GRB060714: 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: Wed Jan 22 15:05:02 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger219101
======================================================================

  Trigger: 00219101      Segment: 000

  BAT Trigger Time: 174582721.6   [s; MET]
      Trigger Stop: 174582725.696   [s; MET]
               UTC: 2006-07-14T15:12:00.283480    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 227.871787334663   Dec: -6.54624612869117  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.78
     Image Trigger?:     NO
     Rate S/N Ratio:     14.8660687473185  [ if not an image trigger ]
     Image S/N Ratio:    8.78

  Analysis Position:   [ source = BAT ]
    RA: 227.871787334663   Dec: -6.54624612869117  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 227.853819634806   Dec: -6.54336199501505  [deg; J2000]  
        { 15h 11m 24.9s , -06d 32' 36.1" }
         +/- 1.51269476727943 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.538302688362831 [arcmin] (formal 1-sigma fit error)
    SNR: 16.8395624176724
 
  Angular difference between the analysis and refined position is 1.084926 arcmin
 
  Partial Coding Fraction: 0.2734375    [ including projection effects ]

  Duration
     T90: 116.06400001049 +/- 8.96865499917084
        Measured from: -8.90799999237061
                   to: 107.15600001812     [s; relative to TRIGTIME]
     T50: 86.2159999907017 +/- 3.68572003649321
        Measured from: 4.37600001692772
                   to: 90.5920000076294     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 75.4399999976158     
                   to: 76.4399999976158     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -13.3400000035763     
                   to: 120.876000016928     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.798766   2.127178   1.105888   0.299296
           0.084546   0.085971   0.075446   0.065491 [error]
 Peak      0.040312   0.065842   0.049541   0.006503
           0.005568   0.005515   0.004794   0.003659 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100  134.216  -13.340  120.876
T90   116.064   -8.908  107.156
T50    86.216    4.376   90.592
Peak    1.000   75.440   76.440
 
 
====== 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      -1.895    -0.099      0.097       -           -               -         2.34e-03     -1.38e-04          1.37e-04      62.790   57
CPL     -1.538    -0.385      0.431       56.855     -13.492       -56.855      3.68e-03     -1.38e-03          2.65e-03      60.320   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      -1.482     -0.167     0.165       -           -               -         1.02e-02     -1.02e-03          1.02e-03      62.810   57
CPL     -0.651     -0.705     0.837       80.823     -19.809       150.858      2.68e-02     -1.48e-02          4.26e-02      58.670   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   5.80e-07  8.39e-07  9.03e-07  1.81e-06  2.88e-06  4.13e-06   erg/cm2
      90%_error_low -4.67e-08 -4.29e-08 -7.33e-08 -2.86e-07 -1.68e-07 -3.59e-07   erg/cm2
      90%_error_hi   4.77e-08  4.29e-08  7.38e-08  3.22e-07  1.69e-07  3.85e-07   erg/cm2
Peak flux       PL   4.12e-01  4.19e-01  3.00e-01  3.43e-01  1.27e+00  1.47e+00   ph/cm2/s
      90%_error_low -6.64e-02 -4.36e-02 -3.76e-02 -7.96e-02 -1.25e-01 -1.47e-01   ph/cm2/s
      90%_error_hi   6.97e-02  4.33e-02  3.73e-02  9.30e-02  1.25e-01  1.48e-01   ph/cm2/s
 
Fluence        CPL   5.56e-07  8.71e-07  8.95e-07  9.74e-07  2.77e-06  3.30e-06   erg/cm2
      90%_error_low -5.35e-08 -5.50e-08 -8.00e-08 -4.54e-07 -2.05e-07 -5.07e-07   erg/cm2
      90%_error_hi   5.41e-08  5.62e-08  7.83e-08  1.48e-06  2.07e-07  9.46e-07   erg/cm2
Peak flux      CPL   3.55e-01  4.51e-01  3.19e-01  1.49e-01  1.22e+00  1.27e+00   ph/cm2/s
      90%_error_low -8.09e-02 -5.23e-02 -4.30e-02 -7.45e-02 -1.31e-01 -1.56e-01   ph/cm2/s
      90%_error_hi   8.38e-02  5.40e-02  4.40e-02  1.51e-01  1.31e-01  1.90e-01   ph/cm2/s
 
======================================================================

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  227.8538    -6.5434   0.0114    33.5472    65.0443         2.3983270     16.840 TRIG_00219101                 
 
