GRB060413

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 17:34:16 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger205096
======================================================================

  Trigger: 00205096      Segment: 000

  BAT Trigger Time: 166646424   [s; MET]
      Trigger Stop: 166646488   [s; MET]
               UTC: 2006-04-13T18:40:22.869180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 291.299608710978   Dec: 13.807879439934  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.26
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.26

  Analysis Position:   [ source = BAT ]
    RA: 291.299608710978   Dec: 13.807879439934  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 291.292926282381   Dec: 13.7473285945198  [deg; J2000]  
        { 19h 25m 10.3s , +13d 44' 50.4" }
         +/- 1.91165478341018 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.688252182555294 [arcmin] (formal 1-sigma fit error)
    SNR: 12.0532691497615
 
  Angular difference between the analysis and refined position is 3.653861 arcmin
 
  Partial Coding Fraction: 1.03125    [ including projection effects ]

  Duration
     T90: 141.124000012875 +/- 20.5971195106687
        Measured from: 53.16400000453
                   to: 194.288000017405     [s; relative to TRIGTIME]
     T50: 37.3480000197887 +/- 3.18845732972999
        Measured from: 83.8240000009537
                   to: 121.172000020742     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 90.1599999964237     
                   to: 91.1599999964237     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 29.9760000109673     
                   to: 246.944000005722     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.044615   2.345358   1.608454   0.352370
           0.073645   0.073594   0.061361   0.049097 [error]
 Peak      0.042131   0.043144   0.027559   0.008898
           0.005185   0.005478   0.004516   0.003394 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100  216.968   29.976  246.944
T90   141.124   53.164  194.288
T50    37.348   83.824  121.172
Peak    1.000   90.160   91.160
 
 
====== 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      -1.662    -0.072      0.072       -           -               -         1.76e-03     -6.77e-05          6.75e-05      41.730   57
CPL     -1.528    -0.226      0.295      179.265     -89.914      -179.265      2.05e-03     -3.43e-04          7.86e-04      41.060   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      -1.743     -0.241     0.231       -           -               -         6.83e-03     -1.05e-03          1.02e-03      51.740   57
CPL     -1.575     -0.588     0.997      112.065     -68.664      -112.065      8.50e-03        N/A               N/A         51.630   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   5.69e-07  9.47e-07  1.20e-06  3.02e-06  3.56e-06  5.73e-06   erg/cm2
      90%_error_low -3.91e-08 -3.80e-08 -6.12e-08 -3.30e-07 -1.44e-07 -3.73e-07   erg/cm2
      90%_error_hi   4.01e-08  3.79e-08  6.11e-08  3.57e-07  1.44e-07  3.94e-07   erg/cm2
Peak flux       PL   3.55e-01  3.10e-01  1.85e-01  1.67e-01  9.22e-01  1.02e+00   ph/cm2/s
      90%_error_low -6.91e-02 -4.08e-02 -3.68e-02 -5.68e-02 -1.21e-01 -1.36e-01   ph/cm2/s
      90%_error_hi   7.16e-02  4.07e-02  3.69e-02  7.23e-02  1.21e-01  1.37e-01   ph/cm2/s
 
Fluence        CPL   5.54e-07  9.57e-07  1.21e-06  2.46e-06  3.52e-06  5.18e-06   erg/cm2
      90%_error_low -4.93e-08 -4.25e-08 -6.41e-08 -8.23e-07 -1.66e-07 -8.39e-07   erg/cm2
      90%_error_hi   4.62e-08  4.35e-08  6.48e-08  6.46e-07  1.65e-07  6.96e-07   erg/cm2
Peak flux      CPL   3.49e-01  3.16e-01  1.86e-01  1.30e-01  9.17e-01  9.82e-01   ph/cm2/s
      90%_error_low -7.69e-02 -4.66e-02 -3.73e-02 -1.30e-01 -1.24e-01 -1.64e-01   ph/cm2/s
      90%_error_hi   7.44e-02  5.47e-02  3.87e-02  7.88e-02  1.23e-01  1.68e-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
  291.2929    13.7473   0.0160     6.2665  -131.2762         1.0441791     12.053 TRIG_00205096                 
 
