GRB160714A: 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: Sun Jul 31 21:09:22 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger704310
======================================================================

  Trigger: 00704310      Segment: 000

  BAT Trigger Time: 490155572.096   [s; MET]
      Trigger Stop: 490155572.352   [s; MET]
               UTC: 2016-07-14T02:19:15.539440    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 234.461473411661   Dec: 63.8313767687476  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.24
     Image Trigger?:     NO
     Rate S/N Ratio:     9.38083151964686  [ if not an image trigger ]
     Image S/N Ratio:    7.24

  Analysis Position:   [ source = BAT ]
    RA: 234.461473411661   Dec: 63.8313767687476  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 234.482351419432   Dec: 63.8112802000743  [deg; J2000]  
        { 15h 37m 55.8s , +63d 48' 40.6" }
         +/- 2.71841149306122 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.45924180785661 [arcmin] (formal 1-sigma fit error)
    SNR: 7.28900247355528
 
  Angular difference between the analysis and refined position is 1.326408 arcmin
 
  Partial Coding Fraction: 0.3554688    [ including projection effects ]

  Duration
     T90: 0.347999930381775 +/- 0.112641013934414
        Measured from: 0.0360000133514404
                   to: 0.383999943733215     [s; relative to TRIGTIME]
     T50: 0.1839998960495 +/- 0.10399994483361
        Measured from: 0.0640000104904175
                   to: 0.247999906539917     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.284000039100647     
                   to: 0.715999960899353     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.0279999971389771     
                   to: 0.399999976158142     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.021852   0.040158   0.036318   0.014090
           0.007032   0.007774   0.007051   0.006078 [error]
 Peak      0.026689   0.046952   0.044913   0.014797
           0.010871   0.011640   0.010690   0.009730 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    0.372    0.028    0.400
T90     0.348    0.036    0.384
T50     0.184    0.064    0.248
Peak    1.000   -0.284    0.716
 
 
====== 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      -1.409    -0.365      0.367       -           -               -         1.91e-02     -4.11e-03          4.10e-03      62.190   57
CPL     -0.984    -2.140      1.835      129.088    -129.088      -129.088      3.05e-02     -1.52e-02          1.88e-01      61.920   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      -1.272     -0.448     0.469       -           -               -         9.26e-03     -2.38e-03          2.38e-03      66.470   57
CPL     -1.004      1.004     2.123      209.209    -209.209      -209.209      1.22e-02     -5.18e-03          7.82e-02      66.420   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   8.35e-09  1.62e-08  2.44e-08  7.97e-08  6.87e-08  1.29e-07   erg/cm2
      90%_error_low -3.05e-09 -3.93e-09 -6.36e-09 -3.68e-08 -1.57e-08 -4.27e-08   erg/cm2
      90%_error_hi   3.40e-09  3.83e-09  6.22e-09  5.29e-08  1.58e-08  5.52e-08   erg/cm2
Peak flux       PL   3.06e-01  3.53e-01  2.92e-01  4.07e-01  1.10e+00  1.36e+00   ph/cm2/s
      90%_error_low -1.43e-01 -1.13e-01 -8.48e-02 -2.20e-01 -3.00e-01 -3.51e-01   ph/cm2/s
      90%_error_hi   1.69e-01  1.09e-01  8.25e-02  2.98e-01  3.03e-01  3.55e-01   ph/cm2/s
 
Fluence        CPL   7.66e-09  1.69e-08  2.55e-08  4.62e-08  6.74e-08  9.63e-08   erg/cm2
      90%_error_low -3.72e-09 -4.35e-09 -7.09e-09 -3.77e-08 -1.67e-08 -4.21e-08   erg/cm2
      90%_error_hi   3.89e-09  4.71e-09  7.57e-09  5.88e-08  1.64e-08  5.01e-08   erg/cm2
Peak flux      CPL   2.88e-01  3.58e-01  3.01e-01  3.26e-01  1.09e+00  1.28e+00   ph/cm2/s
      90%_error_low -1.80e-01 -1.17e-01 -9.07e-02 -3.26e-01 -3.11e-01 -4.44e-01   ph/cm2/s
      90%_error_hi   1.83e-01  1.21e-01  1.08e-01  3.63e-01  2.92e-01  4.30e-01   ph/cm2/s
 
======================================================================

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  234.4824    63.8113   0.0263    46.6227  -169.2402         0.1081446      7.289 TRIG_00704310                 
 
