GRB041217

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: Mon Jun  1 23:12:50 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger100116
======================================================================

  Trigger: 00100116      Segment: 000

  BAT Trigger Time: 124961305.236   [s; MET]
      Trigger Stop: 124961315.236   [s; MET]
               UTC: 2004-12-17T07:28:25.236000    [includes UTCF correction] 
       WARNING: UTCFINIT is zero.  This is suspicious.
       Where From?: TDRSS position message

  BAT 
    RA: 164.79   Dec: -17.95  [deg; J2000]

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

  Analysis Position:   [ source = BAT ]
    RA: 164.79   Dec: -17.95  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 164.792943194028   Dec: -17.9404732733914  [deg; J2000]  
        { 10h 59m 10.3s , -17d 56' 25.7" }
         +/- 1.37474947163458 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.529223470437325 [arcmin] (formal 1-sigma fit error)
    SNR: 19.304392954457
 
  Angular difference between the analysis and refined position is 0.595781 arcmin
 
  Partial Coding Fraction: 0.296875    [ including projection effects ]

  Duration
     T90: 5.66800001263618 +/- 0.729712268822291
        Measured from: 1.18400000035763
                   to: 6.85200001299381     [s; relative to TRIGTIME]
     T50: 2.70000000298023 +/- 0.251205094905076
        Measured from: 2.31599999964237
                   to: 5.0160000026226     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 3.26000000536442     
                   to: 4.26000000536442     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.824000000953674     
                   to: 7.88799999654293     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.890922   1.531376   1.319831   0.285042
           0.044131   0.047727   0.045956   0.037884 [error]
 Peak      0.181500   0.277511   0.262938   0.066450
           0.017095   0.018708   0.018449   0.014361 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    7.064    0.824    7.888
T90     5.668    1.184    6.852
T50     2.700    2.316    5.016
Peak    1.000    3.260    4.260
 
 
====== 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: CPL)
 
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      -1.454    -0.064      0.064       -           -               -         4.17e-02     -1.54e-03          1.54e-03      73.180   57
CPL     -0.665    -0.291      0.311       91.194     -11.996        22.583      9.77e-02     -2.57e-02          3.77e-02      49.320   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      -1.416     -0.120     0.119       -           -               -         5.61e-02     -4.05e-03          4.05e-03      52.700   57
CPL     -0.830     -0.471     0.527      105.275     -27.752       187.923      1.08e-01     -4.34e-02          8.30e-02      48.060   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   3.60e-07  6.80e-07  9.93e-07  3.09e-06  2.81e-06  5.13e-06   erg/cm2
      90%_error_low -2.42e-08 -2.79e-08 -4.52e-08 -2.97e-07 -1.12e-07 -3.29e-07   erg/cm2
      90%_error_hi   2.47e-08  2.79e-08  4.51e-08  3.16e-07  1.12e-07  3.44e-07   erg/cm2
Peak flux       PL   2.13e+00  2.25e+00  1.69e+00  2.06e+00  6.86e+00  8.13e+00   ph/cm2/s
      90%_error_low -2.63e-01 -1.78e-01 -1.47e-01 -3.43e-01 -5.05e-01 -5.92e-01   ph/cm2/s
      90%_error_hi   2.73e-01  1.77e-01  1.46e-01  3.81e-01  5.05e-01  5.94e-01   ph/cm2/s
 
Fluence        CPL   3.02e-07  7.21e-07  1.06e-06  1.25e-06  2.69e-06  3.33e-06   erg/cm2
      90%_error_low -3.03e-08 -3.24e-08 -5.30e-08 -3.11e-07 -1.21e-07 -3.28e-07   erg/cm2
      90%_error_hi   3.10e-08  3.28e-08  5.36e-08  4.38e-07  1.21e-07  4.42e-07   erg/cm2
Peak flux      CPL   1.89e+00  2.37e+00  1.80e+00  1.16e+00  6.71e+00  7.22e+00   ph/cm2/s
      90%_error_low -3.20e-01 -2.04e-01 -1.73e-01 -4.15e-01 -5.19e-01 -6.85e-01   ph/cm2/s
      90%_error_hi   3.29e-01  2.08e-01  1.77e-01  6.79e-01  5.19e-01  8.21e-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
  164.7929   -17.9405   0.0099    42.1856   155.5775         2.9666614     19.304 TRIG_00100116                 
 
