batgrbproduct Analysis for Trigger=648601

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Jul 12 20:42:34 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger648601/GCN5_download_cron
======================================================================

  Trigger: 00648601      Segment: 000

  BAT Trigger Time: 458331798.528   [s; MET]
      Trigger Stop: 458331799.552   [s; MET]
               UTC: 2015-07-11T18:23:03.688560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 221.630798971157   Dec: -35.4711122907382  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.97
     Image Trigger?:     NO
     Rate S/N Ratio:     11.5758369027902  [ if not an image trigger ]
     Image S/N Ratio:    7.97

  Flight Position:   [ source = BAT ]
    RA: 221.630798971157   Dec: -35.4711122907382  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 221.623657006846   Dec: -35.4639838466694  [deg; J2000]  
        { 14h 46m 29.7s , -35d 27' 50.3" }
         +/- 0.992156531838041 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.434863780609483 [arcmin] (formal 1-sigma fit error)
    SNR: 30.761238323197
 
  Angular difference between Flight and Ground position is 0.552030 arcmin
 
  Partial Coding Fraction: 0.328125    [ including projection effects ]

  Duration
     T90: 71.0039999485016 +/- 14.1552811438769
        Measured from: -27.959999859333
                   to: 43.0440000891685     [s; relative to TRIGTIME]
     T50: 14.5759999752045 +/- 3.47929933311532
        Measured from: -4.12399989366531
                   to: 10.4520000815392     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.98000001907349     
                   to: 2.98000001907349     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -34.0600000023842     
                   to: 70.2360000014305     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.864944   2.639546   1.743092   0.422608
           0.109267   0.101345   0.085064   0.070767 [error]
 Peak      0.100896   0.145789   0.118821   0.046826
           0.013451   0.013308   0.012265   0.008961 [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 7.84e-07 1.21e-06 1.40e-06 3.11e-06 4.31e-06 6.50e-06   erg/cm2
              Error 6.48e-08 5.97e-08 8.68e-08 4.16e-07 2.09e-07 4.79e-07   erg/cm2
Peak flux Power-law 1.27e+00 1.25e+00 8.63e-01 9.37e-01 3.76e+00 4.33e+00   ph/cm2/s
              Error 2.26e-01 1.34e-01 1.01e-01 2.30e-01 3.81e-01 4.11e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.41e-07 1.24e-06 1.43e-06 2.05e-06 4.23e-06 5.46e-06   erg/cm2
              Error 7.92e-08 6.98e-08 9.42e-08 9.44e-07 2.31e-07 8.78e-07   erg/cm2
Peak flux Cutoff-PL 1.29e+00 1.26e+00 8.57e-01 9.12e-01 3.77e+00 4.33e+00   ph/cm2/s
              Error 2.29e-01 1.33e-01 1.01e-01 2.25e-01 3.82e-01 4.10e-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    1.789    0.085    -      -           4.49e-03 2.14e-04   70.240 57
CPL   1.488    0.341      86.6  -31.7      6.32e-03 2.48e-03   67.840 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.538    0.171    -      -           2.98e-02 2.86e-03   45.640 57
CPL   1.541    0.172    9999.3    0.0      2.99e-02 2.27e-02   45.650 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: 55.360000 sec.
T50 in the 50-300 keV band: 9.792000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  104.296  -34.060   70.236
T90    71.004  -27.960   43.044
T50    14.576   -4.124   10.452
Peak    1.000    1.980    2.980

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  221.6237 -35.4640 0.0063   46.9 -161.3       5.2409    30.8  TRIG_00648601       
------------------------------------------
 
Foreground time interval of the image:
-34.060  11.273 (delta_t =  45.333 [sec])
Background time interval of the image:
-239.528 -34.060 (delta_t = 205.468 [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  -34.060 sec. to   70.236 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78869     ( -0.0843569   0.0850752 )
Norm@50keV  : 4.48636E-03    ( -0.000214139   0.000213594 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.24 using 59 PHA bins.
# Reduced chi-squared =          1.232 for     57 degrees of freedom 
# Null hypothesis probability =   1.118188e-01
 
Photon flux (15-150 keV)    in 104.3 sec: 0.615523 ( -0.0312643  0.0313882 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.3096e-06 ( -2.0918e-07  2.09596e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -34.060 sec. to   70.236 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48830     ( -0.355165   0.32683 )
Epeak [keV] : 86.5877      ( -23.1185 -86.588 )
Norm@50keV  : 6.31833E-03    ( -0.00189946   0.0030702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.84 using 59 PHA bins.
# Reduced chi-squared =          1.211 for     56 degrees of freedom 
# Null hypothesis probability =   1.334537e-01
 
Photon flux (15-150 keV)    in 104.3 sec: 0.603865 ( -0.033534  0.033676 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.22572e-06 ( -2.31317e-07  2.29742e-07 ) ergs/cm2
 
