GRB100305A

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: Thu Jun 18 20:34:06 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger414905
======================================================================

  Trigger: 00414905      Segment: 000

  BAT Trigger Time: 289472744   [s; MET]
      Trigger Stop: 289472808   [s; MET]
               UTC: 2010-03-05T09:05:38.414420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 168.365441485924   Dec: 42.3762936166821  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.24
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.24

  Analysis Position:   [ source = BAT ]
    RA: 168.365441485924   Dec: 42.3762936166821  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 168.373879542398   Dec: 42.3795782774473  [deg; J2000]  
        { 11h 13m 29.7s , +42d 22' 46.5" }
         +/- 1.86225730687667 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.946470654814645 [arcmin] (formal 1-sigma fit error)
    SNR: 12.5125953104799
 
  Angular difference between the analysis and refined position is 0.422748 arcmin
 
  Partial Coding Fraction: 0.2265625    [ including projection effects ]

  Duration
     T90: 75.6159999966621 +/- 10.4010584354437
        Measured from: -0.695999979972839
                   to: 74.9200000166893     [s; relative to TRIGTIME]
     T50: 43.3280000090599 +/- 9.49842935155917
        Measured from: 20.8880000114441
                   to: 64.216000020504     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 62.716000020504     
                   to: 63.716000020504     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -9.17599999904633     
                   to: 78.1840000152588     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.653969   0.760085   0.758454   0.275019
           0.092035   0.097239   0.087550   0.078596 [error]
 Peak      0.035524   0.035760   0.028434   0.026608
           0.010293   0.011067   0.010029   0.008723 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100   87.360   -9.176   78.184
T90    75.616   -0.696   74.920
T50    43.328   20.888   64.216
Peak    1.000   62.716   63.716
 
 
====== 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      -1.349    -0.219      0.220       -           -               -         1.85e-03     -2.20e-04          2.20e-04      54.030   57
CPL     -1.345    -0.221      0.579     9999.330    -9999.330      -9999.330      1.85e-03     -1.85e-03          1.55e-03      54.040   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      -1.464     -0.502     0.488       -           -               -         7.06e-03     -2.18e-03          2.14e-03      57.880   57
CPL     -0.159     -1.712     6.019       66.448     -43.992       -66.448      3.47e-02     -3.47e-02          3.97e+01      57.060   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   1.79e-07  3.60e-07  5.66e-07  1.97e-06  1.58e-06  3.07e-06   erg/cm2
      90%_error_low -3.90e-08 -4.81e-08 -8.62e-08 -5.94e-07 -2.10e-07 -6.61e-07   erg/cm2
      90%_error_hi   4.14e-08  4.72e-08  8.48e-08  7.54e-07  2.11e-07  7.93e-07   erg/cm2
Peak flux       PL   2.80e-01  2.88e-01  2.09e-01  2.43e-01  8.73e-01  1.02e+00   ph/cm2/s
      90%_error_low -1.27e-01 -9.15e-02 -7.86e-02 -1.42e-01 -2.62e-01 -3.09e-01   ph/cm2/s
      90%_error_hi   1.42e-01  8.98e-02  7.74e-02  2.22e-01  2.63e-01  3.15e-01   ph/cm2/s
 
Fluence        CPL   1.82e-07  3.57e-07  5.61e-07  2.11e-06  1.58e-06  2.95e-06   erg/cm2
      90%_error_low    N/A    -5.36e-08 -9.60e-08 -1.25e-06 -2.54e-07 -1.01e-06   erg/cm2
      90%_error_hi     N/A     6.14e-08  1.07e-07  2.02e-07  2.41e-07  8.80e-07   erg/cm2
Peak flux      CPL   2.32e-01  3.32e-01  2.24e-01  6.60e-02  8.38e-01  8.53e-01   ph/cm2/s
      90%_error_low -2.32e-01 -1.11e-01     N/A   -6.60e-02 -2.86e-01 -3.01e-01   ph/cm2/s
      90%_error_hi   1.67e-01  1.42e-01     N/A    2.37e-01  2.73e-01  3.67e-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
  168.3739    42.3796   0.0154    34.4510   103.2848         2.2928482     12.513 TRIG_00414905                 
 
