Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time: Sat Jan 11 22:47:52 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger573190
======================================================================

  Trigger: 00573190      Segment: 000

  BAT Trigger Time: 402615674.8   [s; MET]
      Trigger Stop: 402615674.864   [s; MET]
               UTC: 2013-10-04T21:41:03.688480    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 296.151463967544   Dec: -2.96000761369023  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.17
     Image Trigger?:     NO
     Rate S/N Ratio:     25.7293606605372  [ if not an image trigger ]
     Image S/N Ratio:    10.17

  Analysis Position:   [ source = BAT ]
    RA: 296.151463967544   Dec: -2.96000761369023  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 296.108143486919   Dec: -2.95169898499796  [deg; J2000]  
        { 19h 44m 26.0s , -02d 57' 06.1" }
         +/- 1.09377478658263 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.397901487930913 [arcmin] (formal 1-sigma fit error)
    SNR: 26.7612923824161
 
  Angular difference between the analysis and refined position is 2.643207 arcmin
 
  Partial Coding Fraction: 0.734375    [ including projection effects ]

  Duration
     T90: 1.53600001335144 +/- 0.326337243913619
        Measured from: -0.184000015258789
                   to: 1.35199999809265     [s; relative to TRIGTIME]
     T50: 0.51199996471405 +/- 0.0905096828275688
        Measured from: 0.00800001621246338
                   to: 0.519999980926514     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.26800000667572     
                   to: 0.73199999332428     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.248000025749207     
                   to: 1.80000001192093     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.166058   0.201325   0.110951   0.014493
           0.010369   0.010640   0.008919   0.006667 [error]
 Peak      0.122672   0.171885   0.099673   0.013350
           0.007931   0.008530   0.007006   0.004770 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    2.048   -0.248    1.800
T90     1.536   -0.184    1.352
T50     0.512    0.008    0.520
Peak    1.000   -0.268    0.732
 
 
====== 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      -1.805    -0.115      0.113       -           -               -         1.46e-02     -1.05e-03          1.04e-03      67.730   57
CPL     -1.231    -0.469      0.538       60.678     -12.126        64.776      3.01e-02     -1.31e-02          2.87e-02      63.250   56
 
 
=== 1-s peak 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      -1.702     -0.102     0.101       -           -               -         2.53e-02     -1.64e-03          1.63e-03      81.190   57
CPL     -0.852     -0.447     0.506       63.374      -9.489        21.163      7.18e-02     -2.98e-02          6.11e-02      69.540   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   5.10e-08  7.78e-08  8.90e-08  1.95e-07  2.76e-07  4.13e-07   erg/cm2
      90%_error_low -4.99e-09 -4.99e-09 -8.52e-09 -3.57e-08 -2.00e-08 -4.44e-08   erg/cm2
      90%_error_hi   5.11e-09  4.99e-09  8.56e-09  4.06e-08  2.02e-08  4.81e-08   erg/cm2
Peak flux       PL   1.27e+00  1.13e+00  6.95e-01  6.49e-01  3.37e+00  3.74e+00   ph/cm2/s
      90%_error_low -1.21e-01 -7.06e-02 -5.69e-02 -9.86e-02 -2.08e-01 -2.27e-01   ph/cm2/s
      90%_error_hi   1.23e-01  7.04e-02  5.67e-02  1.08e-01  2.08e-01  2.27e-01   ph/cm2/s
 
Fluence        CPL    N/A      N/A      N/A      N/A      N/A      N/A      erg/cm2
      90%_error_low -4.99e-09 -4.99e-09 -8.52e-09 -3.57e-08 -2.00e-08 -4.44e-08   erg/cm2
      90%_error_hi   5.11e-09  4.99e-09  8.56e-09  4.06e-08  2.02e-08  4.81e-08   erg/cm2
Peak flux      CPL   1.12e+00  1.24e+00  7.28e-01  2.64e-01  3.27e+00  3.35e+00   ph/cm2/s
      90%_error_low -1.42e-01 -9.01e-02 -6.48e-02 -9.89e-02 -2.15e-01 -2.40e-01   ph/cm2/s
      90%_error_hi   1.44e-01  9.25e-02  6.51e-02  1.50e-01  2.15e-01  2.53e-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
  296.1081    -2.9517   0.0071    20.9280   -74.2895         0.5256219     26.761 TRIG_00573190                 
 
