batgrbproduct analysis for trigger=313417

batgrbproduct Analysis for Trigger=313417

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Jan 20 01:13:48 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger313417
======================================================================

  Trigger: 00313417      Segment: 000

  BAT Trigger Time: 234511649.856   [s; MET]
      Trigger Stop: 234511650.88   [s; MET]
               UTC: 2008-06-07T06:07:27.008340    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 194.967287472106   Dec: 15.9004689525493  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.87
     Image Trigger?:     NO
     Rate S/N Ratio:     238.88490952758  [ if not an image trigger ]
     Image S/N Ratio:    17.87

  Flight Position:   [ source = BAT ]
    RA: 194.967287472106   Dec: 15.9004689525493  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 194.96360541938   Dec: 15.9101271928674  [deg; J2000]  
        { 12h 59m 51.3s , +15d 54' 36.5" }
         +/- 0.896855558096024 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.286990466310308 [arcmin] (formal 1-sigma fit error)
    SNR: 35.5351096657511
 
  Angular difference between Flight and Ground position is 0.617216 arcmin
 
  Partial Coding Fraction: 0.1113281    [ including projection effects ]

  Duration
     T90: 78.972000002861 +/- 3.04169689285327
        Measured from: -2.99599999189377
                   to: 75.9760000109673     [s; relative to TRIGTIME]
     T50: 22.5799999833107 +/- 1.68855913334988
        Measured from: 1.70800000429153
                   to: 24.2879999876022     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.50400000810623     
                   to: 2.50400000810623     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.96000000834465     
                   to: 155.840000003576     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     7.651197  11.876875  11.482594   4.147420
           0.132098   0.158146   0.160673   0.127372 [error]
 Peak      0.369364   0.895090   1.165779   0.497568
           0.028047   0.039659   0.047695   0.037801 [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 2.47e-06 5.32e-06 9.01e-06 3.50e-05 2.47e-05 5.18e-05   erg/cm2
              Error 1.02e-07 1.27e-07 1.78e-07 1.69e-06 4.57e-07 1.74e-06   erg/cm2
Peak flux Power-law 4.31e+00 6.57e+00 7.53e+00 1.65e+01 2.33e+01 3.49e+01   ph/cm2/s
              Error 4.12e-01 3.83e-01 3.64e-01 1.73e+00 1.07e+00 1.92e+00   ph/cm2/s
 
Fluence   Cutoff-PL 2.45e-06 5.32e-06 9.01e-06 3.47e-05 2.47e-05 5.06e-05   erg/cm2
              Error 1.10e-07 1.26e-07 1.89e-07 1.63e-06 4.55e-07 2.16e-06   erg/cm2
Peak flux Cutoff-PL 4.14e+00 6.62e+00 7.68e+00 1.42e+01 2.32e+01 3.27e+01   ph/cm2/s
              Error 5.15e-01 4.02e-01 4.74e-01 2.74e+00 1.08e+00 2.93e+00   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    1.241    0.035    -      -           1.52e-02 2.82e-04   40.300 57
CPL   1.235    0.052    9997.5    0.0      1.53e-02 6.67e-04   40.440 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.805    0.078    -      -           2.03e-01 9.40e-03   34.480 57
CPL   0.659    0.245     552.4    0.0      2.35e-01 5.25e-02   33.760 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: 58.688000 sec.
T50 in the 50-300 keV band: 6.528000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  161.800   -5.960  155.840
T90    78.972   -2.996   75.976
T50    22.580    1.708   24.288
Peak    1.000    1.504    2.504

Click here for the BAT GCN circular template

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  194.9636    15.9101   0.0054    40.4736   123.2433        25.4126879     35.535 TRIG_00313417                 
 
Foreground time interval of the image:
 -5.960  11.845 (delta_t =  17.805 [sec])
Background time interval of the image:
-239.856  -5.960 (delta_t = 233.896 [sec])

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
5) Time of each bin is in the middle of the bin.

