batgrbproduct Analysis for Trigger=583105

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Jan  7 17:01:52 EST 2014
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger583105/GCN5_download_cron
======================================================================

  Trigger: 00583105      Segment: 000

  BAT Trigger Time: 410743280   [s; MET]
      Trigger Stop: 410743984   [s; MET]
               UTC: 2014-01-06T23:21:08.512700    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 297.350213168348   Dec: 30.2310817107992  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.02
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    6.02

  Flight Position:   [ source = BAT ]
    RA: 297.350213168348   Dec: 30.2310817107992  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 297.314076250516   Dec: 30.2289543951339  [deg; J2000]  
        { 19h 49m 15.4s , +30d 13' 44.2" }
         +/- 3.33979320705116 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.00760112067598 [arcmin] (formal 1-sigma fit error)
    SNR: 5.43184733840144
 
  Angular difference between Flight and Ground position is 1.877705 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 679.143999993801 +/- 259.847023015542
        Measured from: 55.4560000896454
                   to: 734.600000083447     [s; relative to TRIGTIME]
     T50: 182.723999977112 +/- 303.451010913281
        Measured from: 139.904000103474
                   to: 322.628000080585     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -80.4279999732971     
                   to: -79.4279999732971     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -81.216000020504     
                   to: 825.888000011444     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.232801   1.083810   0.121237   0.193586
           0.176145   0.175460   0.147849   0.125304 [error]
 Peak      0.017764   0.006581   0.028392  -0.011342
           0.013669   0.012615   0.011098   0.009750 [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 3.40e-07 3.44e-07 2.44e-07 2.77e-07 1.04e-06 1.21e-06   erg/cm2
              Error 7.21e-08 7.84e-08 1.04e-07 2.16e-07 2.60e-07 3.88e-07   erg/cm2
Peak flux Power-law 7.39e-02 1.09e-01 1.20e-01 2.46e-01 3.78e-01 5.48e-01   ph/cm2/s
              Error 1.05e-01 1.04e-01 9.86e-02 4.03e-01 2.63e-01 4.03e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.47e-07 4.29e-07 7.00e-08 4.71e-10 8.46e-07 8.46e-07   erg/cm2
              Error 8.26e-08 1.15e-07 1.13e-07 2.01e-08 2.05e-07 1.60e-07   erg/cm2
Peak flux Cutoff-PL 1.21e-03 6.16e-02 2.16e-01 2.09e-02 2.99e-01 3.00e-01   ph/cm2/s
              Error 2.14e-02 8.96e-02 1.15e-01 9.29e-02 1.75e-01 1.81e-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 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    2.490    0.381    -      -           1.16e-04 3.72e-05   50.050 57
CPL  -1.779    3.772      26.0    5.9      1.16e-01 0.00e+00   42.990 56
 
The chi2 of BB fit is 43.06 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    0.867    1.314    -      -           3.29e-03 2.35e-03   44.690 57
CPL  -9.953    0.000      74.0   60.5      1.58e+01 1.23e+02   41.500 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  907.104  -81.216  825.888
T90   679.144   55.456  734.600
T50   182.724  139.904  322.628
Peak    1.000  -80.428  -79.428

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  297.3141 +30.2290 0.0353    5.5  175.2       2.3533     5.4  TRIG_00583105       
------------------------------------------
 
Foreground time interval of the image:
-17.599 179.500 (delta_t = 197.099 [sec])
181.000 271.880 (delta_t =  90.880 [sec])
273.000 320.840 (delta_t =  47.840 [sec])
322.000 495.880 (delta_t = 173.880 [sec])
497.000 735.940 (delta_t = 238.940 [sec])
737.000 760.101 (delta_t =  23.101 [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
-81.216000 -55.270000
-54.000000 179.500000
181.000000 271.880000
273.000000 320.840000
322.000000 495.880000
497.000000 735.940000
737.000000 825.888000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.49007     ( -0.353939   0.407826 )
Norm@50keV  : 1.15610E-04    ( -3.66876e-05   3.7736e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.05 using 59 PHA bins.
# Reduced chi-squared =         0.8781 for     57 degrees of freedom 
# Null hypothesis probability =   7.310553e-01
 
Photon flux (15-150 keV)    in 899.9 sec: 2.25706E-02 ( -0.0043457  0.00435812 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03688e-06 ( -2.49884e-07  2.69245e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-81.216000 -55.270000
-54.000000 179.500000
181.000000 271.880000
273.000000 320.840000
322.000000 495.880000
497.000000 735.940000
737.000000 825.888000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.77904     ( -5.31992   2.22485 )
Epeak [keV] : 25.9520      ( -6.06702 5.73177 )
Norm@50keV  : 0.116209    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.99 using 59 PHA bins.
# Reduced chi-squared =         0.7677 for     56 degrees of freedom 
# Null hypothesis probability =   8.989431e-01
 
