batgrbproduct Analysis for Trigger=571830

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Sep 26 01:21:30 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger571830/GCN5_download_cron
======================================================================

  Trigger: 00571830      Segment: 000

  BAT Trigger Time: 401775096   [s; MET]
      Trigger Stop: 401775160   [s; MET]
               UTC: 2013-09-25T04:11:24.926960    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 41.1834870565618   Dec: -26.1344446281341  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    23.15
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    23.15

  Flight Position:   [ source = BAT ]
    RA: 41.1834870565618   Dec: -26.1344446281341  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 41.1855796814181   Dec: -26.1464872283531  [deg; J2000]  
        { 02h 44m 44.5s , -26d 08' 47.4" }
         +/- 0.986567481680092 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.290976729920843 [arcmin] (formal 1-sigma fit error)
    SNR: 31.0104929992447
 
  Angular difference between Flight and Ground position is 0.731295 arcmin
 
  Partial Coding Fraction: 0.09960938    [ including projection effects ]

  Duration
     T90: 161.115999937057 +/- 3.54089256630188
        Measured from: -49.2439998984337
                   to: 111.872000038624     [s; relative to TRIGTIME]
     T50: 83.8439999818802 +/- 2.22861748592165
        Measured from: -28.6319999098778
                   to: 55.2120000720024     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -35.6359999775887     
                   to: -34.6359999775887     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -59.5159999728203     
                   to: 903.952000021935     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    25.659865  27.488084  15.089610   2.912397
           0.281942   0.293363   0.246648   0.193896 [error]
 Peak      0.260181   0.275018   0.212447   0.055434
           0.021562   0.022617   0.019617   0.013804 [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 9.98e-06 1.28e-05 1.20e-05 1.99e-05 4.15e-05 5.47e-05   erg/cm2
              Error 3.81e-07 2.74e-07 2.92e-07 1.10e-06 7.73e-07 1.27e-06   erg/cm2
Peak flux Power-law 3.07e+00 2.45e+00 1.31e+00 1.03e+00 7.29e+00 7.86e+00   ph/cm2/s
              Error 4.15e-01 2.09e-01 1.62e-01 2.51e-01 6.32e-01 6.58e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.39e-06 1.29e-05 1.22e-05 1.48e-05 4.07e-05 4.94e-05   erg/cm2
              Error 5.18e-07 2.89e-07 3.19e-07 2.69e-06 9.20e-07 2.95e-06   erg/cm2
Peak flux Cutoff-PL 3.00e+00 2.48e+00 1.33e+00 8.71e-01 7.25e+00 7.68e+00   ph/cm2/s
              Error 4.83e-01 2.42e-01 1.75e-01 4.00e-01 6.54e-01 8.10e-01   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 7.73e+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    2.092    0.038    -      -           4.64e-03 8.72e-05   45.620 57
CPL   1.848    0.138      33.4   20.0      6.02e-03 9.78e-04   38.180 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.897    0.155    -      -           5.09e-02 4.80e-03   49.950 57
CPL   1.752    0.577      84.3    0.0      6.05e-02 0.00e+00   49.750 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: 134.016000 sec.
T50 in the 50-300 keV band: 63.936000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  963.468  -59.516  903.952
T90   161.116  -49.244  111.872
T50    83.844  -28.632   55.212
Peak    1.000  -35.636  -34.636

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   41.1856 -26.1465 0.0062   40.8  123.2      24.8306    31.0  TRIG_00571830       
------------------------------------------
 
Foreground time interval of the image:
-13.599  72.601 (delta_t =  86.200 [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
Multiple GTIs in the spectrum
tstart tstop
-59.516000 128.100000
129.000000 903.952000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.09218     ( -0.0377832   0.0379194 )
Norm@50keV  : 4.64412E-03    ( -8.72643e-05   8.72304e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.62 using 59 PHA bins.
# Reduced chi-squared =         0.8004 for     57 degrees of freedom 
# Null hypothesis probability =   8.605431e-01
 
Photon flux (15-150 keV)    in 962.6 sec: 0.727830 ( -0.0177437  0.0178794 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.15041e-05 ( -7.72598e-07  7.72615e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-59.516000 128.100000
129.000000 903.952000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.84795     ( -0.159091   0.117429 )
Epeak [keV] : 33.3830      ( -29.5002 10.5804 )
Norm@50keV  : 6.01638E-03    ( -0.000878529   0.00107758 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.18 using 59 PHA bins.
# Reduced chi-squared =         0.6818 for     56 degrees of freedom 
# Null hypothesis probability =   9.671405e-01
 