Foreground time interval of the image:
  0.824   7.888 (delta_t =   7.064 [sec])
Background time interval of the image:
 -2.236   0.824 (delta_t =   3.060 [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    0.824 sec. to    7.888 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.45446     ( -0.0641513   0.0639933 )
Norm@50keV  : 4.16571E-02    ( -0.00154395   0.00154362 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.18 using 59 PHA bins.
# Reduced chi-squared =          1.284 for     57 degrees of freedom 
# Null hypothesis probability =   7.315486e-02
 
Photon flux (15-150 keV)    in 7.064 sec: 5.13949 ( -0.20121  0.20159 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.81398e-06 ( -1.11635e-07  1.11861e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.824 sec. to    7.888 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.665129     ( -0.290507   0.31054 )
Epeak [keV] : 91.1938      ( -11.9965 22.5833 )
Norm@50keV  : 9.76520E-02    ( -0.0257198   0.0376971 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.32 using 59 PHA bins.
# Reduced chi-squared =         0.8807 for     56 degrees of freedom 
# Null hypothesis probability =   7.240066e-01
 
Photon flux (15-150 keV)    in 7.064 sec: 4.92336 ( -0.21357  0.21435 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.69297e-06 ( -1.21501e-07  1.214e-07 ) ergs/cm2

1-s peak spectrum fit

Power-law model

Time interval is from    3.260 sec. to    4.260 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.41557     ( -0.119694   0.119084 )
Norm@50keV  : 5.61311E-02    ( -0.00405293   0.00404767 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.70 using 59 PHA bins.
# Reduced chi-squared =         0.9246 for     57 degrees of freedom 
# Null hypothesis probability =   6.369916e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.86039 ( -0.5045  0.50516 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.40742e-07 ( -4.25577e-08  4.28106e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    3.260 sec. to    4.260 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.82991     ( -0.470887   0.527319 )
Epeak [keV] : 105.275      ( -27.7522 187.923 )
Norm@50keV  : 0.108141    ( -0.0434068   0.0829817 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.06 using 59 PHA bins.
# Reduced chi-squared =         0.8583 for     56 degrees of freedom 
# Null hypothesis probability =   7.656750e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.71145 ( -0.51899  0.51907 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.24735e-07 ( -4.51893e-08  4.51536e-08 ) ergs/cm2

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = N/A sec.
Hardness ratio (energy fluence ratio) = N/A

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

S(15-50 keV)  = N/A
S(50-150 keV) = N/A

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 = -8.251938405028332E-01, IMY = -3.747150187400978E-01

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:
-2.236000 0.824000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4701 -40.5812    4.3  28.7   99.6   0.1172   2.7    3.1	Vela X-1                      
170.0309 -60.5674    8.1   0.6  -32.6   0.0380   1.4    9.0	Cen X-3                       
186.5173 -62.7091    6.8   8.5  -81.5   0.0441   1.7    5.3	GX 301-2                      
164.7975 -17.9377    1.2  42.2  155.6   0.4920   9.3 ------	UNKNOWN                       
339.7814 -61.0607    2.6  58.7  -23.1   0.8094   4.5 ------	UNKNOWN                       
306.3635 -67.3430    2.2  48.8  -38.0   0.4093   5.3 ------	UNKNOWN

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

Time interval of the image:
0.824000 7.888000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5393 -40.5410  169.0  28.7   99.7   0.0084   0.1    1.0	Vela X-1                      
170.6961 -60.5227    0.0   0.7  -59.0   0.0237   0.3   12.7	Cen X-3                       
186.8942 -62.6735  132.8   8.6  -81.9   0.0064   0.1    8.7	GX 301-2                      
164.7929 -17.9405    0.6  42.2  155.6   2.9662  19.3 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:

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

Pre-burst image of 15-350 keV band

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

Post-slew image of 15-350 keV band

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