batgrbproduct analysis for trigger=1221714

batgrbproduct Analysis for Trigger=1221714

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): Sat Oct 19 15:33:16 EDT 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1221714
======================================================================

  Trigger: 01221714      Segment: 000

  BAT Trigger Time: 734754069.696   [s; MET]
      Trigger Stop: 734754073.792   [s; MET]
               UTC: 2024-04-14T02:20:36.430320    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 184.786463994455   Dec: 56.7270365800049  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.42
     Image Trigger?:     NO
     Rate S/N Ratio:     13.6381816969859  [ if not an image trigger ]
     Image S/N Ratio:    9.42

  Flight Position:   [ source = BAT ]
    RA: 184.786463994455   Dec: 56.7270365800049  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 184.834290108256   Dec: 56.7303046109192  [deg; J2000]  
        { 12h 19m 20.2s , +56d 43' 49.1" }
         +/- 1.47504062565921 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.809056209619622 [arcmin] (formal 1-sigma fit error)
    SNR: 17.4570089469589
 
  Angular difference between Flight and Ground position is 1.586422 arcmin
 
  Partial Coding Fraction: 0.9140625    [ including projection effects ]

  Duration
     T90: 156.523999929428 +/- 170.215099926268
        Measured from: -36.2879999876022
                   to: 120.235999941826     [s; relative to TRIGTIME]
     T50: 39.8879998922348 +/- 5.27946964354756
        Measured from: -12.3199999332428
                   to: 27.567999958992     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.03999996185303     
                   to: 3.03999996185303     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -60.8880000114441     
                   to: 315.180000066757     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.316245   3.395370   2.487336   0.585263
           0.133885   0.143230   0.132751   0.132942 [error]
 Peak      0.044545   0.065828   0.071390   0.023755
           0.008254   0.008962   0.008539   0.008027 [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 7.00e-07 1.30e-06 1.86e-06 5.62e-06 5.32e-06 9.47e-06   erg/cm2
              Error 6.23e-08 6.87e-08 1.31e-07 8.65e-07 3.13e-07 9.64e-07   erg/cm2
Peak flux Power-law 3.20e-01 4.40e-01 4.48e-01 8.31e-01 1.47e+00 2.04e+00   ph/cm2/s
              Error 8.76e-02 7.32e-02 6.58e-02 2.68e-01 2.00e-01 3.09e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.63e-07 1.34e-06 1.88e-06 3.33e-06 5.13e-06 7.23e-06   erg/cm2
              Error 7.49e-08 8.40e-08 1.38e-07 1.97e-06 3.70e-07 2.02e-06   erg/cm2
Peak flux Cutoff-PL 2.99e-01 4.50e-01 4.63e-01 5.91e-01 1.46e+00 1.80e+00   ph/cm2/s
              Error 1.03e-01 8.10e-02 7.88e-02 3.00e-01 2.07e-01 4.36e-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    1.483    0.094    -      -           1.49e-03 7.81e-05   58.090 57
CPL   1.155    0.385     125.7  -40.4      2.19e-03 1.02e-03   55.860 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.974    0.236    -      -           1.28e-02 1.72e-03   64.270 57
CPL   0.674    0.788     241.2    0.0      1.77e-02 2.21e-02   63.950 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: 78.272000 sec.
T50 in the 50-300 keV band: 34.240000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  376.068  -60.888  315.180
T90   156.524  -36.288  120.236
T50    39.888  -12.320   27.568
Peak    1.000    2.040    3.040

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
  184.8343    56.7303   0.0110    12.3260   -91.4361         6.8157229     17.457 TRIG_01221714                 
 
Foreground time interval of the image:
-60.888 -21.288 (delta_t =  39.600 [sec])
-19.696  48.805 (delta_t =  68.501 [sec])
Background time interval of the image:
-239.696 -60.888 (delta_t = 178.808 [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 4.096000

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 4.096000

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 4.096000

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

Multiple GTIs in the spectrum
tstart tstop
-60.888000 -21.288200
-19.696000 315.180000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48296     ( -0.0938532   0.0944074 )
Norm@50keV  : 1.48796E-03    ( -7.82628e-05   7.79721e-05 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.09     using 59 bins.
 Reduced chi-squared = 1.01912
# Null hypothesis probability of 4.35e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 374.5 sec: 0.184923 ( -0.009496  0.009504 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.30202e-06 ( -3.11432e-07  3.1404e-07 ) ergs/cm2

Cutoff power-law model

Multiple GTIs in the spectrum
tstart tstop
-60.888000 -21.288200
-19.696000 315.180000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.15454     ( -0.408842   0.360968 )
Epeak [keV] : 125.675      ( -44.801 -125.678 )
Norm@50keV  : 2.18885E-03    ( -0.000730609   0.00131528 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.86     using 59 bins.
 Reduced chi-squared = 0.9975
# Null hypothesis probability of 4.80e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 374.5 sec: 0.181359 ( -0.010326  0.010294 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.12593e-06 ( -3.69494e-07  3.70386e-07 ) ergs/cm2

Band function

Multiple GTIs in the spectrum
tstart tstop
-60.888000 -21.288200
-19.696000 315.180000
 