Foreground time interval of the image:
 29.976  74.901 (delta_t =  44.925 [sec])
Background time interval of the image:
 -5.699  29.976 (delta_t =  35.675 [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   29.976 sec. to  246.944 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.66246     ( -0.0723175   0.0718946 )
Norm@50keV  : 1.76374E-03    ( -6.77225e-05   6.74861e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.73 using 59 PHA bins.
# Reduced chi-squared =         0.7320 for     57 degrees of freedom 
# Null hypothesis probability =   9.356092e-01
 
Photon flux (15-150 keV)    in 217 sec: 0.231265 ( -0.009266  0.009308 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.55574e-06 ( -1.43656e-07  1.44158e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   29.976 sec. to  246.944 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.52827     ( -0.226226   0.294826 )
Epeak [keV] : 179.265      ( -89.9149 -179.266 )
Norm@50keV  : 2.05194E-03    ( -0.000343077   0.000786408 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.06 using 59 PHA bins.
# Reduced chi-squared =         0.7333 for     56 degrees of freedom 
# Null hypothesis probability =   9.327338e-01
 
Photon flux (15-150 keV)    in 217 sec: 0.229034 ( -0.010292  0.010318 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.51536e-06 ( -1.66321e-07  1.64744e-07 ) ergs/cm2

1-s peak spectrum fit

Power-law model

Time interval is from   90.160 sec. to   91.160 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.74258     ( -0.241428   0.23061 )
Norm@50keV  : 6.83390E-03    ( -0.00105164   0.00102479 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.74 using 59 PHA bins.
# Reduced chi-squared =         0.9077 for     57 degrees of freedom 
# Null hypothesis probability =   6.720645e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.921586 ( -0.121019  0.121034 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.30957e-08 ( -9.93386e-09  1.01361e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   90.160 sec. to   91.160 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.57456     ( -0.587395   0.997563 )
Epeak [keV] : 112.065      ( -68.9445 -112.345 )
Norm@50keV  : 8.49649E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.63 using 59 PHA bins.
# Reduced chi-squared =         0.9220 for     56 degrees of freedom 
# Null hypothesis probability =   6.408367e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.916672 ( -0.123802  0.122798 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.20283e-08 ( -1.13035e-08  1.09376e-08 ) ergs/cm2

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 141.124 sec.
Hardness ratio (energy fluence ratio) = 1.26363016139

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

S(15-50 keV)  = 1.5167558e-06
S(50-150 keV) = 2.0389601e-06

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 = -7.243973460855259E-02,

Spacecraft aspect plot

Bright

Pre-burst

 Time interval of the image: -5.699410 29.976000

# RAcent #  [deg] 254.6166  35.3589 263.1587 -24.8989 268.4731  -1.3029 270.2436 -25.2203 270.4661 -25.8845 274.0381 -14.0242 275.9255 -30.3674 285.0662 -25.0056 288.8299  10.9328 299.5919  35.1797 308.2558  40.9753 326.1127  38.3964 263.0997 -33.7744 283.2776 -46.7947

Pre-slew

 Time interval of the image: 29.976000 74.900600

# RAcent #  [deg] 254.3641  35.4589 263.0803 -24.8042 268.2020  -1.3229 270.2235 -25.0283 270.4656 -25.8811 274.0341 -14.0210 275.7774 -30.3037 284.9768 -25.0731 288.8861  10.9629 299.6414  35.2671 308.2786  41.0739 326.3106  38.2843 263.0413 -33.7939 270.1920  65.2799 291.2929  13.7469 296.6817  25.8005

Post-slew

 Time interval of the image: 101.500600 963.049800

# RAcent #  [deg] 254.5488  35.2283 263.0012 -24.8230 268.4379  -1.5204 270.1972 -25.0789 270.3632 -25.7914 273.9858 -13.9812 275.9878 -30.3676 285.1884 -25.0199 288.7964  10.9484 299.5981  35.1966 308.2158  40.9618 326.1676  38.3144 282.3914  26.4431 291.2877  13.7781 314.8942 -22.6095 304.6803  72.3542 332.6325  -1.2128

