batgrbproduct analysis for trigger=1201696

batgrbproduct Analysis for Trigger=1201696

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 v2.48
    Process Start Time (local time): Tue Dec 26 15:28:49 EST 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1201696
======================================================================

  Trigger: 01201696      Segment: 000

  BAT Trigger Time: 723936577.024   [s; MET]
      Trigger Stop: 723936579.072   [s; MET]
               UTC: 2023-12-10T21:29:04.499760    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 95.7721784977718   Dec: -48.3592989761389  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.31
     Image Trigger?:     NO
     Rate S/N Ratio:     14.5258390463339  [ if not an image trigger ]
     Image S/N Ratio:    7.31

  Flight Position:   [ source = BAT ]
    RA: 95.7721784977718   Dec: -48.3592989761389  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 95.8029273090081   Dec: -48.33462905801  [deg; J2000]  
        { 06h 23m 12.7s , -48d 20' 04.7" }
         +/- 1.76124979931963 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.831462225112337 [arcmin] (formal 1-sigma fit error)
    SNR: 13.5501962366866
 
  Angular difference between Flight and Ground position is 1.922102 arcmin
 
  Partial Coding Fraction: 0.1757812    [ including projection effects ]

  Duration
     T90: 7.47200012207031 +/- 0.647950639186933
        Measured from: 0.00799989700317383
                   to: 7.48000001907349     [s; relative to TRIGTIME]
     T50: 4.04800009727478 +/- 0.892134507562476
        Measured from: 0.791999936103821
                   to: 4.8400000333786     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.236000061035156     
                   to: 0.763999938964844     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.23199999332428     
                   to: 7.81599998474121     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.355790   0.603001   0.723198   0.239182
           0.064681   0.074500   0.070092   0.065404 [error]
 Peak      0.098924   0.176927   0.149546   0.059458
           0.024763   0.028756   0.026426   0.023517 [error]

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

======================================================================
 
=== 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   Power-law 1.18e-07 2.81e-07 5.31e-07 2.44e-06 1.44e-06 3.37e-06   erg/cm2
              Error 2.60e-08 3.79e-08 6.61e-08 6.73e-07 1.73e-07 7.09e-07   erg/cm2
Peak flux Power-law 1.08e+00 1.24e+00 1.02e+00 1.40e+00 3.85e+00 4.74e+00   ph/cm2/s
              Error 3.38e-01 2.50e-01 2.06e-01 5.61e-01 7.05e-01 8.66e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.17e-08 3.02e-07 5.88e-07 7.80e-07 1.37e-06 1.76e-06   erg/cm2
              Error 3.23e-08 4.53e-08 8.31e-08 7.65e-07 1.86e-07 7.69e-07   erg/cm2
Peak flux Cutoff-PL 8.08e-01 1.55e+00 1.11e+00 2.07e-01 3.64e+00 3.67e+00   ph/cm2/s
              Error 4.14e-01 3.86e-01 2.84e-01 5.57e-01 7.45e-01 8.65e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.080    0.187    -      -           1.70e-02 1.93e-03   51.580 57
CPL   0.022    0.976     105.2  108.6      5.11e-02 6.42e-02   46.990 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.284    0.278    -      -           3.24e-02 5.75e-03   62.700 57
CPL  -0.820    2.411      62.2   83.3      4.30e-01 6.85e+00   59.140 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the 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 PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom

 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 5.248000 sec.
T50 in the 50-300 keV band: 3.072000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    8.048   -0.232    7.816
T90     7.472    0.008    7.480
T50     4.048    0.792    4.840
Peak    1.000   -0.236    0.764

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   95.8029   -48.3346   0.0142    40.3544   130.9056         2.2126246     13.550 TRIG_01201696                 
 
Foreground time interval of the image:
 -0.232   7.816 (delta_t =   8.048 [sec])
Background time interval of the image:
-60.024  -0.232 (delta_t =  59.792 [sec])

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
5) Time of each bin is in the middle of the bin.