Foreground time interval of the image:
 -4.299  71.901 (delta_t =  76.200 [sec])
Background time interval of the image:

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   -9.176 sec. to   78.184 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.34886     ( -0.219353   0.220457 )
Norm@50keV  : 1.84672E-03    ( -0.000220495   0.000220136 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.03 using 59 PHA bins.
# Reduced chi-squared =         0.9478 for     57 degrees of freedom 
# Null hypothesis probability =   5.873868e-01
 
Photon flux (15-150 keV)    in 87.36 sec: 0.222428 ( -0.027291  0.027409 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.57628e-06 ( -2.09519e-07  2.11288e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -9.176 sec. to   78.184 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.34524     ( -0.220759   0.578724 )
Epeak [keV] : 9999.33      ( -9999.36 -9999.36 )
Norm@50keV  : 1.85110E-03    ( -0.00185385   0.00154854 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.04 using 59 PHA bins.
# Reduced chi-squared =         0.9649 for     56 degrees of freedom 
# Null hypothesis probability =   5.495823e-01
 
Photon flux (15-150 keV)    in 87.36 sec: 0.223731 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.58403e-06 ( -2.54393e-07  2.40844e-07 ) ergs/cm2

1-s peak spectrum fit

Power-law model

Time interval is from   62.716 sec. to   63.716 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.46351     ( -0.501993   0.488261 )
Norm@50keV  : 7.05764E-03    ( -0.0021751   0.00214471 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.88 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     57 degrees of freedom 
# Null hypothesis probability =   4.424711e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.872727 ( -0.2619  0.262513 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.73798e-08 ( -2.22316e-08  2.28313e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   62.716 sec. to   63.716 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.158987     ( -1.72438   6.00733 )
Epeak [keV] : 66.4485      ( -43.6614 -66.1177 )
Norm@50keV  : 3.46848E-02    ( -0.0356172   39.7427 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.06 using 59 PHA bins.
# Reduced chi-squared =          1.019 for     56 degrees of freedom 
# Null hypothesis probability =   4.355485e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.837724 ( -0.285598  0.273136 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.07379e-08 ( -2.40519e-08  2.61381e-08 ) ergs/cm2

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 75.616 sec.
Hardness ratio (energy fluence ratio) = 1.57043493314

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

S(15-50 keV)  = 5.392873e-07
S(50-150 keV) = 1.0369687e-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 = -1.576418676268291E-01, IMY = -6.676649840209761E-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:

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

Time interval of the image:
-4.299400 71.900600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4156  35.4385    6.4  47.8   -3.5   0.3188   1.8    6.1	Her X-1                       
180.0470  35.6568    2.4  39.6   86.6   1.6610   4.8 ------	UNKNOWN                       
168.3738  42.3796    0.9  34.5  103.3   2.2930  12.5 ------	UNKNOWN                       
245.1637  29.5002    2.3  51.3    8.6   1.2496   5.1 ------	UNKNOWN                       
151.4617  77.7265    2.8  10.7 -166.0   0.3319   4.1 ------	UNKNOWN                       
266.8389  33.3700    2.6  53.0  -15.3   0.9293   4.5 ------	UNKNOWN                       
296.1453  61.0377    3.4  34.9  -57.1   0.4527   3.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
126.100600 267.100590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
172.4964   9.9516    2.4  32.6   78.5   1.0998   4.9 ------	UNKNOWN                       
124.8380  26.1046    2.3  39.0  165.6   0.9371   5.0 ------	UNKNOWN                       
105.8305  24.1061    3.0  54.1  177.3   1.6158   3.8 ------	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 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