IMY = 8.252560554271778E-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] ['] 16.8 39.2 141.1 -0.0818 -0.7 7.8 Her X-1 9.8 41.2 38.0 0.1512 1.2 12.3 GX 1+4 19.5 21.1 65.3 -0.0384 -0.6 11.0 SW J1753.5-0127 11.8 38.1 29.2 0.0973 1.0 8.8 GX 5-1 3.9 38.6 28.4 0.2953 3.0 12.3 GRS 1758-258 3.0 26.5 33.1 0.2745 3.9 2.0 GX 17+2 191.9 41.0 18.8 0.0059 0.1 0.0 H1820-303 5.4 34.3 7.3 0.1544 2.2 5.4 HT1900.1-2455 0.9 2.6 -125.1 0.6999 12.4 2.0 GRS 1915+105 0.6 28.4 -153.2 1.1811 20.3 1.3 Cyg X-1 36.9 36.9 -148.2 0.0244 0.3 6.7 Cyg X-3 9.5 45.7 -131.6 -0.2133 -1.2 5.3 Cyg X-2 13.4 48.6 30.9 -0.1828 -0.9 6.6 GX 354-0 2.2 56.2 7.4 1.7997 5.3 ------ UNKNOWN background subtracted image of 15-350 keV band DECcent POSerr Theta Phi PeakCts SNR AngSep Name [deg] ['] [deg] [deg] ['] 8.5 39.5 141.1 -0.2651 -1.3 8.4 Her X-1 4.7 41.2 38.1 -0.5157 -2.4 5.2 GX 1+4 0.0 21.3 65.6 0.1228 1.1 12.6 SW J1753.5-0127 6.6 37.9 29.3 0.2861 1.7 4.5 GX 5-1 4.1 38.6 28.4 -0.4698 -2.8 12.1 GRS 1758-258 4.0 26.5 33.2 -0.3168 -2.9 1.9 GX 17+2 4.2 41.0 19.0 0.4380 2.7 8.5 H1820-303 8.3 34.4 7.4 -0.1689 -1.4 9.7 HT1900.1-2455 5.4 2.7 -124.8 -0.1957 -2.1 5.3 GRS 1915+105 33.6 28.5 -153.2 -0.0335 -0.3 4.7 Cyg X-1 0.0 37.0 -148.2 -0.2261 -1.8 10.5 Cyg X-3 9.2 45.8 -131.3 0.3563 1.3 6.9 Cyg X-2 7.0 48.6 31.0 0.5763 1.7 3.6 GX 354-0 2.5 57.2 176.3 2.4234 4.7 ------ UNKNOWN 0.9 6.3 -131.3 1.0523 12.2 ------ UNKNOWN 2.6 19.0 -147.2 0.3796 4.5 ------ UNKNOWN image of 15-350 keV band DECcent POSerr Theta Phi PeakCts SNR AngSep Name [deg] ['] [deg] [deg] ['] 12.3 39.4 138.7 -1.0830 -0.9 8.2 Her X-1 4.9 47.5 44.8 4.4087 2.3 4.7 GX 1+4 4.1 27.4 66.8 1.8588 2.8 5.8 SW J1753.5-0127 5.5 44.0 37.1 2.3177 2.1 4.7 GX 5-1 3.8 44.5 36.4 3.5798 3.1 4.4 GRS 1758-258 1.3 32.6 41.5 5.2570 8.8 3.5 GX 17+2 3.2 46.6 27.4 4.3835 3.6 3.3 H1820-303 3.6 39.3 17.9 2.2671 3.2 10.2 HT1900.1-2455 0.4 3.8 50.0 13.6233 29.3 0.2 GRS 1915+105 0.2 22.7 -153.1 26.1477 50.1 0.5 Cyg X-1 12.2 30.9 -145.6 0.5126 0.9 4.8 Cyg X-3 6.3 39.4 -125.9 1.7317 1.8 0.5 Cyg X-2 2.4 15.1 157.1 1.9145 4.8 ------ UNKNOWN 1.4 0.0 37.6 4.0435 8.0 ------ UNKNOWN 3.2 43.1 -23.6 2.7975 3.6 ------ UNKNOWN 4.1 59.1 -166.2 10.0977 2.9 ------ UNKNOWN 3.7 43.6 -64.1 8.8099 3.2 ------ 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