1 s binning

From T0-310 s to T0+310 s

From T100_start - 20 s to T100_end + 30 s

Full time interval

64 ms binning

Full time interval

From T100_start to T100_end

From T0-5 sec to T0+5 sec

16 ms binning

From T100_start-5 s to T100_start+5 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

8 ms binning

From T100_start-3 s to T100_start+3 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

2 ms binning

From T100_start-1 s to T100_start+1 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Quad-rate summed light curves (from T0-300s to T0+1000s)

Spectral Evolution

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   -0.232 sec. to    7.816 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07991     ( -0.190344   0.184608 )
Norm@50keV  : 1.69820E-02    ( -0.00193414   0.00192939 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.58     using 59 bins.
 Reduced chi-squared = 0.904912
# Null hypothesis probability of 6.78e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 8.048 sec: 1.96615 ( -0.23036  0.23112 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.43836e-06 ( -1.727e-07  1.73537e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.232 sec. to    7.816 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.18736E-02     ( -1.09268   0.858706 )
Epeak [keV] : 105.238      ( -27.6574 189.557 )
Norm@50keV  : 5.10524E-02    ( -0.0297203   0.0985828 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   46.99     using 59 bins.
 Reduced chi-squared = 0.839107
# Null hypothesis probability of 7.99e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 8.048 sec: 1.88908 ( -0.24087  0.24026 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.36851e-06 ( -1.86831e-07  1.86055e-07 ) ergs/cm2

Band function

Time interval is from   -0.232 sec. to    7.816 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 20.2130  (-2.4825  3.03427)
R^2/D10^2   : 9.33159E-02  (-0.0345027   0.0508609)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.31     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.87e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.890e-08   1.267e-08
25- 50  2.954e-07   4.962e-08
50-150  8.961e-07   1.831e-07
15-150  1.250e-06   1.863e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-25.2834      -200)
Norm        : 8.17539       (-0.954468     0.954468)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   67.24     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.66e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.639e-07   9.134e-08
25- 50  3.152e-07   1.736e-07
50-150  6.914e-07   3.809e-07
15-150  1.171e-06   6.467e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.99431        (-5.82737      -8.11518)
R1^2/D10^2  : 0.592916        (-0.489908      106.287)
kT2 [keV]   : 24.9706        (-5.96415      -25.3231)
R2^2/D10^2  : 4.10316E-02    (-0.0380225   0.0698983)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.40     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.57e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.091e-08   5.424e-08
25- 50  2.993e-07   1.535e-07
50-150  9.637e-07   5.275e-07
15-150  1.354e-06   6.957e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.236 sec. to    0.764 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.28448     ( -0.282152   0.27385 )
Norm@50keV  : 3.23748E-02    ( -0.00575484   0.0057542 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.70     using 59 bins.
 Reduced chi-squared = 1.1
# Null hypothesis probability of 2.81e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 3.85166 ( -0.70426  0.70633 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.21181e-07 ( -6.13266e-08  6.18465e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.236 sec. to    0.764 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.820086     ( -2.897   1.92575 )
Epeak [keV] : 62.2049      ( -13.5005 153.115 )
Norm@50keV  : 0.429509    ( -0.444428   13.2521 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   59.14     using 59 bins.
 Reduced chi-squared = 1.05607
# Null hypothesis probability of 3.62e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 3.64194 ( -0.74146  0.74777 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.70377e-07 ( -6.58597e-08  7.92702e-08 ) ergs/cm2

