GRB060403

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: Wed Jan 22 17:40:27 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger203755
======================================================================

  Trigger: 00203755      Segment: 000

  BAT Trigger Time: 165762738.24   [s; MET]
      Trigger Stop: 165762739.264   [s; MET]
               UTC: 2006-04-03T13:12:17.129580    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 282.306272499452   Dec: 8.32978203469296  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.6
     Image Trigger?:     NO
     Rate S/N Ratio:     20.1246117974981  [ if not an image trigger ]
     Image S/N Ratio:    9.6

  Analysis Position:   [ source = BAT ]
    RA: 282.306272499452   Dec: 8.32978203469296  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 282.333447785968   Dec: 8.32846521857071  [deg; J2000]  
        { 18h 49m 20.0s , +08d 19' 42.5" }
         +/- 1.04859455311469 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.374597280607624 [arcmin] (formal 1-sigma fit error)
    SNR: 28.4235916402692
 
  Angular difference between the analysis and refined position is 1.615252 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 30.5879999995232 +/- 4.84125316037351
        Measured from: -4.06000000238419
                   to: 26.527999997139     [s; relative to TRIGTIME]
     T50: 14.1879999935627 +/- 1.80021887130349
        Measured from: 0.19200000166893
                   to: 14.3799999952316     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.80799999833107     
                   to: 2.80799999833107     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -6.16800001263618     
                   to: 33.1719999909401     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.341202   0.715541   0.681068   0.181609
           0.034532   0.035222   0.030494   0.025045 [error]
 Peak      0.014306   0.048049   0.053549   0.015797
           0.005537   0.005938   0.005411   0.004233 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100   39.340   -6.168   33.172
T90    30.588   -4.060   26.528
T50    14.188    0.192   14.380
Peak    1.000    1.808    2.808
 
 
====== Spectral Analysis Summary =====================================
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^{Ph_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 both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedo
 
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: PL)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      -1.052    -0.090      0.092       -           -               -         3.25e-03     -1.69e-04          1.69e-04      53.340   57
CPL     -0.693    -0.352      0.378      205.877     -77.300      2060.493      4.72e-03     -1.34e-03          2.17e-03      50.200   56
 
 
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: PL)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      -0.790     -0.210     0.222       -           -               -         8.27e-03     -1.13e-03          1.12e-03      67.910   57
CPL      0.542     -0.973     1.274      115.559     -29.167       135.978      2.96e-02     -1.76e-02          6.00e-02      61.960   56
 
 
=== 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         PL   1.07e-07  2.60e-07  5.02e-07  2.38e-06  1.36e-06  3.24e-06   erg/cm2
      90%_error_low -1.13e-08 -1.67e-08 -2.83e-08 -2.95e-07 -7.40e-08 -3.10e-07   erg/cm2
      90%_error_hi   1.17e-08  1.65e-08  2.82e-08  3.25e-07  7.42e-08  3.36e-07   erg/cm2
Peak flux       PL   1.73e-01  2.67e-01  3.09e-01  6.85e-01  9.51e-01  1.43e+00   ph/cm2/s
      90%_error_low -4.60e-02 -4.70e-02 -4.01e-02 -1.70e-01 -1.26e-01 -2.01e-01   ph/cm2/s
      90%_error_hi   5.13e-02  4.67e-02  4.00e-02  2.05e-01  1.27e-01  2.12e-01   ph/cm2/s
 
Fluence        CPL   9.85e-08  2.67e-07  5.20e-07  1.48e-06  1.33e-06  2.36e-06   erg/cm2
      90%_error_low -1.39e-08 -1.82e-08 -3.34e-08 -5.14e-07 -7.97e-08 -5.11e-07   erg/cm2
      90%_error_hi   1.43e-08  1.85e-08  3.37e-08  8.56e-07  7.92e-08  8.18e-07   erg/cm2
Peak flux      CPL   1.15e-01  2.75e-01  3.58e-01  2.61e-01  9.08e-01  1.01e+00   ph/cm2/s
      90%_error_low -5.24e-02 -5.60e-02 -5.32e-02 -1.21e-01 -1.30e-01 -1.80e-01   ph/cm2/s
      90%_error_hi   6.22e-02  5.50e-02  5.48e-02  2.45e-01  1.31e-01  2.63e-01   ph/cm2/s
 
======================================================================

Special notes of this burst

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  282.3334     8.3285   0.0067     4.5154    89.9173         1.4445643     28.424 TRIG_00203755                 
 
Foreground time interval of the image:
 -6.168  14.061 (delta_t =  20.229 [sec])
Background time interval of the image:
-239.240  -6.168 (delta_t = 233.072 [sec])

Light Curves

Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.