Foreground time interval of the image:
-13.340  34.901 (delta_t =  48.241 [sec])
Background time interval of the image:
-239.600 -13.340 (delta_t = 226.260 [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  -13.340 sec. to  120.876 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.89466     ( -0.098943   0.0972653 )
Norm@50keV  : 2.33505E-03    ( -0.000137942   0.000136656 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.79 using 59 PHA bins.
# Reduced chi-squared =          1.101 for     57 degrees of freedom 
# Null hypothesis probability =   2.787747e-01
 
Photon flux (15-150 keV)    in 134.2 sec: 0.334367 ( -0.017499  0.017522 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.88133e-06 ( -1.67686e-07  1.69183e-07 ) ergs/cm2
 

Cutoff power-law model

Time interval is from  -13.340 sec. to  120.876 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.53835     ( -0.384902   0.431425 )
Epeak [keV] : 56.8548      ( -13.493 -56.8561 )
Norm@50keV  : 3.67632E-03    ( -0.00138019   0.00265054 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.32 using 59 PHA bins.
# Reduced chi-squared =          1.077 for     56 degrees of freedom 
# Null hypothesis probability =   3.226030e-01
 
Photon flux (15-150 keV)    in 134.2 sec: 0.327826 ( -0.018861  0.018845 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.76887e-06 ( -2.05432e-07  2.06581e-07 ) ergs/cm2
 

1-s peak spectrum fit

Power-law model

Time interval is from   75.440 sec. to   76.440 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.48231     ( -0.166806   0.16454 )
Norm@50keV  : 1.01829E-02    ( -0.00102455   0.00101937 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.81 using 59 PHA bins.
# Reduced chi-squared =          1.102 for     57 degrees of freedom 
# Null hypothesis probability =   2.779305e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.26531 ( -0.12533  0.12548 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.68969e-08 ( -1.06586e-08  1.0762e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from   75.440 sec. to   76.440 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.651006     ( -0.704842   0.836626 )
Epeak [keV] : 80.8231      ( -19.8093 150.858 )
Norm@50keV  : 2.68040E-02    ( -0.0147666   0.0426238 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.67 using 59 PHA bins.
# Reduced chi-squared =          1.048 for     56 degrees of freedom 
# Null hypothesis probability =   3.777509e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.22175 ( -0.13103  0.1308 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.1283e-08 ( -6.31801e-09  1.18078e-08 ) ergs/cm2
 

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 116.064 sec.
Hardness ratio (energy fluence ratio) = 1.07579625001

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

S(15-50 keV)  = 1.4193604e-06
S(50-150 keV) = 1.4619636e-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 = 2.797615563035780E-01, IMY = -6.011639666073223E-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:
-239.600000 -13.340000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
225.3619  17.2483    2.2  38.5   24.6   1.2972   5.3 ------	UNKNOWN                       

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

Time interval of the image:
-13.340000 34.900590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
227.8538  -6.5434    0.7  33.5   65.0   2.3984  16.8 ------	UNKNOWN                       
176.4432 -55.4500    2.3  51.6  164.7   1.2395   5.0 ------	UNKNOWN                       
178.2693 -52.6057    2.6  48.6  164.7   0.8465   4.5 ------	UNKNOWN                       
204.1151  49.9200    2.6  56.4  -20.3   1.2440   4.4 ------	UNKNOWN                       

Post-slew image of 15-350 keV band

Time interval of the image:
88.100620 962.440000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9819 -15.6379    0.1  19.1   99.1  62.5354  82.2    0.2	Sco X-1                       
254.3242  35.3441   12.3  48.7    8.1   1.6030   0.9    6.5	Her X-1                       
255.9935 -37.8412    0.7  40.4  124.1  45.6698  16.8    0.4	4U 1700-377                   
256.4384 -36.4171   71.1  39.7  122.1   0.3971   0.2    0.4	GX 349+2                      
263.1575 -24.8220   10.8  38.4  101.6  -2.7630  -1.1    9.3	GX 1+4                        
268.3650  -1.3173    6.7  40.7   63.6   5.5672   1.7    8.1	SW J1753.5-0127               
220.5041 -38.2514    2.8  32.4  170.0   3.4903   4.1 ------	UNKNOWN                       
228.5531 -21.7016    3.6  15.2  156.7   2.1629   3.2 ------	UNKNOWN                       
181.5428 -13.8175    3.1  46.1 -123.7  13.6490   3.7 ------	UNKNOWN