Band function

Time interval is from   -0.236 sec. to    0.764 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.8668  (-2.34731  3.00266)
R^2/D10^2   : 0.509699  (-0.246776   0.422607)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   59.53     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.84e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.362e-08   7.950e-09
25- 50  9.308e-08   2.495e-08
50-150  1.394e-07   4.654e-08
15-150  2.561e-07   6.685e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-71.0002      -200)
Norm        : 16.1585       (-2.89232     2.89232)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.89     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.47e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.025e-08   2.337e-08
25- 50  7.743e-08   4.411e-08
50-150  1.698e-07   9.640e-08
15-150  2.875e-07   1.669e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 12.3685        (-2.32997      2.96937)
R1^2/D10^2  : 0.833594        (-0.403524      0.732424)
kT2 [keV]   : 199.363        (-199.363      -199.363)
R2^2/D10^2  : 3.42399E-04    (-0.000134445   0.00870171)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.72     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.24e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.746e-08   1.285e-08
25- 50  9.180e-08   5.174e-08
50-150  1.733e-07   7.049e-08
15-150  2.926e-07   1.239e-07

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07991     ( -0.190344   0.184608 )
Norm@50keV  : 1.69820E-02    ( -0.00193414   0.00192939 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.58     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.78e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 8.048 sec: 1.96611 ( -0.230187  0.231155 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.43822e-06 ( -1.72685e-07  1.73539e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.18713E-02     ( -1.09268   0.858707 )
Epeak [keV] : 105.238      ( -27.6574 189.557 )
Norm@50keV  : 5.10525E-02    ( -0.0297207   0.0985825 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   46.99     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.99e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 8.048 sec: 1.88905 ( -0.24086  0.24021 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.36915e-06 ( -1.86947e-07  1.86207e-07 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 2.81e-07
S(50-100 keV) = 5.31e-07

T90 vs. Hardness ratio plot

T90                                   = 7.47200012207031 sec.
Hardness ratio (energy fluence ratio) = 1.88968

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.69482
Count Ratio (50-100 keV) / (15-25 keV) = 2.03265

Mask shadow pattern

IMX = -5.563924175074301E-01, IMY = -6.421907002046583E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

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:
-60.024000 -0.232000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.2950 -60.7705    5.4  42.9 -163.3   1.0192   2.1    8.9	Cen X-3                       
186.4773 -62.8648    4.0  41.9 -151.7   1.3702   2.9    7.5	GX 301-2                      
  2.3069 -27.8225    2.8  47.9   16.6   2.1589   4.2 ------	UNKNOWN                       
336.4816 -34.5162    2.5  45.3  -15.0   1.7975   4.6 ------	UNKNOWN                       
314.2927 -42.7935    2.5  42.6  -42.5   2.5598   4.6 ------	UNKNOWN                       
271.3023 -57.4866    2.6  39.5  -89.5   4.7619   4.5 ------	UNKNOWN

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

Time interval of the image:
-0.232000 7.816000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.0480 -60.5454   11.2  43.1 -163.5   0.1045   1.0    9.2	Cen X-3                       
186.5873 -62.7760    7.2  42.0 -151.6   0.1573   1.6    1.9	GX 301-2                      
 95.8029 -48.3346    0.9  40.4  130.9   2.2127  13.6 ------	UNKNOWN                       
167.4290 -44.7867    2.3  58.4 -169.1   1.9142   5.0 ------	UNKNOWN                       
333.1368 -22.7047    2.6  57.4  -15.1   1.3371   4.5 ------	UNKNOWN                       
322.8812 -33.4091    2.5  49.4  -29.4   0.6956   4.7 ------	UNKNOWN                       
299.1133 -43.7757    2.3  45.6  -57.8   1.3094   5.0 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
108.676590 963.046000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5401 -40.3504    4.9  29.2 -163.3  -3.6834  -2.3   12.3	Vela X-1                      
170.0248 -60.6161    5.6  42.3 -116.9  11.7764   2.1    8.6	Cen X-3                       
 50.0398 -16.8541    2.4  48.7   41.8  14.5053   4.7 ------	UNKNOWN                       
 39.1273 -39.0541    2.6  41.0    9.0   9.7320   4.5 ------	UNKNOWN                       
163.9943 -25.2806    2.2  57.2 -160.1  35.6540   5.2 ------	UNKNOWN                       
355.9474 -57.6120    2.4  55.2  -32.3  40.9968   4.8 ------	UNKNOWN

Plot creation:
Tue Dec 26 16:58:49 EST 2023