batgrbproduct analysis for trigger=103906

batgrbproduct Analysis for Trigger=103906

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): Wed Jan 22 23:09:09 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger103906
======================================================================

  Trigger: 00103906      Segment: 000

  BAT Trigger Time: 128578794.56   [s; MET]
      Trigger Stop: 128578795.584   [s; MET]
               UTC: 2005-01-28T04:19:55.191240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 219.591125684255   Dec: -34.7619892410826  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12
     Image Trigger?:     NO
     Rate S/N Ratio:     35.5668384875575  [ if not an image trigger ]
     Image S/N Ratio:    12

  Flight Position:   [ source = BAT ]
    RA: 219.591125684255   Dec: -34.7619892410826  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 219.584372813514   Dec: -34.7623161882462  [deg; J2000]  
        { 14h 38m 20.2s , -34d 45' 44.3" }
         +/- 1.10700367612749 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.306541241423414 [arcmin] (formal 1-sigma fit error)
    SNR: 26.3056047168613
 
  Angular difference between Flight and Ground position is 0.333437 arcmin
 
  Partial Coding Fraction: 0.1035156    [ including projection effects ]

  Duration
     T90: 28 +/- 9.05538513813742
        Measured from: -6.56000000238419
                   to: 21.4399999976158     [s; relative to TRIGTIME]
     T50: 8 +/- 1
        Measured from: -2.56000000238419
                   to: 5.43999999761581     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 5.43999999761581     
                   to: 6.43999999761581     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -7.56000000238419     
                   to: 25.4399999976158     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.385772   2.450934   2.426805   0.717987
           0.091115   0.099820   0.092650   0.070412 [error]
 Peak      0.163155   0.271392   0.330029   0.083939
           0.020360   0.024358   0.024849   0.016711 [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 6.06e-07 1.21e-06 1.87e-06 6.33e-06 5.21e-06 1.00e-05   erg/cm2
              Error 5.00e-08 6.08e-08 8.91e-08 6.62e-07 2.28e-07 7.10e-07   erg/cm2
Peak flux Power-law 2.15e+00 2.41e+00 1.93e+00 2.57e+00 7.45e+00 9.08e+00   ph/cm2/s
              Error 3.48e-01 2.45e-01 1.91e-01 5.15e-01 6.84e-01 8.04e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.13e-07 1.26e-06 2.01e-06 3.15e-06 5.11e-06 6.93e-06   erg/cm2
              Error 6.33e-08 6.83e-08 1.13e-07 9.76e-07 2.37e-07 9.75e-07   erg/cm2
Peak flux Cutoff-PL 1.70e+00 2.51e+00 2.17e+00 1.41e+00 7.21e+00 7.79e+00   ph/cm2/s
              Error 4.55e-01 2.74e-01 2.63e-01 6.38e-01 7.07e-01 9.77e-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    1.370    0.071    -      -           1.62e-02 6.92e-04   63.340 57
CPL   0.714    0.323     113.2   34.7      3.18e-02 1.04e-02   49.460 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.319    0.142    -      -           6.22e-02 5.43e-03   72.380 57
CPL   0.470    0.674     107.0   72.8      1.46e-01 1.05e-01   66.740 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: 12.800000 sec.
T50 in the 50-300 keV band: 7.488000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   33.000   -7.560   25.440
T90    28.000   -6.560   21.440
T50     8.000   -2.560    5.440
Peak    1.000    5.440    6.440

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
  219.5844   -34.7623   0.0072    51.4509   -36.1965         6.9394960     26.306 TRIG_00103906                 
 
Foreground time interval of the image:
 -7.560  10.941 (delta_t =  18.501 [sec])
Background time interval of the image:
-299.560  -7.560 (delta_t = 292.000 [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

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)

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   -7.560 sec. to   25.440 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.36995     ( -0.0714256   0.0711243 )
Norm@50keV  : 1.62356E-02    ( -0.000692201   0.000691907 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.34 using 59 PHA bins.
# Reduced chi-squared =          1.111 for     57 degrees of freedom 
# Null hypothesis probability =   2.628274e-01
 
Photon flux (15-150 keV)    in 33 sec: 1.96414 ( -0.0916457  0.0919082 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.20984e-06 ( -2.2812e-07  2.28286e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -7.560 sec. to   25.440 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.713630     ( -0.334615   0.311401 )
Epeak [keV] : 113.155      ( -20.0623 49.2456 )
Norm@50keV  : 3.17596E-02    ( -0.00846151   0.0124245 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.46 using 59 PHA bins.
# Reduced chi-squared =         0.8832 for     56 degrees of freedom 
# Null hypothesis probability =   7.190460e-01
 