Band function
Time interval is from  -34.060 sec. to   70.236 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -5.38496E-02   ( -3.11567   -0.618425 )
beta        : -1.89614    ( -2.1887   0.123615 )
Epeak [keV] : 35.6630      ( -9.05497 117.901 )
Norm@50keV   : 5.99774E-02    ( -0.0602709   189.455 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.82 using 59 PHA bins.
# Reduced chi-squared =          1.197 for     55 degrees of freedom 
# Null hypothesis probability =   1.507223e-01
 
Photon flux (15-150 keV)    in 104.3 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]    : 13.5791  (  )
R^2/D10^2   : 9.06064E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         178.21 using 59 PHA bins.
# Reduced chi-squared =         3.1265 for     57 degrees of freedom 
# Null hypothesis probability =   2.106245e-14
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.690e-07   3.520e-08
25- 50  1.331e-06   7.927e-08
50-150  1.590e-06   1.533e-07
15-150  3.289e-06   1.752e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 121.687       (-23.3513      24.6274)
Norm        : 2.54528       (-0.156679     0.212527)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.82 using 59 PHA bins.
# Reduced chi-squared =          1.207 for     57 degrees of freedom 
# Null hypothesis probability =   1.356628e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.911e-07   5.846e-08
25- 50  1.239e-06   7.457e-08
50-150  2.227e-06   5.982e-07
15-150  4.157e-06   6.305e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.03690        (-0.933988      1.01884)
R1^2/D10^2  : 0.717865        (-0.267303      0.481867)
kT2 [keV]   : 25.0330        (-3.59698      5.4508)
R2^2/D10^2  : 6.99453E-03    (-0.00364006   0.00588053)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.92 using 59 PHA bins.
# Reduced chi-squared =          1.217 for     55 degrees of freedom 
# Null hypothesis probability =   1.300885e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.782e-07   1.097e-07
25- 50  1.279e-06   1.464e-07
50-150  2.233e-06   4.401e-07
15-150  4.190e-06   5.465e-07

Peak spectrum fit

Power-law model
Time interval is from    1.980 sec. to    2.980 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.53780     ( -0.170349   0.17196 )
Norm@50keV  : 2.98337E-02    ( -0.00285881   0.00285272 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.64 using 59 PHA bins.
# Reduced chi-squared =         0.8007 for     57 degrees of freedom 
# Null hypothesis probability =   8.601024e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.76357 ( -0.380311  0.381589 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.81355e-07 ( -2.87016e-08  2.88007e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.980 sec. to    2.980 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54112     ( -0.176534   0.167837 )
Epeak [keV] : 9999.32      ( -9999.36 -9999.36 )
Norm@50keV  : 2.99000E-02    ( -0.0299035   0.0154301 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.65 using 59 PHA bins.
# Reduced chi-squared =         0.8152 for     56 degrees of freedom 
# Null hypothesis probability =   8.367771e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.77482 ( -0.39368  0.37034 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.80137e-07 ( -2.7559e-08  2.9732e-08 ) ergs/cm2
 
Band function
Time interval is from    1.980 sec. to    2.980 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.74319   ( -4.74319   -4.74319 )
beta        : -1.56994    ( -0.189263   0.180517 )
Epeak [keV] : 21.9657      ( -21.9657 7.32645 )
Norm@50keV   : 4518.61    ( -428.23   1.68736e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.33 using 59 PHA bins.
# Reduced chi-squared =         0.8242 for     55 degrees of freedom 
# Null hypothesis probability =   8.205453e-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]    : 15.9783  (-2.25835  2.65061)
R^2/D10^2   : 0.328375  (-0.136097   0.23328)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          89.46 using 59 PHA bins.
# Reduced chi-squared =          1.570 for     57 degrees of freedom 
# Null hypothesis probability =   3.887292e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.734e-08   3.310e-09
25- 50  7.288e-08   1.038e-08
50-150  1.300e-07   2.422e-08
15-150  2.202e-07   2.785e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 15.3446       (-1.46067     1.46057)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.91 using 59 PHA bins.
# Reduced chi-squared =         0.8404 for     57 degrees of freedom 
# Null hypothesis probability =   7.991176e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.822e-08   5.215e-09
25- 50  7.351e-08   1.946e-08
50-150  1.612e-07   7.939e-08
15-150  2.730e-07   8.570e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.13456        (-1.54621      1.94277)
R1^2/D10^2  : 4.32416        (-2.47788      6.55592)
kT2 [keV]   : 35.0603        (-9.28152      24.1412)
R2^2/D10^2  : 1.83016E-02    (-0.0140927   0.0330057)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.12 using 59 PHA bins.
# Reduced chi-squared =         0.8023 for     55 degrees of freedom 
# Null hypothesis probability =   8.530783e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.923e-08   1.489e-08
25- 50  7.203e-08   2.264e-08
50-150  1.764e-07   8.752e-08
15-150  2.877e-07   1.032e-07
Plot creation:
Sun Jul 12 20:46:46 EDT 2015