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

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

8 ms binning

From T100_start-3 s to T100_start+3 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

2 ms binning

From T100_start-1 s to T100_start+1 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Quad-rate summed light curves (from T0-300s to T0+1000s)

Spectral Evolution

Spectra

Notes:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from   -5.960 sec. to  155.840 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.24061     ( -0.0351177   0.0349637 )
Norm@50keV  : 1.52351E-02    ( -0.000282121   0.000281573 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.30 using 59 PHA bins.
# Reduced chi-squared =         0.7071 for     57 degrees of freedom 
# Null hypothesis probability =   9.540284e-01
 
Photon flux (15-150 keV)    in 161.8 sec: 1.79919 ( -0.036969  0.0371838 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.47316e-05 ( -4.5708e-07  4.57485e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -5.960 sec. to  155.840 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23549     ( -0.0682095   0.0356454 )
Epeak [keV] : 9997.47      ( -9998.15 -9998.15 )
Norm@50keV  : 1.52957E-02    ( -0.000277797   0.00105665 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.44 using 59 PHA bins.
# Reduced chi-squared =         0.7221 for     56 degrees of freedom 
# Null hypothesis probability =   9.417718e-01
 
Photon flux (15-150 keV)    in 161.8 sec: 1.79953 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.47227e-05 ( -4.46244e-07  4.64366e-07 ) ergs/cm2

Band function

Time interval is from   -5.960 sec. to  155.840 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.945961   ( 0.94796   5.92019 )
beta        : -1.24058    ( -0.0350139   0.035055 )
Epeak [keV] : 54.8832      ( -53.2596 -53.2596 )
Norm@50keV   : 2.89721E-02    ( -0.00924688   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.30 using 59 PHA bins.
# Reduced chi-squared =         0.7328 for     55 degrees of freedom 
# Null hypothesis probability =   9.311944e-01
 
Photon flux (15-150 keV)    in 161.8 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]    : 21.4676  (  )
R^2/D10^2   : 6.29211E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         694.13 using 59 PHA bins.
# Reduced chi-squared =         12.178 for     57 degrees of freedom 
# Null hypothesis probability =  2.568059e-110
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.779e-07   3.600e-08
25- 50  4.575e-06   1.359e-07
50-150  1.574e-05   4.110e-07
15-150  2.119e-05   4.530e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 7.78428       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         347.38 using 59 PHA bins.
# Reduced chi-squared =         6.0944 for     57 degrees of freedom 
# Null hypothesis probability =   3.000685e-43
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.136e-06   6.391e-08
25- 50  6.033e-06   1.205e-07
50-150  1.323e-05   2.726e-07
15-150  2.240e-05   4.530e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.33622        (-0.607478      0.646402)
R1^2/D10^2  : 0.895366        (-0.196472      0.266957)
kT2 [keV]   : 36.0497        (-2.49082      3.07373)
R2^2/D10^2  : 1.00549E-02    (-0.00229018   0.00263036)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.92 using 59 PHA bins.
# Reduced chi-squared =         0.9258 for     55 degrees of freedom 
# Null hypothesis probability =   6.311784e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.167e-06   1.408e-07
25- 50  5.456e-06   1.869e-07
50-150  1.724e-05   6.472e-07
15-150  2.486e-05   8.414e-07

Peak spectrum fit

Power-law model

Time interval is from    1.504 sec. to    2.504 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.804616     ( -0.0789062   0.078049 )
Norm@50keV  : 0.202804    ( -0.00941822   0.00938049 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.48 using 59 PHA bins.
# Reduced chi-squared =         0.6049 for     57 degrees of freedom 
# Null hypothesis probability =   9.920607e-01
 
Photon flux (15-150 keV)    in 1 sec: 23.3050 ( -1.06698  1.06731 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.36536e-06 ( -1.19159e-07  1.19368e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from    1.504 sec. to    2.504 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.658698     ( -0.310058   0.179817 )
Epeak [keV] : 552.385      ( -552.388 -552.388 )
Norm@50keV  : 0.234559    ( -0.0233761   0.081674 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.76 using 59 PHA bins.
# Reduced chi-squared =         0.6029 for     56 degrees of freedom 
# Null hypothesis probability =   9.918983e-01
 
Photon flux (15-150 keV)    in 1 sec: 23.2303 ( -1.0767  1.0768 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.35829e-06 ( 0  0 ) ergs/cm2