Photon flux (15-150 keV)    in 33 sec: 1.90123 ( -0.09543  0.09598 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.10741e-06 ( -2.37864e-07  2.36709e-07 ) ergs/cm2

Band function

Time interval is from   -7.560 sec. to   25.440 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.713594   ( -0.294474   0.303002 )
beta        : -10.0000    ( 10   8.17124e-14 )
Epeak [keV] : 113.135      ( -12.7976 49.2415 )
Norm@50keV   : 3.17596E-02    ( -0.00846884   0.0124234 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.46 using 59 PHA bins.
# Reduced chi-squared =         0.8993 for     55 degrees of freedom 
# Null hypothesis probability =   6.853791e-01
 
Photon flux (15-150 keV)    in 33 sec: 1.90639 (    ) 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]    : 18.6961  (  )
R^2/D10^2   : 0.110404  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         125.19 using 59 PHA bins.
# Reduced chi-squared =         2.1963 for     57 degrees of freedom 
# Null hypothesis probability =   5.059498e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.518e-07   2.168e-08
25- 50  1.197e-06   6.930e-08
50-150  3.065e-06   1.883e-07
15-150  4.514e-06   2.079e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 8.35499       (-0.356227     0.356104)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          78.69 using 59 PHA bins.
# Reduced chi-squared =          1.380 for     57 degrees of freedom 
# Null hypothesis probability =   3.007168e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.865e-07   3.416e-08
25- 50  1.321e-06   6.881e-08
50-150  2.896e-06   1.419e-07
15-150  4.903e-06   2.574e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.81055        (-1.76022      2.16281)
R1^2/D10^2  : 1.06855        (-0.546779      1.45701)
kT2 [keV]   : 26.3642        (-3.26325      5.76087)
R2^2/D10^2  : 2.76572E-02    (-0.0149182   0.0189351)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.56 using 59 PHA bins.
# Reduced chi-squared =         0.9556 for     55 degrees of freedom 
# Null hypothesis probability =   5.684116e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.890e-07   9.587e-08
25- 50  1.264e-06   1.881e-07
50-150  3.339e-06   4.767e-07
15-150  5.093e-06   6.551e-07

Peak spectrum fit

Power-law model

Time interval is from    5.440 sec. to    6.440 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31935     ( -0.14162   0.142389 )
Norm@50keV  : 6.22358E-02    ( -0.00543228   0.00543215 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.38 using 59 PHA bins.
# Reduced chi-squared =          1.270 for     57 degrees of freedom 
# Null hypothesis probability =   8.241555e-02
 
Photon flux (15-150 keV)    in 1 sec: 7.45199 ( -0.682725  0.684526 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.12151e-07 ( -5.6915e-08  5.70373e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    5.440 sec. to    6.440 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.470221     ( -0.725434   0.623115 )
Epeak [keV] : 107.032      ( -24.5536 120.984 )
Norm@50keV  : 0.145660    ( -0.0663436   0.142881 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.74 using 59 PHA bins.
# Reduced chi-squared =          1.192 for     56 degrees of freedom 
# Null hypothesis probability =   1.541307e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.20809 ( -0.70609  0.7077 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.05274e-07 ( -5.8354e-08  5.8264e-08 ) ergs/cm2