Full-time range; 1 s binning

Bokeh Plot

Other quick-look light curves:

64 ms binning (zoomed)
16 ms binning (zoomed)
8 ms binning (zoomed)
2 ms binning (zoomed)
SN=5 or 10 s binning (full-time range)
Raw light curve

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   -6.168 sec. to   33.172 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.05151     ( -0.089951   0.0916052 )
Norm@50keV  : 3.24730E-03    ( -0.000169014   0.000168649 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.34 using 59 PHA bins.
# Reduced chi-squared =         0.9357 for     57 degrees of freedom 
# Null hypothesis probability =   6.132866e-01
 
Photon flux (15-150 keV)    in 39.34 sec: 0.375094 ( -0.02016  0.020202 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.3572e-06 ( -7.40025e-08  7.42086e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -6.168 sec. to   33.172 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.693089     ( -0.352122   0.378324 )
Epeak [keV] : 205.877      ( -77.3008 2060.49 )
Norm@50keV  : 4.71591E-03    ( -0.00134366   0.00217095 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.20 using 59 PHA bins.
# Reduced chi-squared =         0.8964 for     56 degrees of freedom 
# Null hypothesis probability =   6.930908e-01
 
Photon flux (15-150 keV)    in 39.34 sec: 0.369087 ( -0.020964  0.020986 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.32998e-06 ( -7.96788e-08  7.91938e-08 ) ergs/cm2

1-s peak spectrum fit

Power-law model

Time interval is from    1.808 sec. to    2.808 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.790429     ( -0.209754   0.221996 )
Norm@50keV  : 8.27168E-03    ( -0.00113361   0.0011195 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.91 using 59 PHA bins.
# Reduced chi-squared =          1.191 for     57 degrees of freedom 
# Null hypothesis probability =   1.528125e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.951004 ( -0.126353  0.126996 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.70644e-08 ( -1.29423e-08  1.29957e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    1.808 sec. to    2.808 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.541877     ( -0.973112   1.27392 )
Epeak [keV] : 115.559      ( -29.1659 135.98 )
Norm@50keV  : 2.95673E-02    ( -0.0175646   0.059989 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.96 using 59 PHA bins.
# Reduced chi-squared =          1.106 for     56 degrees of freedom 
# Null hypothesis probability =   2.720980e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.907664 ( -0.129536  0.130546 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.24123e-08 ( -1.38598e-08  1.3789e-08 ) ergs/cm2

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 30.588 sec.
Hardness ratio (energy fluence ratio) = 1.92987780013

S(15-50 keV) vs. S(50-150 keV) plot

S(15-50 keV)  = 3.672854e-07
S(50-150 keV) = 9.899171e-07

The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.

Mask shadow pattern

 IMX = 1.140449292239489E-04,

Spacecraft aspect plot

Bright

Pre-burst

 Time interval of the image: -239.240000 -6.168000

# RAcent #  [deg] 254.4556  35.3766 263.0097 -24.7566 268.2689  -1.5076 270.2638 -25.0541 270.4527 -25.8189 273.9684 -13.8968 275.9865 -30.4141 285.1766 -24.9314 288.8155  10.9613 299.6080  35.2127 308.1098  40.9600 262.9551 -33.8267 252.2004  16.6758 250.1226  41.8034 293.1456  -3.1550 298.3009  17.1289 290.7843  68.2829 312.0076  65.9628

Pre-slew

 Time interval of the image: -6.168000 14.060580

# RAcent #  [deg] 254.5362  35.5462 263.0218 -24.7763 268.5338  -1.4980 270.2851 -25.1229 270.2466 -25.6967 273.8990 -14.1966 275.8308 -30.5165 285.0719 -25.0056 288.8165  10.9709 299.4030  35.2688 308.1314  41.0233 262.9858 -33.9669 260.3006  49.0753 282.3334   8.3285 296.0779 -26.5146 312.9743  43.8153

Post-slew

 Time interval of the image: 40.660600 274.660620

# RAcent #  [deg] 254.5064  35.2617 263.1503 -24.7296 268.2900  -1.5156 270.3485 -25.0676 270.1744 -25.5960 274.1634 -14.1353 275.9610 -30.3725 285.1218 -24.9455 288.7740  10.9408 299.5946  35.2037 308.0805  40.9092 262.8524 -33.8574 247.7490   9.3771 289.7773  49.8576 306.0013  59.6219 312.1862 -38.0610

