GRB100719A: Summary Image Light curves Spectra Distribution Others

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: Fri Jan 17 17:29:47 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger429357
======================================================================

  Trigger: 00429357      Segment: 000

  BAT Trigger Time: 301203063.936   [s; MET]
      Trigger Stop: 301203068.032   [s; MET]
               UTC: 2010-07-19T03:30:57.937820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 112.263004490575   Dec: -5.83709688030733  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.27
     Image Trigger?:     NO
     Rate S/N Ratio:     7.41619848709566  [ if not an image trigger ]
     Image S/N Ratio:    7.27

  Analysis Position:   [ source = BAT ]
    RA: 112.263004490575   Dec: -5.83709688030733  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 112.296643002884   Dec: -5.85169785390543  [deg; J2000]  
        { 07h 29m 11.2s , -05d 51' 06.1" }
         +/- 2.01331047948414 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.823643275774901 [arcmin] (formal 1-sigma fit error)
    SNR: 11.1933519619408
 
  Angular difference between the analysis and refined position is 2.190621 arcmin
 
  Partial Coding Fraction: 0.5703125    [ including projection effects ]

  Duration
     T90: 36 +/- 9.21954445729289
        Measured from: -3.93599998950958
                   to: 32.0640000104904     [s; relative to TRIGTIME]
     T50: 13 +/- 8.24621125123532
        Measured from: 2.06400001049042
                   to: 15.0640000104904     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.06400001049042     
                   to: 3.06400001049042     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -3.93599998950958     
                   to: 35.0640000104904     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.280273   0.343629   0.202884   0.030671
           0.039059   0.040761   0.037457   0.034930 [error]
 Peak      0.018459   0.018685   0.028315   0.009818
           0.006447   0.006613   0.006271   0.005753 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100   39.000   -3.936   35.064
T90    36.000   -3.936   32.064
T50    13.000    2.064   15.064
Peak    1.000    2.064    3.064
 
 
====== 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      -1.676    -0.255      0.246       -           -               -         1.46e-03     -2.25e-04          2.19e-04      55.060   57
CPL     -1.682    -0.250      0.254     9999.360    -9999.350      -9999.360      1.46e-03     -2.22e-04          3.38e-03      55.070   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      -1.115     -0.488     0.514       -           -               -         4.96e-03     -1.33e-03          1.32e-03      57.850   57
CPL     -1.113     -0.488     0.522     9999.360    -9999.360      -9999.360      4.99e-03     -1.33e-03          1.01e-01      57.850   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   8.59e-08  1.42e-07  1.77e-07  4.41e-07  5.29e-07  8.46e-07   erg/cm2
      90%_error_low -1.75e-08 -1.89e-08 -3.70e-08 -1.64e-07 -8.53e-08 -2.04e-07   erg/cm2
      90%_error_hi   1.81e-08  1.88e-08  3.73e-08  2.21e-07  8.75e-08  2.51e-07   erg/cm2
Peak flux       PL   1.41e-01  1.79e-01  1.65e-01  2.67e-01  5.77e-01  7.53e-01   ph/cm2/s
      90%_error_low -6.96e-02 -6.00e-02 -5.11e-02 -1.43e-01 -1.58e-01 -2.11e-01   ph/cm2/s
      90%_error_hi   8.35e-02  5.73e-02  4.94e-02  2.24e-01  1.59e-01  2.27e-01   ph/cm2/s
 
Fluence        CPL   8.61e-08  1.41e-07  1.77e-07  4.51e-07  5.32e-07  8.06e-07   erg/cm2
      90%_error_low    N/A    -1.82e-08 -3.94e-08 -2.89e-07 -1.07e-07 -3.31e-07   erg/cm2
      90%_error_hi     N/A     1.26e-08  3.99e-08  2.25e-07  6.46e-08  2.80e-07   erg/cm2
Peak flux      CPL   1.42e-01  1.79e-01  1.65e-01  2.78e-01  5.78e-01  7.66e-01   ph/cm2/s
      90%_error_low -1.42e-01 -6.00e-02 -5.06e-02 -2.78e-01 -1.71e-01 -3.41e-01   ph/cm2/s
      90%_error_hi   8.29e-02  6.66e-02  6.69e-02  2.10e-01  1.59e-01  1.96e-01   ph/cm2/s
 
======================================================================

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  112.2966    -5.8517   0.0172    27.5053  -116.1263         0.9023928     11.193 TRIG_00429357                 
 
