batgrbproduct analysis for trigger=510649

batgrbproduct Analysis for Trigger=510649

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 13 16:55:47 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger510649
======================================================================

  Trigger: 00510649      Segment: 000

  BAT Trigger Time: 346779891.328   [s; MET]
      Trigger Stop: 346779895.424   [s; MET]
               UTC: 2011-12-28T15:44:43.604140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 150.079150215553   Dec: 18.2930458291051  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.28
     Image Trigger?:     NO
     Rate S/N Ratio:     16.8226038412607  [ if not an image trigger ]
     Image S/N Ratio:    11.28

  Flight Position:   [ source = BAT ]
    RA: 150.079150215553   Dec: 18.2930458291051  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 150.063406629793   Dec: 18.2839902929703  [deg; J2000]  
        { 10h 00m 15.2s , +18d 17' 02.4" }
         +/- 1.36453502228945 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.498353257920842 [arcmin] (formal 1-sigma fit error)
    SNR: 19.5111610243057
 
  Angular difference between Flight and Ground position is 1.048638 arcmin
 
  Partial Coding Fraction: 0.3984375    [ including projection effects ]

  Duration
     T90: 101.243999898434 +/- 5.44842881534183
        Measured from: 0.860000014305115
                   to: 102.103999912739     [s; relative to TRIGTIME]
     T50: 47.1199999451637 +/- 0.621288984982854
        Measured from: 47.5479999780655
                   to: 94.6679999232292     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 54.555999994278     
                   to: 55.555999994278     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -12.8199999928474     
                   to: 115.427999973297     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     6.759982   5.890567   2.947174   0.441440
           0.106460   0.107641   0.094899   0.083936 [error]
 Peak      0.413764   0.527503   0.345156   0.062634
           0.016230   0.017633   0.014891   0.010123 [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 2.21e-06 2.63e-06 2.26e-06 3.30e-06 8.27e-06 1.04e-05   erg/cm2
              Error 1.15e-07 7.41e-08 1.01e-07 3.24e-07 2.30e-07 3.94e-07   erg/cm2
Peak flux Power-law 4.97e+00 4.11e+00 2.31e+00 1.91e+00 1.22e+01 1.33e+01   ph/cm2/s
              Error 3.57e-01 1.77e-01 1.26e-01 2.14e-01 5.35e-01 5.42e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.19e-06 2.64e-06 2.26e-06 3.06e-06 8.23e-06 1.01e-05   erg/cm2
              Error 1.07e-07 8.02e-08 8.42e-08 6.34e-07 2.72e-07 6.86e-07   erg/cm2
Peak flux Cutoff-PL 4.79e+00 4.17e+00 2.34e+00 1.54e+00 1.21e+01 1.28e+01   ph/cm2/s
              Error 4.34e-01 2.01e-01 1.37e-01 4.45e-01 5.71e-01 7.91e-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    2.221    0.062    -      -           6.84e-03 2.11e-04   59.680 57
CPL   1.994    0.000       1.3    0.4      8.79e-03 4.71e-04   61.600 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.834    0.075    -      -           8.76e-02 3.73e-03   53.620 57
CPL   1.644    0.269      93.7  -29.8      1.09e-01 3.38e-02   52.280 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: 96.576000 sec.
T50 in the 50-300 keV band: 10.880000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  128.248  -12.820  115.428
T90   101.244    0.860  102.104
T50    47.120   47.548   94.668
Peak    1.000   54.556   55.556

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
  150.0634    18.2840   0.0099    41.3190    13.0057         3.3234719     19.511 TRIG_00510649                 
 
Foreground time interval of the image:
-12.820  40.573 (delta_t =  53.393 [sec])
Background time interval of the image:
-239.328 -12.820 (delta_t = 226.508 [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 4.096000

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 4.096000

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 4.096000

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)

The mask-weighted light curves based on cleaned DPHs

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  -12.820 sec. to  115.428 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.22061     ( -0.0613036   0.0620512 )
Norm@50keV  : 6.84058E-03    ( -0.000212105   0.000210881 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.68 using 59 PHA bins.
# Reduced chi-squared =          1.047 for     57 degrees of freedom 
# Null hypothesis probability =   3.783704e-01
 