Photon flux (15-150 keV)    in 962.6 sec: 0.707192 ( -0.021334  0.021579 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.06982e-05 ( -9.20149e-07  9.19572e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-59.516000 128.100000
129.000000 903.952000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.84797   ( -0.140582   0.137522 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 33.3768      ( -20.5305 6.28447 )
Norm@50keV   : 6.01459E-03    ( -0.000866423   0.00107985 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.18 using 59 PHA bins.
# Reduced chi-squared =         0.6942 for     55 degrees of freedom 
# Null hypothesis probability =   9.589833e-01
 
Photon flux (15-150 keV)    in 962.6 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]    : 13.1682  (  )
R^2/D10^2   : 0.102537  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         692.46 using 59 PHA bins.
# Reduced chi-squared =         12.148 for     57 degrees of freedom 
# Null hypothesis probability =  5.539595e-110
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.629e-06   1.391e-07
25- 50  1.267e-05   3.128e-07
50-150  1.400e-05   4.957e-07
15-150  3.030e-05   6.353e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 76.4319       (-4.31458      4.73032)
Norm        : 3.21621       (-0.1184     0.123335)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.95 using 59 PHA bins.
# Reduced chi-squared =          1.157 for     57 degrees of freedom 
# Null hypothesis probability =   1.948598e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.007e-06   2.618e-07
25- 50  1.303e-05   2.984e-07
50-150  1.783e-05   5.679e-07
15-150  3.888e-05   7.364e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.67768        (-0.43231      0.445832)
R1^2/D10^2  : 1.06252        (-0.235765      0.326676)
kT2 [keV]   : 22.4628        (-1.40501      1.64693)
R2^2/D10^2  : 9.44182E-03    (-0.00240681   0.00296843)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.29 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     55 degrees of freedom 
# Null hypothesis probability =   2.905610e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.799e-06   4.837e-07
25- 50  1.318e-05   4.380e-07
50-150  1.817e-05   7.845e-07
15-150  3.915e-05   1.271e-06

Peak spectrum fit

Power-law model
Time interval is from  -35.636 sec. to  -34.636 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.89696     ( -0.151624   0.157679 )
Norm@50keV  : 5.08979E-02    ( -0.00483682   0.00475687 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.95 using 59 PHA bins.
# Reduced chi-squared =         0.8764 for     57 degrees of freedom 
# Null hypothesis probability =   7.344019e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.29496 ( -0.631026  0.632635 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.67927e-07 ( -4.36703e-08  4.39503e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -35.636 sec. to  -34.636 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75198     ( -0.594337   0.558905 )
Epeak [keV] : 84.3092      (   )
Norm@50keV  : 6.04708E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.75 using 59 PHA bins.
# Reduced chi-squared =         0.8883 for     56 degrees of freedom 
# Null hypothesis probability =   7.091162e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.24594 ( -0.65558  0.65313 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.64399e-07 ( -4.612e-08  4.5896e-08 ) ergs/cm2
 
Band function
Time interval is from  -35.636 sec. to  -34.636 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.75206   ( 1.65271   0.36966 )
beta        : -10.0000    ( 10   1.59872e-14 )
Epeak [keV] : 84.2943      ( -45.0913 -84.2945 )
Norm@50keV   : 6.04527E-02    ( -0.0142041   0.0599169 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.75 using 59 PHA bins.
# Reduced chi-squared =         0.9045 for     55 degrees of freedom 
# Null hypothesis probability =   6.749693e-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]    : 12.6984  (-1.3733  1.50803)
R^2/D10^2   : 1.36431  (-0.465642   0.722611)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          94.73 using 59 PHA bins.
# Reduced chi-squared =          1.662 for     57 degrees of freedom 
# Null hypothesis probability =   1.256762e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.666e-08   8.020e-09
25- 50  1.566e-07   1.710e-08
50-150  1.574e-07   3.045e-08
15-150  3.607e-07   3.815e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 94.3506       (-23.7446      38.2005)
Norm        : 32.2612       (-3.86803     4.55079)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.47 using 59 PHA bins.
# Reduced chi-squared =         0.9030 for     57 degrees of freedom 
# Null hypothesis probability =   6.817221e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.427e-08   1.105e-08
25- 50  1.440e-07   1.345e-08
50-150  2.256e-07   8.305e-08
15-150  4.539e-07   8.985e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.53121        (-1.01771      1.22933)
R1^2/D10^2  : 49.4446        (-31.6686      117.087)
kT2 [keV]   : 19.0736        (-2.89807      4.01024)
R2^2/D10^2  : 0.249332    (-0.131491   0.228115)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.77 using 59 PHA bins.
# Reduced chi-squared =         0.8686 for     55 degrees of freedom 
# Null hypothesis probability =   7.445062e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.754e-08   4.634e-08
25- 50  1.264e-07   3.316e-08
50-150  2.308e-07   6.395e-08
15-150  4.547e-07   1.218e-07
Plot creation:
Thu Sep 26 02:00:50 EDT 2013