batgrbproduct Analysis for Trigger=674734

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Feb 21 07:37:40 EST 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger674734/GCN5_download_cron
======================================================================

  Trigger: 00674734      Segment: 000

  BAT Trigger Time: 477659469.696   [s; MET]
      Trigger Stop: 477659470.72   [s; MET]
               UTC: 2016-02-20T11:10:53.826540    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 259.854260978407   Dec: -18.1230465541461  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.83
     Image Trigger?:     NO
     Rate S/N Ratio:     20.8086520466848  [ if not an image trigger ]
     Image S/N Ratio:    10.83

  Flight Position:   [ source = BAT ]
    RA: 259.854260978407   Dec: -18.1230465541461  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 259.850808642126   Dec: -18.1227364103901  [deg; J2000]  
        { 17h 19m 24.2s , -18d 07' 21.9" }
         +/- 0.693808511789594 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.220123678658102 [arcmin] (formal 1-sigma fit error)
    SNR: 51.2765642351761
 
  Angular difference between Flight and Ground position is 0.197742 arcmin
 
  Partial Coding Fraction: 0.3867188    [ including projection effects ]

  Duration
     T90: 31.3599999547005 +/- 2.55184091742984
        Measured from: -3.64399987459183
                   to: 27.7160000801086     [s; relative to TRIGTIME]
     T50: 8.28799992799759 +/- 0.548802335859839
        Measured from: 4.80400013923645
                   to: 13.092000067234     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 6.46000003814697     
                   to: 7.46000003814697     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -7.57599997520447     
                   to: 37.5400000214577     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.782560   3.410940   3.483641   1.120876
           0.078158   0.082986   0.074868   0.057078 [error]
 Peak      0.127431   0.279437   0.320213   0.112736
           0.013536   0.016540   0.016708   0.012705 [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 6.70e-07 1.48e-06 2.59e-06 1.06e-05 7.09e-06 1.53e-05   erg/cm2
              Error 3.79e-08 5.02e-08 7.32e-08 6.83e-07 1.90e-07 7.10e-07   erg/cm2
Peak flux Power-law 1.44e+00 1.98e+00 2.01e+00 3.70e+00 6.62e+00 9.14e+00   ph/cm2/s
              Error 1.74e-01 1.50e-01 1.26e-01 4.81e-01 4.09e-01 5.86e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.89e-07 1.51e-06 2.73e-06 6.45e-06 6.99e-06 1.13e-05   erg/cm2
              Error 4.89e-08 5.39e-08 9.35e-08 1.30e-06 1.98e-07 1.29e-06   erg/cm2
Peak flux Cutoff-PL 1.13e+00 2.07e+00 2.25e+00 1.85e+00 6.46e+00 7.29e+00   ph/cm2/s
              Error 2.18e-01 1.69e-01 1.73e-01 6.10e-01 4.17e-01 7.28e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.13e+00 2.07e+00 2.25e+00 2.21e+00 6.45e+00 7.67e+00   ph/cm2/s
              Error -------- 1.94e-01 -------- -------- 4.23e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.195    0.046    -      -           1.55e-02 4.18e-04   56.260 57
CPL   0.748    0.197     168.7   56.3      2.39e-02 4.47e-03   39.670 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.980    0.097    -      -           5.76e-02 3.50e-03   63.770 57
CPL   0.104    0.470     128.1   47.6      1.38e-01 6.59e-02   51.420 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: 24.512000 sec.
T50 in the 50-300 keV band: 6.784000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   45.116   -7.576   37.540
T90    31.360   -3.644   27.716
T50     8.288    4.804   13.092
Peak    1.000    6.460    7.460

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  259.8508 -18.1227 0.0038   40.8   11.0      10.2806    51.3  TRIG_00674734       
------------------------------------------
 
Foreground time interval of the image:
 -7.576  37.540 (delta_t =  45.116 [sec])
Background time interval of the image:
-239.696  -7.576 (delta_t = 232.120 [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   -7.576 sec. to   37.540 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19503     ( -0.0466044   0.046288 )
Norm@50keV  : 1.54601E-02    ( -0.000418242   0.000417557 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.26 using 59 PHA bins.
# Reduced chi-squared =         0.9871 for     57 degrees of freedom 
# Null hypothesis probability =   5.027388e-01
 
Photon flux (15-150 keV)    in 45.12 sec: 1.81345 ( -0.0531344  0.0532663 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.08718e-06 ( -1.90609e-07  1.90355e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -7.576 sec. to   37.540 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.748074     ( -0.201333   0.192502 )
Epeak [keV] : 168.728      ( -33.9004 78.6691 )
Norm@50keV  : 2.38755E-02    ( -0.00397231   0.00496439 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.67 using 59 PHA bins.
# Reduced chi-squared =         0.7084 for     56 degrees of freedom 
# Null hypothesis probability =   9.516156e-01
 
Photon flux (15-150 keV)    in 45.12 sec: 1.76863 ( -0.05588  0.05607 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.98728e-06 ( -1.98122e-07  1.97445e-07 ) ergs/cm2
 