Band function

Time interval is from    1.504 sec. to    2.504 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.887641   ( 0.887641   0.887641 )
beta        : -0.804616    ( -0.0780476   0.0789095 )
Epeak [keV] : 15.5065      ( -15.5065 -15.5065 )
Norm@50keV   : 0.288474    ( -0.0949155   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.48 using 59 PHA bins.
# Reduced chi-squared =         0.6269 for     55 degrees of freedom 
# Null hypothesis probability =   9.863232e-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]    : 25.4070  (-1.66192  1.83212)
R^2/D10^2   : 0.572471  (-0.105535   0.126429)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         109.12 using 59 PHA bins.
# Reduced chi-squared =         1.9145 for     57 degrees of freedom 
# Null hypothesis probability =   3.983220e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.364e-08   5.830e-09
25- 50  3.640e-07   2.645e-08
50-150  1.738e-06   1.280e-07
15-150  2.166e-06   1.225e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 86.9572       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         258.24 using 59 PHA bins.
# Reduced chi-squared =         4.5305 for     57 degrees of freedom 
# Null hypothesis probability =   2.092824e-27
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.165e-07   1.055e-08
25- 50  4.165e-07   2.745e-08
50-150  9.135e-07   1.803e-07
15-150  1.547e-06   9.950e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.37750        (-1.77649      2.24979)
R1^2/D10^2  : 5.76521        (-2.49696      4.84945)
kT2 [keV]   : 42.4364        (-7.10923      14.1621)
R2^2/D10^2  : 0.111546    (-0.060789   0.0804906)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          31.64 using 59 PHA bins.
# Reduced chi-squared =         0.5753 for     55 degrees of freedom 
# Null hypothesis probability =   9.951798e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.255e-07   2.781e-08
25- 50  4.001e-07   6.795e-08
50-150  1.865e-06   4.205e-07
15-150  2.391e-06   4.445e-07

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.979581     ( -0.0364522   0.0362742 )
Norm@50keV  : 9.72369E-02    ( -0.00202416   0.00201692 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.56 using 59 PHA bins.
# Reduced chi-squared =         0.6765 for     57 degrees of freedom 
# Null hypothesis probability =   9.709066e-01
 
Photon flux (15-150 keV)    in 17.8 sec: 11.1839 ( -0.238695  0.238717 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.88534e-05 ( -3.85009e-07  3.84907e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.872941     ( -0.146793   0.0562412 )
Epeak [keV] : 672.591      ( -672.591 -672.591 )
Norm@50keV  : 0.107242    ( -0.00940067   0.0150499 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.95 using 59 PHA bins.
# Reduced chi-squared =         0.6597 for     56 degrees of freedom 
# Null hypothesis probability =   9.768763e-01
 
Photon flux (15-150 keV)    in 17.8 sec: 11.1207 ( -0.2513  0.2518 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.88192e-05 ( 0  0 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.597677   ( 0.795361   0.795361 )
beta        : -1.01061    ( -0.0362735   0.0364531 )
Epeak [keV] : 149.368      ( -148.15 9774.76 )
Norm@50keV   : 0.157458    ( -0.0626996   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.67 using 59 PHA bins.
# Reduced chi-squared =         0.6667 for     55 degrees of freedom 
# Null hypothesis probability =   9.729538e-01
 
Photon flux (15-150 keV)    in 17.8 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 5.32e-06
S(50-100 keV) = 9.01e-06

T90 vs. Hardness ratio plot

T90                                   = 78.972000002861 sec.
Hardness ratio (energy fluence ratio) = 1.69361

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.55229
Count Ratio (50-100 keV) / (15-25 keV) = 1.50076

Mask shadow pattern

IMX = -4.677664989216760E-01, IMY = -7.136450700860668E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

Spacecraft aspect plot

Bright source in the pre-burst/pre-slew/post-slew images

Pre-burst image of 15-350 keV band

Time interval of the image:
-239.856000 -5.960000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
146.9026   7.6799    2.9  53.4 -171.8   1.8031   3.9 ------	UNKNOWN

Pre-slew background subtracted image of 15-350 keV band

Time interval of the image:
-5.960000 11.844600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
194.9636  15.9101    0.3  40.5  123.2  25.4095  35.5 ------	UNKNOWN                       
252.1039  43.0439    3.6  47.1   39.4   2.3282   3.2 ------	UNKNOWN                       
250.1350  45.4818    2.9  44.5   38.0   1.8868   4.0 ------	UNKNOWN                       
240.1347  50.6916    2.6  36.1   37.2   1.1630   4.4 ------	UNKNOWN                       
 56.3247  72.6017    3.1  47.0  -53.1   1.2691   3.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
71.044600 962.180400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
194.9602  15.8976    1.9   0.0  121.1   2.9136   6.1 ------	UNKNOWN                       
152.1713 -25.9990    3.5  59.1 -166.1  11.5649   3.3 ------	UNKNOWN                       
168.1982  23.7763    5.0  26.3  -99.8   1.4071   2.3 ------	UNKNOWN                       
171.4489  63.9822    4.8  50.7  -44.5   6.4771   2.4 ------	UNKNOWN

Plot creation:
Sun May 31 07:16:13 EDT 2015