Foreground time interval of the image:
  0.028   0.400 (delta_t =   0.372 [sec])
Background time interval of the image:
-96.995   0.028 (delta_t =  97.023 [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    0.028 sec. to    0.400 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.40897     ( -0.364599   0.367222 )
Norm@50keV  : 1.91374E-02    ( -0.00410698   0.00410469 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.19 using 59 PHA bins.
# Reduced chi-squared =          1.091 for     57 degrees of freedom 
# Null hypothesis probability =   2.966126e-01
 
Photon flux (15-150 keV)    in 0.372 sec: 2.33541 ( -0.52616  0.52953 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.86727e-08 ( -1.56816e-08  1.57838e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from    0.028 sec. to    0.400 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.984432     ( -2.14028   1.83506 )
Epeak [keV] : 129.088      ( -129.088 -129.088 )
Norm@50keV  : 3.05324E-02    ( -0.0151834   0.187504 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.92 using 59 PHA bins.
# Reduced chi-squared =          1.106 for     56 degrees of freedom 
# Null hypothesis probability =   2.730717e-01
 
Photon flux (15-150 keV)    in 0.372 sec: 2.29853 ( -0.54326  0.54286 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.74317e-08 ( -1.67474e-08  1.63642e-08 ) ergs/cm2
 

1-s peak spectrum fit

Power-law model

Time interval is from   -0.284 sec. to    0.716 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.27189     ( -0.448256   0.46883 )
Norm@50keV  : 9.25717E-03    ( -0.00238492   0.00238001 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.47 using 59 PHA bins.
# Reduced chi-squared =          1.166 for     57 degrees of freedom 
# Null hypothesis probability =   1.830403e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.09890 ( -0.300212  0.30325 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.21319e-08 ( -2.48931e-08  2.50687e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from   -0.284 sec. to    0.716 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.00421     ( 1.04098   2.15976 )
Epeak [keV] : 209.209      ( -238.025 -238.025 )
Norm@50keV  : 1.21905E-02    ( -0.00477259   0.0786598 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.42 using 59 PHA bins.
# Reduced chi-squared =          1.186 for     56 degrees of freedom 
# Null hypothesis probability =   1.607897e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.08789 ( -0.311116  0.29229 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.57353e-08 ( 0  0 ) ergs/cm2
 

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 0.3479999 sec.
Hardness ratio (energy fluence ratio) = 1.50636458206

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

S(15-50 keV)  = 2.4564524e-08
S(50-150 keV) = 4.410875e-08

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 = -1.039703567893087E+00, IMY = 1.975775293542846E-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:
-96.995400 0.028000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6265  35.1757    1.1  38.0  117.3   3.4647  10.5    2.4	Cyg X-1                       
308.1880  40.9918    4.1  29.2  114.2   0.5174   2.8    4.2	Cyg X-3                       
326.1718  38.4939    4.4  23.8   84.9   0.4229   2.6   10.3	Cyg X-2                       
  7.4379   6.6818    2.1  54.9   18.1   3.3825   5.5  599.2	UNKNOWN                       
 27.4865  13.6642    2.2  54.9   -7.5   2.0286   5.2 ------	UNKNOWN                       
211.8336  72.9657    2.0  44.4 -152.3   1.2366   5.7 ------	UNKNOWN                       
 38.9397  24.4300    2.4  50.7  -26.0   1.3768   4.7 ------	UNKNOWN                       
 51.4065  30.5882    3.8  52.0  -42.1   1.8943   3.1 ------	UNKNOWN                       

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

Time interval of the image:
0.028000 0.400000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6665  35.1302    6.1  38.0  117.2  -0.0371  -1.9    5.7	Cyg X-1                       
307.9104  40.8898  206.4  29.4  114.4   0.0006   0.1    9.8	Cyg X-3                       
325.9493  38.2953    3.9  24.0   85.1   0.0280   3.0   10.6	Cyg X-2                       
  7.1182  23.9343    2.6  38.2   12.0   0.0447   4.5 ------	UNKNOWN                       
234.4824  63.8113    1.6  46.6 -169.2   0.1081   7.3 ------	UNKNOWN                       

Post-slew image of 15-350 keV band

Time interval of the image:
547.304610 809.004590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6301  22.0123    0.3  19.8  -75.8  10.6747  37.8    0.2	Crab                          
 96.1441   8.2445    2.4  36.0  -56.7   1.8163   4.9 ------	UNKNOWN                       
104.9429  69.5816    3.1  52.3 -149.1   3.2117   3.6 ------	UNKNOWN                       
101.4685 -16.4179    2.4  55.5  -34.0   6.1273   4.8 ------	UNKNOWN                       
104.2032  -1.5567    2.7  48.0  -50.7   4.6646   4.3 ------	UNKNOWN