Photon flux (15-150 keV)    in 128.2 sec: 1.14490 ( -0.0372663  0.0375815 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.27002e-06 ( -2.29319e-07  2.29697e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -12.820 sec. to  115.428 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99397     ( -1.99397   -1.99397 )
Epeak [keV] : 1.34765      ( -0.310627 0.554126 )
Norm@50keV  : 8.79318E-03    ( -0.000377227   0.000564291 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.60 using 59 PHA bins.
# Reduced chi-squared =          1.100 for     56 degrees of freedom 
# Null hypothesis probability =   2.826491e-01
 
Photon flux (15-150 keV)    in 128.2 sec: 1.14073 ( -0.04531  0.04098 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.23238e-06 ( -2.79617e-07  2.64784e-07 ) ergs/cm2

Band function

Time interval is from  -12.820 sec. to  115.428 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.62555   ( 1.62552   1.62552 )
beta        : -2.22357    ( 2.22357   0.06313 )
Epeak [keV] : 13.6940      ( -13.6942 71.7858 )
Norm@50keV   : 2.03975E-02    ( -0.0113284   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.63 using 59 PHA bins.
# Reduced chi-squared =          1.084 for     55 degrees of freedom 
# Null hypothesis probability =   3.112137e-01
 
Photon flux (15-150 keV)    in 128.2 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]    : 10.9423  (  )
R^2/D10^2   : 0.317662  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         383.96 using 59 PHA bins.
# Reduced chi-squared =         6.7361 for     57 degrees of freedom 
# Null hypothesis probability =   5.276477e-50
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.018e-06   5.660e-08
25- 50  2.858e-06   9.230e-08
50-150  1.925e-06   1.282e-07
15-150  5.801e-06   1.711e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 58.8867       (-4.84633      5.51728)
Norm        : 5.60795       (-0.327683     0.354005)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          91.04 using 59 PHA bins.
# Reduced chi-squared =          1.597 for     57 degrees of freedom 
# Null hypothesis probability =   2.797678e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.801e-06   8.974e-08
25- 50  2.726e-06   8.397e-08
50-150  3.053e-06   1.897e-07
15-150  7.580e-06   2.288e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.30411        (-0.464827      0.5023)
R1^2/D10^2  : 4.61420        (-1.48996      2.38351)
kT2 [keV]   : 18.9617        (-1.54224      1.87407)
R2^2/D10^2  : 2.78848E-02    (-0.00899387   0.0118805)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.59 using 59 PHA bins.
# Reduced chi-squared =          1.229 for     55 degrees of freedom 
# Null hypothesis probability =   1.185582e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.064e-06   2.186e-07
25- 50  2.579e-06   1.551e-07
50-150  3.281e-06   2.551e-07
15-150  7.924e-06   4.846e-07

Peak spectrum fit

Power-law model

Time interval is from   54.556 sec. to   55.556 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83354     ( -0.0747641   0.0755567 )
Norm@50keV  : 8.76024E-02    ( -0.00373315   0.0037189 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.62 using 59 PHA bins.
# Reduced chi-squared =         0.9407 for     57 degrees of freedom 
# Null hypothesis probability =   6.025669e-01
 
Photon flux (15-150 keV)    in 1 sec: 12.2320 ( -0.53429  0.535815 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.05712e-07 ( -3.4632e-08  3.47176e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   54.556 sec. to   55.556 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64395     ( -0.295883   0.241192 )
Epeak [keV] : 93.7143      ( -34.0459 -93.7145 )
Norm@50keV  : 0.109152    ( -0.0241208   0.043464 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.28 using 59 PHA bins.
# Reduced chi-squared =         0.9337 for     56 degrees of freedom 
# Null hypothesis probability =   6.162964e-01
 
Photon flux (15-150 keV)    in 1 sec: 12.0886 ( -0.5705  0.5721 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.95394e-07 ( -3.8188e-08  3.801e-08 ) ergs/cm2

