batgrbproduct Analysis for Trigger=612974

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Sep 18 02:15:29 EDT 2014
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger612974/GCN5_download_cron
======================================================================

  Trigger: 00612974      Segment: 000

  BAT Trigger Time: 432653448   [s; MET]
      Trigger Stop: 432654360   [s; MET]
               UTC: 2014-09-17T13:30:35.461240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 256.63349311699   Dec: 23.9503705825278  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.64
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.64

  Flight Position:   [ source = BAT ]
    RA: 256.63349311699   Dec: 23.9503705825278  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 256.655032695048   Dec: 24.0215811720963  [deg; J2000]  
        { 17h 06m 37.2s , +24d 01' 17.7" }
         +/- 2.82029343462646 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.49312468081859 [arcmin] (formal 1-sigma fit error)
    SNR: 6.91577433646333
 
  Angular difference between Flight and Ground position is 4.432791 arcmin
 
  Partial Coding Fraction: 0.9921875    [ including projection effects ]

  Duration
     T90: 146.079999983311 +/- 25.7144166085638
        Measured from: 547.25200009346
                   to: 693.332000076771     [s; relative to TRIGTIME]
     T50: 100.727999925613 +/- 35.0724740752859
        Measured from: 558.268000125885
                   to: 658.996000051498     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 585.980000019073     
                   to: 586.980000019073     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 528.315999984741     
                   to: 711.319999992847     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.765829   0.530942   0.256490   0.046895
           0.071280   0.072127   0.061614   0.053498 [error]
 Peak      0.008875   0.014065   0.009869   0.008212
           0.005402   0.005304   0.004751   0.003935 [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 2.27e-07 2.26e-07 1.58e-07 1.74e-07 6.79e-07 7.84e-07   erg/cm2
              Error 3.71e-08 3.61e-08 5.26e-08 1.09e-07 1.20e-07 1.85e-07   erg/cm2
Peak flux Power-law 7.57e-02 8.30e-02 6.49e-02 8.35e-02 2.55e-01 3.07e-01   ph/cm2/s
              Error 6.51e-02 6.29e-02 5.10e-02 1.25e-01 1.23e-01 1.51e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.26e-07 2.29e-07 1.54e-07 1.30e-07 6.70e-07 7.39e-07   erg/cm2
              Error 3.83e-08 4.22e-08 5.96e-08 1.26e-07 1.31e-07 2.13e-07   erg/cm2
Peak flux Cutoff-PL 7.81e-02 8.38e-02 6.40e-02 7.94e-02 2.56e-01 3.06e-01   ph/cm2/s
              Error 6.86e-02 4.74e-02 4.05e-02 7.41e-02 1.23e-01 1.61e-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    2.519    0.320    -      -           3.69e-04 8.99e-05   46.710 57
CPL   1.978    0.000       1.6    0.0      7.94e-04 0.00e+00   47.120 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.355    0.995    -      -           2.11e-03 1.02e-03   52.520 57
CPL   2.162    0.000      59.3    0.0      7.57e-04 0.00e+00   52.470 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  183.004  528.316  711.320
T90   146.080  547.252  693.332
T50   100.728  558.268  658.996
Peak    1.000  585.980  586.980

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  256.6550 +24.0216 0.0278   17.9 -176.4       0.9619     6.9  TRIG_00612974       
------------------------------------------
 
Foreground time interval of the image:
528.316 711.320 (delta_t = 183.004 [sec])
Background time interval of the image:
-150.000 -116.937 (delta_t =  33.063 [sec])
-116.000 282.650 (delta_t = 398.650 [sec])
293.000 528.316 (delta_t = 235.316 [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  528.316 sec. to  711.320 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.51912     ( -0.298866   0.341373 )
Norm@50keV  : 3.69236E-04    ( -9.04263e-05   8.9463e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.71 using 59 PHA bins.
# Reduced chi-squared =         0.8194 for     57 degrees of freedom 
# Null hypothesis probability =   8.328477e-01
 
Photon flux (15-150 keV)    in 183 sec: 7.33926E-02 ( -0.00970006  0.00970374 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.79217e-07 ( -1.17076e-07  1.23221e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  528.316 sec. to  711.320 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.97832     (     )
Epeak [keV] : 1.57765      (   )
Norm@50keV  : 7.94051E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.12 using 59 PHA bins.
# Reduced chi-squared =         0.8414 for     56 degrees of freedom 
# Null hypothesis probability =   7.950519e-01
 
Photon flux (15-150 keV)    in 183 sec: 7.30820E-02 ( -0.0098922  0.0098909 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.69839e-07 ( -1.29952e-07  1.31125e-07 ) ergs/cm2
 
Band function
Time interval is from  528.316 sec. to  711.320 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.92909   ( 2.92909   2.92909 )
beta        : -2.51909    ( -0.341367   0.298784 )
Epeak [keV] : 4.14252      ( -4.14252 -4.14252 )
Norm@50keV   : 5.01853E-02    ( -0.0122911   0.0121584 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.71 using 59 PHA bins.
# Reduced chi-squared =         0.8492 for     55 degrees of freedom 
# Null hypothesis probability =   7.792934e-01
 