Band function
Time interval is from   -7.576 sec. to   37.540 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.748235   ( -0.191927   0.0953483 )
beta        : -9.37167    ( 9.37167   19.3717 )
Epeak [keV] : 168.790      ( -17.3727 53.5026 )
Norm@50keV   : 2.38731E-02    ( -0.0029477   0.00298613 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.67 using 59 PHA bins.
# Reduced chi-squared =         0.7212 for     55 degrees of freedom 
# Null hypothesis probability =   9.406176e-01
 
Photon flux (15-150 keV)    in 45.12 sec: 1.75498 ( 5.24502  -0.05948 ) 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]    : 21.3315  (  )
R^2/D10^2   : 6.78735E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         242.40 using 59 PHA bins.
# Reduced chi-squared =         4.2526 for     57 degrees of freedom 
# Null hypothesis probability =   1.027678e-24
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.615e-07   1.381e-08
25- 50  1.357e-06   6.024e-08
50-150  4.608e-06   1.755e-07
15-150  6.227e-06   1.805e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (      )
Norm        : 7.88016       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         236.90 using 59 PHA bins.
# Reduced chi-squared =         4.1561 for     57 degrees of freedom 
# Null hypothesis probability =   8.611144e-24
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.853e-07   2.549e-08
25- 50  1.703e-06   5.031e-08
50-150  3.735e-06   1.092e-07
15-150  6.324e-06   1.895e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.68737        (-1.01628      1.13634)
R1^2/D10^2  : 0.682760        (-0.209899      0.329275)
kT2 [keV]   : 31.8095        (-2.76024      3.79215)
R2^2/D10^2  : 1.52159E-02    (-0.00492789   0.00580004)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.84 using 59 PHA bins.
# Reduced chi-squared =         0.6699 for     55 degrees of freedom 
# Null hypothesis probability =   9.715372e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.487e-07   6.272e-08
25- 50  1.554e-06   1.101e-07
50-150  4.915e-06   3.522e-07
15-150  7.018e-06   3.971e-07

Peak spectrum fit

Power-law model
Time interval is from    6.460 sec. to    7.460 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.980480     ( -0.0981998   0.0967126 )
Norm@50keV  : 5.75929E-02    ( -0.00350256   0.0034937 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.77 using 59 PHA bins.
# Reduced chi-squared =          1.119 for     57 degrees of freedom 
# Null hypothesis probability =   2.507007e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.62429 ( -0.408952  0.409758 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.2708e-07 ( -3.95299e-08  3.9729e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    6.460 sec. to    7.460 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.103864     ( -0.495506   0.444876 )
Epeak [keV] : 128.063      ( -26.1467 69.1342 )
Norm@50keV  : 0.138319    ( -0.0485039   0.0833868 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.42 using 59 PHA bins.
# Reduced chi-squared =         0.9183 for     56 degrees of freedom 
# Null hypothesis probability =   6.485487e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.46289 ( -0.41684  0.4175 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.1341e-07 ( -4.1601e-08  4.139e-08 ) ergs/cm2
 
Band function
Time interval is from    6.460 sec. to    7.460 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.02330E-02   ( -0.451836   2.14313 )
beta        : -1.87031    ( 1.90992   0.738969 )
Epeak [keV] : 123.021      ( -65.9363 69.4884 )
Norm@50keV   : 0.145630    ( -0.0519344   1.38302 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.31 using 59 PHA bins.
# Reduced chi-squared =         0.9328 for     55 degrees of freedom 
# Null hypothesis probability =   6.165853e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.44512 ( 0.55488  -0.4213 ) 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]    : 22.3476  (-1.56322  1.73925)
R^2/D10^2   : 0.236991  (-0.0505196   0.0621235)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.20 using 59 PHA bins.
# Reduced chi-squared =          1.249 for     57 degrees of freedom 
# Null hypothesis probability =   9.773216e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.175e-08   2.635e-09
25- 50  1.160e-07   1.030e-08
50-150  4.331e-07   3.990e-08
15-150  5.709e-07   3.980e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 26.9455       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         151.48 using 59 PHA bins.
# Reduced chi-squared =         2.6575 for     57 degrees of freedom 
# Null hypothesis probability =   1.662456e-10
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.710e-08   4.800e-09
25- 50  1.291e-07   1.220e-08
50-150  2.831e-07   6.765e-08
15-150  4.792e-07   9.070e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.0608        (-3.8407      5.42753)
R1^2/D10^2  : 1.16500        (-0.674358      2.38819)
kT2 [keV]   : 31.0400        (-5.84417      27.2081)
R2^2/D10^2  : 6.86654E-02    (-0.0603703   0.0800737)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.62 using 59 PHA bins.
# Reduced chi-squared =         0.9385 for     55 degrees of freedom 
# Null hypothesis probability =   6.046928e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.420e-08   1.564e-08
25- 50  1.237e-07   4.949e-08
50-150  4.573e-07   1.905e-07
15-150  6.152e-07   2.284e-07
Plot creation:
Sun Feb 21 07:47:15 EST 2016