Band function

Time interval is from   54.556 sec. to   55.556 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.410718   ( -0.994616   0.954275 )
beta        : -1.92246    ( -0.144926   0.112657 )
Epeak [keV] : 34.7136      ( -17.9674 113.183 )
Norm@50keV   : 0.758209    ( -0.633342   7920.75 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.81 using 59 PHA bins.
# Reduced chi-squared =         0.9057 for     55 degrees of freedom 
# Null hypothesis probability =   6.725742e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.90482e-07 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.7741  (  )
R^2/D10^2   : 2.21924  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         215.74 using 59 PHA bins.
# Reduced chi-squared =         3.7849 for     57 degrees of freedom 
# Null hypothesis probability =   2.662363e-20
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.681e-08   6.385e-09
25- 50  2.595e-07   1.215e-08
50-150  2.650e-07   2.465e-08
15-150  6.013e-07   2.645e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.9635       (-10.1413      27.4876)
Norm        : 53.3394       (-4.34046     2.74831)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.26 using 59 PHA bins.
# Reduced chi-squared =         0.9871 for     57 degrees of freedom 
# Null hypothesis probability =   5.027165e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.394e-07   1.165e-08
25- 50  2.411e-07   1.235e-08
50-150  3.906e-07   9.975e-08
15-150  7.710e-07   1.064e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.79309        (-0.72935      0.777431)
R1^2/D10^2  : 17.0084        (-5.46562      8.88207)
kT2 [keV]   : 25.2962        (-3.16768      4.38596)
R2^2/D10^2  : 0.130745    (-0.0584037   0.0885823)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.95 using 59 PHA bins.
# Reduced chi-squared =         0.9081 for     55 degrees of freedom 
# Null hypothesis probability =   6.676182e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.365e-07   1.695e-08
25- 50  2.401e-07   2.210e-08
50-150  4.138e-07   6.540e-08
15-150  7.904e-07   8.490e-08

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: 2.40402     ( -0.16817   0.178201 )
Norm@50keV  : 3.16045E-03    ( -0.00036245   0.000354875 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.75 using 59 PHA bins.
# Reduced chi-squared =          1.048 for     57 degrees of freedom 
# Null hypothesis probability =   3.761891e-01
 
Photon flux (15-150 keV)    in 53.39 sec: 0.586142 ( -0.0446645  0.0447695 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.64748e-06 ( -1.43157e-07  1.45637e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.98621     (     )
Epeak [keV] : 1.45318      ( -0.507015 18.4725 )
Norm@50keV  : 5.35955E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.57 using 59 PHA bins.
# Reduced chi-squared =          1.099 for     56 degrees of freedom 
# Null hypothesis probability =   2.835204e-01
 
Photon flux (15-150 keV)    in 53.39 sec: 0.585865 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.64623e-06 ( -1.57661e-07  1.46801e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.33289   ( 2.33289   2.33289 )
beta        : -2.40402    ( -0.178203   0.168225 )
Epeak [keV] : 25.4223      ( -25.4223 -25.4223 )
Norm@50keV   : 0.429551    ( -0.0492624   0.0482322 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.75 using 59 PHA bins.
# Reduced chi-squared =          1.086 for     55 degrees of freedom 
# Null hypothesis probability =   3.073479e-01
 
Photon flux (15-150 keV)    in 53.39 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)  = 2.63e-06
S(50-100 keV) = 2.26e-06

T90 vs. Hardness ratio plot

T90                                   = 101.243999898434 sec.
Hardness ratio (energy fluence ratio) = 0.859316

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.871388
Count Ratio (50-100 keV) / (15-25 keV) = 0.435974

Mask shadow pattern

IMX = 8.565586181937285E-01, IMY = -1.978418512008792E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

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:
-239.328000 -12.820000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6410  22.0135    0.3  26.7  145.6   9.2785  34.0    0.4	Crab                          
127.8268  78.3131    2.8  40.8  -88.1   4.8447   4.2 ------	UNKNOWN

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

Time interval of the image:
-12.820000 40.572590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.5589  22.1247   12.5  26.7  145.9   0.1111   0.9    7.8	Crab                          
 63.4992   8.2395    2.1  50.3  151.2   2.5296   5.6 ------	UNKNOWN                       
150.0634  18.2840    0.6  41.3   13.0   3.3234  19.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
132.972600 962.732800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
131.7109 -30.4594    3.0  51.8    5.0   5.5424   3.9 ------	UNKNOWN

Plot creation:
Sat May 30 20:48:24 EDT 2015