Foreground time interval of the image:
 -0.248   1.800 (delta_t =   2.048 [sec])
Background time interval of the image:
-239.800  -0.248 (delta_t = 239.552 [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:




    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from   -0.248 sec. to    1.800 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.80518     ( -0.115307   0.112994 )
Norm@50keV  : 1.46266E-02    ( -0.00104532   0.00103521 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.73 using 59 PHA bins.
# Reduced chi-squared =          1.188 for     57 degrees of freedom 
# Null hypothesis probability =   1.562711e-01
 
Photon flux (15-150 keV)    in 2.048 sec: 2.01969 ( -0.13126  0.13138 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.75759e-07 ( -1.9983e-08  2.01647e-08 ) ergs/cm2
    Cutoff power-law model
    Time interval is from   -0.248 sec. to    1.800 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.23067     ( -0.469467   0.538403 )
Epeak [keV] : 60.6780      ( -12.126 64.7764 )
Norm@50keV  : 3.00793E-02    ( -0.0131428   0.0287025 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.25 using 59 PHA bins.
# Reduced chi-squared =          1.129 for     56 degrees of freedom 
# Null hypothesis probability =   2.357580e-01
 
Photon flux (15-150 keV)    in 2.048 sec: 1.97099 ( -0.13742  0.13718 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

    1-s peak spectrum fit

    Power-law model
    Time interval is from   -0.268 sec. to    0.732 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.70178     ( -0.102466   0.100997 )
Norm@50keV  : 2.53259E-02    ( -0.00164061   0.00163117 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.19 using 59 PHA bins.
# Reduced chi-squared =          1.424 for     57 degrees of freedom 
# Null hypothesis probability =   1.934430e-02
 
Photon flux (15-150 keV)    in 1 sec: 3.36579 ( -0.20792  0.2081 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.34488e-07 ( -1.58327e-08  1.59326e-08 ) ergs/cm2
    Cutoff power-law model
    Time interval is from   -0.268 sec. to    0.732 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.851597     ( -0.446728   0.506437 )
Epeak [keV] : 63.3739      ( -9.4893 21.1633 )
Norm@50keV  : 7.18192E-02    ( -0.0298188   0.061063 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.54 using 59 PHA bins.
# Reduced chi-squared =          1.242 for     56 degrees of freedom 
# Null hypothesis probability =   1.055964e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.26501 ( -0.21468  0.21461 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.20511e-07 ( -1.73735e-08  1.75016e-08 ) ergs/cm2

    Time-resolved spectra




    Distribution

    T90 vs. Hardness ratio plot 

    T90                                   = 1.536 sec.
Hardness ratio (energy fluence ratio) = 1.14459008605

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

    S(15-50 keV)  = 1.2877478e-07
S(50-150 keV) = 1.4698866e-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 = 1.035513442390058E-01, IMY = 3.681357784116517E-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:
-239.800000 -0.248000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
285.1395 -25.0538   16.0  36.4 -116.1  -0.2259  -0.7    9.8	HT1900.1-2455                 
288.7965  10.9710    1.1  32.4  -49.7   2.4964  11.0    1.5	GRS 1915+105                  
299.6895  35.2180    2.3  43.6  -10.4   1.3602   5.1    5.0	Cyg X-1                       
308.0930  40.9911    3.1  47.0    1.0   1.2147   3.8    2.4	Cyg X-3                       
326.3039  38.3729   10.0  44.5   20.6   0.3901   1.1    6.9	Cyg X-2                       
335.8663 -60.3777    4.6  56.9  179.2   3.2623   2.5 ------	UNKNOWN                       
291.8865  47.8651    3.0  57.5   -9.5   3.2433   3.9 ------	UNKNOWN                       
297.5492 -19.4153    2.5  23.6 -118.3   0.8537   4.7 ------	UNKNOWN                       
293.0792 -15.8992    2.3  25.7 -106.1   1.0907   5.1 ------	UNKNOWN