Photon flux (15-150 keV)    in 183 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]    : 6.63354  (-1.14375  1.38443)
R^2/D10^2   : 0.165368  (-0.0894899   0.205748)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.15 using 59 PHA bins.
# Reduced chi-squared =          1.090 for     57 degrees of freedom 
# Null hypothesis probability =   2.980091e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.016e-07   4.860e-08
25- 50  2.482e-07   6.792e-08
50-150  3.373e-08   1.649e-08
15-150  4.836e-07   1.046e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 32.0472       (-9.9204      15.6097)
Norm        : 0.552002       (-0.14638     0.230821)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.90 using 59 PHA bins.
# Reduced chi-squared =         0.8579 for     57 degrees of freedom 
# Null hypothesis probability =   7.686760e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.123e-07   4.019e-08
25- 50  2.514e-07   4.767e-08
50-150  1.499e-07   7.054e-08
15-150  6.136e-07   1.198e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.89961        (-1.24469      1.34257)
R1^2/D10^2  : 1.31761        (-0.953723      8.10867)
kT2 [keV]   : 14.6458        (-4.56905      7.2639)
R2^2/D10^2  : 4.65568E-03    (-0.00377246   0.0184727)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.74 using 59 PHA bins.
# Reduced chi-squared =         0.8316 for     55 degrees of freedom 
# Null hypothesis probability =   8.087912e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.320e-07   1.239e-07
25- 50  2.142e-07   1.110e-07
50-150  2.161e-07   1.369e-07
15-150  6.624e-07   3.504e-07

Peak spectrum fit

Power-law model
Time interval is from  585.980 sec. to  586.980 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.35528     ( -1.01008   0.979308 )
Norm@50keV  : 2.11313E-03    ( -0.00104148   0.000998615 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.52 using 59 PHA bins.
# Reduced chi-squared =         0.9213 for     57 degrees of freedom 
# Null hypothesis probability =   6.437603e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.254849 ( -0.122451  0.123232 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.06143e-08 ( -1.0735e-08  1.11912e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  585.980 sec. to  586.980 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.16211     (     )
Epeak [keV] : 59.2683      (   )
Norm@50keV  : 7.57416E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.47 using 59 PHA bins.
# Reduced chi-squared =         0.9370 for     56 degrees of freedom 
# Null hypothesis probability =   6.092424e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.255771 ( -0.123372  0.122007 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.06381e-08 ( -1.09049e-08  1.10574e-08 ) ergs/cm2
 
Band function
Time interval is from  585.980 sec. to  586.980 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.05141   ( 1.04794   1.04794 )
beta        : -1.35293    ( 1.35766   1.01296 )
Epeak [keV] : 51.1769      ( -53.7469 -53.7469 )
Norm@50keV   : 4.00593E-03    ( -0.00400742   242344 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.52 using 59 PHA bins.
# Reduced chi-squared =         0.9548 for     55 degrees of freedom 
# Null hypothesis probability =   5.701053e-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]    : 16.9720  (-17.0145  27.8081)
R^2/D10^2   : 1.88571E-02  (-0.0186339   0.230224)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.06 using 59 PHA bins.
# Reduced chi-squared =         0.9484 for     57 degrees of freedom 
# Null hypothesis probability =   5.861905e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.107e-09   7.550e-10
25- 50  4.890e-09   3.227e-09
50-150  1.005e-08   7.470e-09
15-150  1.605e-08   1.070e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-199.363      -199.363)
Norm        : 1.04906       (-0.497379     0.49739)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.77 using 59 PHA bins.
# Reduced chi-squared =         0.9258 for     57 degrees of freedom 
# Null hypothesis probability =   6.343531e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.612e-09   1.788e-09
25- 50  5.025e-09   3.345e-09
50-150  1.102e-08   7.250e-09
15-150  1.866e-08   1.229e-08
Double BB
R1^2/D10^2  : 9.87305E-02        (-0.792594      -0.792594)
kT2 [keV]   : 86.3761        (      )
R2^2/D10^2  : 1.57397E-04    (   )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.79 using 59 PHA bins.
#Fit statistic : Chi-Squared =          52.75 using 59 PHA bins.
#Fit statistic : Chi-Squared =          52.74 using 59 PHA bins.
# Reduced chi-squared =         0.9599 for     55 degrees of freedom 
# Reduced chi-squared =         0.9592 for     55 degrees of freedom 
# Reduced chi-squared =         0.9589 for     55 degrees of freedom 
# Null hypothesis probability =   5.594591e-01
# Null hypothesis probability =   5.608884e-01
# Null hypothesis probability =   5.614553e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.579e-09   1.664e-09
25- 50  4.188e-09   2.321e-09
50-150  1.318e-08   9.045e-09
15-150  1.994e-08   1.197e-08
Plot creation:
Thu Sep 18 02:19:00 EDT 2014