Foreground time interval of the image:
 -3.936  35.064 (delta_t =  39.000 [sec])
Background time interval of the image:
-239.936  -3.936 (delta_t = 236.000 [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

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   -3.936 sec. to   35.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.67637     ( -0.255331   0.245559 )
Norm@50keV  : 1.46103E-03    ( -0.00022523   0.000219257 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.06 using 59 PHA bins.
# Reduced chi-squared =         0.9660 for     57 degrees of freedom 
# Null hypothesis probability =   5.481231e-01
 
Photon flux (15-150 keV)    in 39 sec: 0.192475 ( -0.025622  0.025629 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.28696e-07 ( -8.5348e-08  8.74942e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from   -3.936 sec. to   35.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.68176     ( -0.252233   0.251396 )
Epeak [keV] : 9999.36      ( -9999.35 -9999.36 )
Norm@50keV  : 1.45833E-03    ( -0.000224904   0.0033752 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.07 using 59 PHA bins.
# Reduced chi-squared =         0.9833 for     56 degrees of freedom 
# Null hypothesis probability =   5.102307e-01
 
Photon flux (15-150 keV)    in 39 sec: 0.192977 ( -0.027281  0.025854 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.32015e-07 ( -1.06617e-07  6.46148e-08 ) ergs/cm2
 

1-s peak spectrum fit

Power-law model

Time interval is from    2.064 sec. to    3.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.11468     ( -0.488235   0.514402 )
Norm@50keV  : 4.96283E-03    ( -0.00132721   0.00132394 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.85 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     57 degrees of freedom 
# Null hypothesis probability =   4.436245e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.576500 ( -0.158142  0.159201 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.16523e-08 ( -1.51626e-08  1.54319e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from    2.064 sec. to    3.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.11323     ( -0.48941   0.520441 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 4.98748E-03    ( -0.0013267   0.101255 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.85 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     56 degrees of freedom 
# Null hypothesis probability =   4.067130e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.577630 ( -0.170748  0.158733 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.17595e-08 ( -1.69923e-08  1.36815e-08 ) ergs/cm2
 

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 36.0 sec.
Hardness ratio (energy fluence ratio) = 1.25152687189

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

S(15-50 keV)  = 2.2758392e-07
S(50-150 keV) = 3.011082e-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 = -2.292843605392753E-01, IMY = 4.674845188480318E-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:
-239.936000 -3.936000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5521 -40.5418    1.1  16.4  110.5   1.7774  10.2    1.3	Vela X-1                      
156.7062 -16.7741    2.5  22.8   11.0   0.7716   4.6 ------	UNKNOWN                       

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

Time interval of the image:
-3.936000 35.064000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5348 -40.6098    7.0  16.5  110.5   0.1187   1.7    3.3	Vela X-1                      
140.1885  -4.0199    2.6  21.1  -46.1   0.3052   4.5 ------	UNKNOWN                       
112.2966  -5.8517    1.0  27.5 -116.1   0.9026  11.2 ------	UNKNOWN                       

Post-slew image of 15-350 keV band

Time interval of the image:
417.564600 962.118100
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9806 -15.6325    0.6  39.4  147.2  15.1063  18.8    0.5	Sco X-1                       
254.4798  35.5447 1289.1  13.8  -60.4  -0.0029  -0.0   12.2	Her X-1                       
268.3781  -1.4037    5.9  25.8  101.9   0.8609   2.0    3.0	SW J1753.5-0127               
274.0118 -14.0431    9.3  39.6  102.3   1.6163   1.2    0.5	GX 17+2                       
288.8036  10.9340    1.5  32.2   53.3   4.0092   7.6    0.8	GRS 1915+105                  
299.5885  35.2178    1.1  39.3    9.2   4.9565  10.1    1.0	Cyg X-1                       
308.0790  40.9741    2.2  46.7    2.3   3.4569   5.3    1.9	Cyg X-3                       
221.4509 -19.6809    3.6  54.2  171.1   4.3695   3.3 ------	UNKNOWN                       
300.9560  63.7094    2.5  50.9  -28.1   3.5853   4.7 ------	UNKNOWN                       
253.2714  68.8828    4.1  47.0  -53.3   5.3673   2.9 ------	UNKNOWN                       
204.8649  23.4595    2.7  47.9 -129.0   7.3978   4.3 ------	UNKNOWN                       
203.2309  19.2219    2.8  50.3 -134.1   7.2676   4.1 ------	UNKNOWN