IMY = -7.897123620050106E-02 source in the pre-burst/pre-slew/post-slew images

image of 15-350 keV band DECcent POSerr Theta Phi PeakCts SNR AngSep Name [deg] ['] [deg] [deg] ['] 66.0 39.3 148.6 -0.0677 -0.2 2.1 Her X-1 8.6 41.2 45.9 0.5880 1.3 0.7 GX 1+4 5.8 21.4 72.7 0.4436 2.0 6.8 SW J1753.5-0127 2.4 38.0 36.9 1.5310 4.8 1.9 GX 5-1 4.8 38.6 36.1 0.7649 2.4 9.3 GRS 1758-258 8.8 26.5 41.0 0.3284 1.3 8.7 GX 17+2 7.1 41.1 26.4 0.5928 1.6 4.3 H1820-303 7.1 34.3 14.7 0.4089 1.6 7.7 HT1900.1-2455 0.6 2.6 -117.8 3.8924 19.4 1.4 GRS 1915+105 0.5 28.4 -145.5 5.4371 23.7 1.1 Cyg X-1 41.7 36.8 -140.6 -0.0797 -0.3 0.4 Cyg X-3 282.1 48.7 38.6 0.0373 0.0 1.8 GX 354-0 3.2 34.5 118.1 1.4003 3.6 ------ UNKNOWN 2.2 45.7 153.7 2.5726 5.2 ------ UNKNOWN 2.3 14.0 -15.1 0.8766 5.0 ------ UNKNOWN 2.6 13.7 -114.0 0.8486 4.4 ------ UNKNOWN 3.0 59.0 -166.2 4.8624 3.9 ------ UNKNOWN 3.8 59.2 -156.2 4.6648 3.0 ------ UNKNOWN background subtracted image of 15-350 keV band DECcent POSerr Theta Phi PeakCts SNR AngSep Name [deg] ['] [deg] [deg] ['] 45.5 39.4 148.9 0.0248 0.3 12.8 Her X-1 5.1 41.2 45.8 -0.2776 -2.3 2.0 GX 1+4 23.6 21.2 72.3 -0.0302 -0.5 10.3 SW J1753.5-0127 11.9 38.0 36.8 -0.0866 -1.0 2.6 GX 5-1 5.9 38.5 36.4 -0.1760 -2.0 4.1 GRS 1758-258 0.0 26.8 40.8 -0.0507 -0.8 11.4 GX 17+2 0.0 41.2 26.5 0.1359 1.5 10.2 H1820-303 29.9 34.4 14.9 0.0253 0.4 5.5 HT1900.1-2455 93.8 2.6 -117.9 -0.0059 -0.1 1.9 GRS 1915+105 7.4 28.4 -145.9 0.0904 1.6 10.0 Cyg X-1 5.9 36.9 -140.7 0.1482 2.0 4.3 Cyg X-3 11.0 48.8 38.5 0.2545 1.1 7.9 GX 354-0 2.8 45.5 167.9 0.4299 4.2 ------ UNKNOWN 0.4 4.5 89.9 1.4447 28.4 ------ UNKNOWN 2.4 36.9 -1.8 0.3341 4.9 ------ UNKNOWN 2.2 41.3 -139.1 0.4710 5.2 ------ UNKNOWN image of 15-350 keV band DECcent POSerr Theta Phi PeakCts SNR AngSep Name [deg] ['] [deg] [deg] ['] 8.3 37.0 146.2 0.4821 1.4 5.4 Her X-1 20.9 38.0 34.4 0.1694 0.5 7.8 GX 1+4 3.2 17.1 60.9 0.7194 3.6 6.0 SW J1753.5-0127 2.4 35.4 24.3 1.2979 4.9 3.6 GX 5-1 3.7 35.9 24.3 0.8517 3.1 11.2 GRS 1758-258 6.5 23.9 25.3 -0.3514 -1.8 10.9 GX 17+2 8.9 39.2 14.1 0.3471 1.3 1.9 H1820-303 6.4 33.4 0.8 0.4365 1.8 4.9 HT1900.1-2455 0.6 6.9 -107.5 3.4512 19.0 1.5 GRS 1915+105 0.5 31.2 -146.6 5.0064 23.1 0.2 Cyg X-1 16.4 39.8 -143.7 0.2420 0.7 2.9 Cyg X-3 33.0 46.0 28.0 -0.1731 -0.3 6.9 GX 354-0 2.3 34.1 99.9 2.0200 5.0 ------ UNKNOWN 2.7 42.0 -167.4 1.2471 4.2 ------ UNKNOWN 2.9 54.3 -160.1 2.5520 4.0 ------ UNKNOWN 2.4 54.1 -23.6 2.8249 4.7 ------ UNKNOWN

Analysis Summary

Notes:

Image

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

Light Curves

Full-time range; 1 s binning

Other quick-look light curves:

64 ms binning (zoomed) 16 ms binning (zoomed) 8 ms binning (zoomed) 2 ms binning (zoomed) SN=5 or 10 s binning (full-time range) Raw light curve

Spectra

Notes:

Time averaged spectrum fit using the average DRM

Power-law model

Cutoff power-law model

1-s peak spectrum fit

Power-law model

Cutoff power-law model

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

S(15-50 keV) vs. S(50-150 keV) plot

Mask shadow pattern

Spacecraft aspect plot

Bright

64 ms binning (zoomed)
16 ms binning (zoomed)
8 ms binning (zoomed)
2 ms binning (zoomed)
SN=5 or 10 s binning (full-time range)
Raw light curve