Photon flux (15-150 keV)    in 899.9 sec: 2.21239E-02 ( -0.0041244  0.0041566 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.45976e-07 ( -1.86646e-07  2.23906e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-81.216000 -55.270000
-54.000000 179.500000
181.000000 271.880000
273.000000 320.840000
322.000000 495.880000
497.000000 735.940000
737.000000 825.888000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.61257   ( -5.81025   -4.61257 )
beta        : -3.63391    ( -6.10711   0.911637 )
Epeak [keV] : 24.1657      ( -3.65716 3.80586 )
Norm@50keV   : 21.6077    ( -3.90594   190.23 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.41 using 59 PHA bins.
# Reduced chi-squared =         0.7712 for     55 degrees of freedom 
# Null hypothesis probability =   8.927188e-01
 
Photon flux (15-150 keV)    in 899.9 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]    : 6.66504  (-1.09753  1.30703)
R^2/D10^2   : 5.67639E-02  (-0.0299238   0.0636884)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.06 using 59 PHA bins.
# Reduced chi-squared =         0.7554 for     57 degrees of freedom 
# Null hypothesis probability =   9.141539e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.455e-07   1.169e-07
25- 50  4.294e-07   1.502e-07
50-150  5.939e-08   3.948e-08
15-150  8.343e-07   2.887e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 28.2894       (-9.23585      15.5986)
Norm        : 0.197337       (-0.0619951     0.0968044)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.42 using 59 PHA bins.
# Reduced chi-squared =         0.7968 for     57 degrees of freedom 
# Null hypothesis probability =   8.653731e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.503e-07   9.516e-08
25- 50  3.872e-07   1.441e-07
50-150  1.960e-07   1.367e-07
15-150  9.336e-07   2.726e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.91870        (-5.94703      -5.94703)
R1^2/D10^2  : 7.64043E-02        (-0.0754121      -0.0754121)
kT2 [keV]   : 11.5755        (-12.1678      -12.1678)
R2^2/D10^2  : 1.47255E-03    (-0.00106897   0.113743)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.74 using 59 PHA bins.
# Reduced chi-squared =         0.7770 for     55 degrees of freedom 
# Null hypothesis probability =   8.858535e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.511e-07   3.065e-07
25- 50  4.164e-07   4.738e-07
50-150  1.149e-07   2.241e-07
15-150  8.825e-07   9.795e-07

Peak spectrum fit

Power-law model
Time interval is from  -80.428 sec. to  -79.428 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.867448     ( -1.47968   1.14825 )
Norm@50keV  : 3.29203E-03    ( -0.00240007   0.00229015 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.69 using 59 PHA bins.
# Reduced chi-squared =         0.7841 for     57 degrees of freedom 
# Null hypothesis probability =   8.818513e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.377653 ( -0.254024  0.271822 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.74304e-08 ( -2.44546e-08  2.48296e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -80.428 sec. to  -79.428 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -9.95315     (     )
Epeak [keV] : 73.9892      ( -16.4203 104.498 )
Norm@50keV  : 15.7703    ( -16.2798   229.232 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.50 using 59 PHA bins.
# Reduced chi-squared =         0.7411 for     56 degrees of freedom 
# Null hypothesis probability =   9.258644e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.299424 ( -0.158845  0.191579 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.23955e-08 ( -1.77199e-08  2.03036e-08 ) ergs/cm2
 
Band function
Time interval is from  -80.428 sec. to  -79.428 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -5.56886   -5 )
beta        : -9.37167    ( 9.37167   19.3706 )
Epeak [keV] : 79.7764      ( -28.7758 35.1262 )
Norm@50keV   : 0.390898    ( -0.21528   714218 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.26 using 59 PHA bins.
# Reduced chi-squared =         0.7683 for     55 degrees of freedom 
# Null hypothesis probability =   8.959813e-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]    : 23.6004  (-9.66231  37.6894)
R^2/D10^2   : 1.25557E-02  (-0.0126233   0.0548324)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.34 using 59 PHA bins.
# Reduced chi-squared =         0.7604 for     57 degrees of freedom 
# Null hypothesis probability =   9.090010e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.251e-09   8.810e-10
25- 50  6.887e-09   4.811e-09
50-150  2.862e-08   2.131e-08
15-150  3.676e-08   2.689e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-199.363      -199.363)
Norm        : 1.60599       (-1.13859     1.13864)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.79 using 59 PHA bins.
# Reduced chi-squared =         0.8033 for     57 degrees of freedom 
# Null hypothesis probability =   8.564276e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.999e-09   2.993e-09
25- 50  7.693e-09   5.660e-09
50-150  1.687e-08   1.265e-08
15-150  2.856e-08   2.107e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.28448        (-3.22136      60.0358)
R1^2/D10^2  : 1.61594        (-2.55963      -2.55963)
kT2 [keV]   : 23.6633        (-18.6361      46.3184)
R2^2/D10^2  : 1.23523E-02    (-0.011661   0.0539771)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.30 using 59 PHA bins.
# Reduced chi-squared =         0.7873 for     55 degrees of freedom 
# Null hypothesis probability =   8.731440e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.755e-09   1.019e-09
25- 50  6.915e-09   5.160e-09
50-150  2.845e-08   2.082e-08
15-150  3.712e-08   2.439e-08
Plot creation:
Tue Jan  7 17:32:30 EST 2014