e-08
15-150  1.105e-06   1.171e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 166.017       (-56.1501      -164.999)
Norm        : 0.622438       (-0.0533142     0.0653434)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.41 using 59 PHA bins.
# Reduced chi-squared =          1.042 for     57 degrees of freedom 
# Null hypothesis probability =   3.878533e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.056e-07   3.180e-08
25- 50  3.864e-07   9.969e-08
50-150  7.941e-07   4.016e-07
15-150  1.386e-06   6.816e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.87528        (      )
R1^2/D10^2  : 5.27755E-02        (-0.0253857      55.3708)
kT2 [keV]   : 25.8582        (-24.7139      -26.198)
R2^2/D10^2  : 1.26534E-03    (-0.00114079   0.0242027)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.29 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.02 using 59 PHA bins.
# Reduced chi-squared =          1.005 for     55 degrees of freedom 
# Reduced chi-squared =          1.000 for     55 degrees of freedom 
# Null hypothesis probability =   4.637910e-01
# Null hypothesis probability =   4.737606e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.772e-07   7.008e-08
25- 50  4.127e-07   1.116e-07
50-150  6.119e-07   1.568e-07
15-150  1.202e-06   2.877e-07

Peak spectrum fit

Power-law model
Time interval is from   -6.344 sec. to   -5.344 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45590     ( -0.428098   0.429341 )
Norm@50keV  : 4.51983E-03    ( -0.00116455   0.00115085 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.70 using 59 PHA bins.
# Reduced chi-squared =         0.9422 for     57 degrees of freedom 
# Null hypothesis probability =   5.995347e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.557824 ( -0.140478  0.140869 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.32055e-08 ( -1.20146e-08  1.23887e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -6.344 sec. to   -5.344 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.305686     ( -5.5193   1.52879 )
Epeak [keV] : 65.2528      ( -38.9174 -64.7235 )
Norm@50keV  : 1.95439E-02    ( -0.0203163   32.0593 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.02 using 59 PHA bins.
# Reduced chi-squared =         0.9468 for     56 degrees of freedom 
# Null hypothesis probability =   5.884250e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.530914 ( -0.159232  0.152026 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   -6.344 sec. to   -5.344 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.66382   ( -4.66382   -4.66382 )
beta        : -2.06397    ( -1.31864   0.710199 )
Epeak [keV] : 36.3672      ( -25.84 10.6154 )
Norm@50keV   : 34.2379    ( -8.26061   1.81343e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.07 using 59 PHA bins.
# Reduced chi-squared =         0.9286 for     55 degrees of freedom 
# Null hypothesis probability =   6.254226e-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]    : 12.6831  (-2.96728  4.45522)
R^2/D10^2   : 0.118104  (-0.0783346   0.190414)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.71 using 59 PHA bins.
# Reduced chi-squared =         0.9422 for     57 degrees of freedom 
# Null hypothesis probability =   5.994414e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.029e-09   1.835e-09
25- 50  1.351e-08   5.097e-09
50-150  1.354e-08   7.642e-09
15-150  3.107e-08   1.330e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (-126.403      -199.363)
Norm        : 2.29793       (-0.569016     0.569751)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.44 using 59 PHA bins.
# Reduced chi-squared =         0.9376 for     57 degrees of freedom 
# Null hypothesis probability =   6.092465e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.722e-09   3.552e-09
25- 50  1.101e-08   6.480e-09
50-150  2.414e-08   1.442e-08
15-150  4.087e-08   2.447e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.6872        (-3.58221      2.99997)
R1^2/D10^2  : 0.192543        (      )
kT2 [keV]   : 199.295        (-199.318      -199.318)
R2^2/D10^2  : 6.28052E-05    (-3.18358e-05   0.0261694)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.34 using 59 PHA bins.
#Fit statistic : Chi-Squared =          50.18 using 59 PHA bins.
# Reduced chi-squared =         0.9152 for     55 degrees of freedom 
# Reduced chi-squared =         0.9123 for     55 degrees of freedom 
# Null hypothesis probability =   6.531516e-01
# Null hypothesis probability =   6.590003e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.741e-09   2.922e-09
25- 50  1.304e-08   8.415e-09
50-150  2.501e-08   1.252e-08
15-150  4.278e-08   2.230e-08
Plot creation:
Mon Sep 23 23:34:50 EDT 2013