Band function

Time interval is from    5.440 sec. to    6.440 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.470551   ( -0.408065   1.01369 )
beta        : -10.0000    ( 10   0 )
Epeak [keV] : 107.023      ( -24.5675 121.489 )
Norm@50keV   : 0.145628    ( -0.0663115   0.142702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.75 using 59 PHA bins.
# Reduced chi-squared =          1.214 for     55 degrees of freedom 
# Null hypothesis probability =   1.332047e-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]    : 19.8542  (-1.83884  2.05417)
R^2/D10^2   : 0.360236  (-0.102438   0.139947)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          80.28 using 59 PHA bins.
# Reduced chi-squared =          1.408 for     57 degrees of freedom 
# Null hypothesis probability =   2.279529e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.745e-08   4.820e-09
25- 50  1.361e-07   1.875e-08
50-150  3.973e-07   5.680e-08
15-150  5.608e-07   5.770e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 31.3579       (-2.76253     2.76221)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          78.74 using 59 PHA bins.
# Reduced chi-squared =          1.381 for     57 degrees of freedom 
# Null hypothesis probability =   2.978975e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.807e-08   9.000e-09
25- 50  1.502e-07   2.410e-08
50-150  3.294e-07   1.124e-07
15-150  5.576e-07   1.306e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.93706        (-1.28688      2.02984)
R1^2/D10^2  : 55.4342        (-46.9783      435.866)
kT2 [keV]   : 22.5826        (-2.47245      3.15692)
R2^2/D10^2  : 0.218176    (-0.0820043   0.107834)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.97 using 59 PHA bins.
# Reduced chi-squared =          1.090 for     55 degrees of freedom 
# Null hypothesis probability =   3.004582e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.701e-08   2.956e-08
25- 50  1.253e-07   2.711e-08
50-150  4.164e-07   7.135e-08
15-150  6.087e-07   9.160e-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: 1.33722     ( -0.0667922   0.0665574 )
Norm@50keV  : 2.64071E-02    ( -0.00104695   0.00104636 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.79 using 59 PHA bins.
# Reduced chi-squared =          1.154 for     57 degrees of freedom 
# Null hypothesis probability =   1.988363e-01
 
Photon flux (15-150 keV)    in 18.5 sec: 3.17306 ( -0.137288  0.137667 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.78525e-06 ( -1.94716e-07  1.94844e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.729520     ( -0.309701   0.289939 )
Epeak [keV] : 122.863      ( -22.7738 57.0671 )
Norm@50keV  : 4.86199E-02    ( -0.0119869   0.017018 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.17 using 59 PHA bins.
# Reduced chi-squared =         0.9315 for     56 degrees of freedom 
# Null hypothesis probability =   6.207894e-01
 
Photon flux (15-150 keV)    in 18.5 sec: 3.07625 ( -0.14326  0.14382 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.70695e-06 ( -2.01706e-07  2.01169e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.729489   ( -0.181592   0.28635 )
beta        : -10.0000    ( 10   0 )
Epeak [keV] : 122.842      ( -16.894 57.0652 )
Norm@50keV   : 4.86195E-02    ( -0.0120112   0.0170228 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.17 using 59 PHA bins.
# Reduced chi-squared =         0.9485 for     55 degrees of freedom 
# Null hypothesis probability =   5.836215e-01
 
Photon flux (15-150 keV)    in 18.5 sec: 3.11064 (    ) 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)  = 1.21e-06
S(50-100 keV) = 1.87e-06

T90 vs. Hardness ratio plot

T90                                   = 28 sec.
Hardness ratio (energy fluence ratio) = 1.54545

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.76864
Count Ratio (50-100 keV) / (15-25 keV) = 1.75123

Mask shadow pattern

IMX = 1.012749232335095E+00, IMY = 7.411253042549734E-01

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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:
-299.560000 -7.560000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
225.7320 -30.7524    3.0  50.7  -44.5   3.3675   3.8 ------	UNKNOWN                       
243.3010  16.5354    2.8  43.5 -114.8   3.1535   4.1 ------	UNKNOWN

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

Time interval of the image:
-7.560000 10.940600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
206.3397 -17.8048    2.3  31.4  -28.4   0.2641   5.1 ------	UNKNOWN                       
219.5844 -34.7623    0.4  51.5  -36.2   6.9400  26.3 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
75.540590 302.524600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.3306 -60.5856    2.2  40.5   19.2   1.5625   5.2    2.3	Cen X-3                       
186.6784 -62.7963    2.5  34.7   10.1   1.0589   4.7    1.7	GX 301-2                      
244.9798 -15.6421    0.2  29.8 -139.3  10.4971  49.2    0.1	Sco X-1                       
256.0212 -37.7907    2.0  29.4  -89.0   1.4112   5.8    3.6	4U 1700-377                   
256.5429 -36.5446    6.5  29.9  -91.4   0.4408   1.8    9.0	GX 349+2                      
262.9812 -24.8674    4.7  38.7 -108.5   1.0463   2.4    7.5	GX 1+4                        
264.9228 -44.3841   51.6  35.8  -76.2  -0.0850  -0.2    8.7	4U 1735-44                    
263.0027 -33.7278    4.2  35.7  -94.7   1.0624   2.8    6.5	GX 354-0                      
259.5506   3.8937    2.7  53.9 -143.2   3.6802   4.2 ------	UNKNOWN

Plot creation:
Sun May 31 17:38:53 EDT 2015