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

    Time interval of the image:
-0.248000 1.800000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
284.8869 -25.0199    8.2  36.5 -115.9  -0.0476  -1.4   10.1	HT1900.1-2455                 
288.7549  11.0470    4.2  32.5  -49.6   0.0611   2.8    6.6	GRS 1915+105                  
299.4308  35.2941    5.6  43.8  -10.6  -0.0517  -2.1    9.6	Cyg X-1                       
307.9653  40.9698    5.9  47.0    0.9   0.0653   2.0    6.7	Cyg X-3                       
326.1769  38.3311    4.4  44.4   20.5  -0.0837  -2.7    0.6	Cyg X-2                       
296.1082  -2.9517    0.4  20.9  -74.3   0.5255  26.8 ------	UNKNOWN

    Post-slew image of 15-350 keV band 

    Time interval of the image:
54.100600 962.275400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4795  35.5088    3.8  54.8  -35.7  -7.7444  -3.1   10.0	Her X-1                       
263.0096 -24.7159    3.6  38.7 -121.4   3.0488   3.2    1.8	GX 1+4                        
264.9105 -44.4798   10.2  49.8 -145.2  -1.6089  -1.1    7.4	4U 1735-44                    
268.4206  -1.3134    5.8  27.8  -81.4   1.3166   2.0    8.9	SW J1753.5-0127               
270.4398 -25.0715    9.0  33.2 -128.2   0.9007   1.3    8.5	GX 5-1                        
270.3044 -25.7701    3.2  33.7 -129.1   2.4862   3.6    1.6	GRS 1758-258                  
274.0319 -14.0458    3.0  24.5 -112.3   2.2031   3.8    1.6	GX 17+2                       
275.8939 -30.3689    4.3  33.5 -141.3   1.6292   2.7    1.6	H1820-303                     
285.1755 -24.7719    0.0  24.3 -149.2   0.6732   1.4   11.7	HT1900.1-2455                 
288.7936  10.9580    0.6  15.7  -21.9   9.5103  19.7    0.8	GRS 1915+105                  
299.6123  35.1988    1.0  38.3   10.4   7.8207  12.0    1.1	Cyg X-1                       
308.1024  40.9821    2.3  45.3   18.5   4.8443   5.0    1.8	Cyg X-3                       
326.0294  38.3853   20.9  49.7   36.6  -1.5222  -0.6    7.7	Cyg X-2                       
262.9991 -33.7704    4.8  43.7 -132.9   2.6760   2.4    3.9	GX 354-0                      
330.6182   9.8104    3.4  36.6   75.0   4.4252   3.4 ------	UNKNOWN                       
332.9271 -26.6415    3.5  42.4  133.4   5.4084   3.3 ------	UNKNOWN                       
312.6406 -39.2305    2.3  39.2  165.5   4.0839   5.1 ------	UNKNOWN                       
305.9855   0.3803    2.9  10.4   77.2   1.6693   4.0 ------	UNKNOWN                       
292.5562  46.6571    2.8  49.7    2.6   4.4986   4.2 ------	UNKNOWN                       
291.8105   5.3655    3.9   9.4  -21.8   1.3197   2.9 ------	UNKNOWN                       
298.0071 -56.3643    3.0  53.4 -175.4   5.6867   3.9 ------	UNKNOWN                       
	UNKNOWN                       
	UNKNOWN                       
	UNKNOWN