 
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]    : 14.6355  (  )
R^2/D10^2   : 2.23904E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  124.61     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.96e-07 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.775e-07   3.515e-08
25- 50  1.466e-06   9.344e-08
50-150  2.113e-06   2.296e-07
15-150  3.956e-06   2.550e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-31.5066      -200)
Norm        : 0.754080       (-0.038     0.038)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.24     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.66e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.034e-07   3.820e-08
25- 50  1.353e-06   8.351e-08
50-150  2.968e-06   5.694e-07
15-150  5.024e-06   6.011e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.82647        (-1.40942      1.68628)
R1^2/D10^2  : 0.190319        (-0.0927767      0.228889)
kT2 [keV]   : 24.2558        (-4.07812      7.77025)
R2^2/D10^2  : 3.08573E-03    (-0.00193449   0.00307731)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.59     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.45e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.395e-07   1.356e-07
25- 50  1.347e-06   2.331e-07
50-150  3.037e-06   7.198e-07
15-150  5.024e-06   1.070e-06

Peak spectrum fit

Power-law model

Time interval is from    2.040 sec. to    3.040 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.974349     ( -0.241142   0.23063 )
Norm@50keV  : 1.28209E-02    ( -0.00172361   0.00171851 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   64.27     using 59 bins.
 Reduced chi-squared = 1.12754
# Null hypothesis probability of 2.37e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.47427 ( -0.20013  0.20052 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.39936e-07 ( -2.06306e-08  2.08433e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    2.040 sec. to    3.040 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.673542     ( -1.07327   0.5037 )
Epeak [keV] : 241.248      ( -241.255 -241.255 )
Norm@50keV  : 1.77408E-02    ( -0.00857384   0.0355997 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.95     using 59 bins.
 Reduced chi-squared = 1.14196
# Null hypothesis probability of 2.18e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.45701 ( -0.20763  0.20684 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.37079e-07 ( -2.28412e-08  2.24097e-08 ) ergs/cm2

Band function

Time interval is from    2.040 sec. to    3.040 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]    : 21.2539  (-3.57464  4.74558)
R^2/D10^2   : 5.86840E-02  (-0.0273344   0.0467873)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   71.83     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.92e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.982e-09   1.435e-09
25- 50  2.580e-08   5.705e-09
50-150  8.695e-08   2.373e-08
15-150  1.177e-07   2.834e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-32.8102      -200)
Norm        : 5.88375       (-0.824668     0.824668)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   79.82     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.47e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.465e-08   8.410e-09
25- 50  2.819e-08   1.586e-08
50-150  6.182e-08   3.458e-08
15-150  1.047e-07   5.925e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.78640        (-4.23246      8.21758)
R1^2/D10^2  : 0.501289        (-0.403641      3.51482)
kT2 [keV]   : 35.2741        (-12.6908      -35.4752)
R2^2/D10^2  : 1.03444E-02    (-0.00991804   0.034015)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.76     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.96e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.251e-09   5.290e-09
25- 50  2.711e-08   1.424e-08
50-150  1.017e-07   5.485e-08
15-150  1.381e-07   7.110e-08

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: 1.45386     ( -0.0723316   0.0724872 )
Norm@50keV  : 4.09508E-03    ( -0.000162955   0.000162672 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.11     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.31e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 108.1 sec: 0.505147 ( -0.0201777  0.0202006 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.2331e-06 ( -1.87868e-07  1.88929e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.12112     ( -0.307768   0.286617 )
Epeak [keV] : 130.958      ( -40.6426 409.385 )
Norm@50keV  : 6.02105E-03    ( -0.00166213   0.00251123 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.14     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.32e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 108.1 sec: 0.494942 ( -0.021914  0.021905 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.09682e-06 ( -2.22383e-07  2.22178e-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)  = 1.30e-06
S(50-100 keV) = 1.86e-06

T90 vs. Hardness ratio plot

T90                                   = 156.523999929428 sec.
Hardness ratio (energy fluence ratio) = 1.43077

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.46589
Count Ratio (50-100 keV) / (15-25 keV) = 1.07387

Mask shadow pattern

IMX = -5.476460409377755E-03, IMY = 2.184412084218914E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

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:
-239.696000 -60.888000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4196  35.3260   12.1  48.2    2.7   1.5318   1.0    2.1	Her X-1                       
143.5430  18.5700    2.6  47.2  176.2   6.3330   4.4 ------	UNKNOWN                       
270.6499  38.8631    2.3  57.2   -9.9  27.0403   5.1 ------	UNKNOWN

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

Time interval of the image:
-60.888000 -21.288200
-19.696000 48.804590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4651  35.2408   14.4  48.3    2.7  -0.6850  -0.8    6.1	Her X-1                       
189.9442  35.4065    2.5   9.6  109.1   1.5430   4.6 ------	UNKNOWN                       
184.8342  56.7304    0.7  12.3  -91.4   6.8170  17.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
91.604600 212.204600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.5901  35.3981   23.5  50.3   13.3   0.4181   0.5    7.3	Her X-1                       
161.5763  21.1432    2.8  39.5  144.8   2.6948   4.1 ------	UNKNOWN

Plot creation:
Sat Oct 19 18:31:15 EDT 2024