Difference between revisions of "Analysis BLLac Oct 2022"

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(BL Lacertae flare Oct 2022)
 
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==Data-taking information==
 
==Data-taking information==
 
* '''Dates of data-taking''':  
 
* '''Dates of data-taking''':  
** 2022-10-20 ( h)
+
** overview
 +
*** https://docs.google.com/presentation/d/1tJyPyoCCOmWm1kS6j4ao_CmNMPDAIQqDWK7uRIpDNUA/edit?usp=sharing
 +
** 2022-10-20 (2.6 h)
 
***ZD: 16 - 42 deg
 
***ZD: 16 - 42 deg
 
***Transmission9km: n/a
 
***Transmission9km: n/a
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===DL2 data===
 
===DL2 data===
  
* lstchain v0.9
+
* lstchain v0.9.6
* tailcut 8-4 (with cleaning based on pedestal RMS)
+
* source-dependent
  
 
===Significance of the detection===
 
===Significance of the detection===
  
 
* 1 Off reflected position
 
* 1 Off reflected position
* alpha cut: 10 deg
+
* cut
 +
** intensity > 100
 +
** gammaness > 0.7
 +
** alpha < 10
  
* Number of ON events: 881
+
* statistics
* Number of OFF events: 616 +/- 25
+
** Number of ON events: 128864
* Excess: 265 +/- 39
+
** Number of OFF events: 113599
* Li&Ma significance: 6.9 sigma  
+
** Excess: 15265
 +
** Li&Ma significance: 31 sigma  
  
 
[[File:Alpha_BLLac_20221020_SNozaki.png|400px]]
 
[[File:Alpha_BLLac_20221020_SNozaki.png|400px]]
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===DL3 analysis===
 
===DL3 analysis===
  
*Science Tool: gammapy 0.20.1
+
*gammapy 0.20.1
*intensity > 30
+
*cut
*r: [0,  1 ]
+
**intensity > 0
*wl: [0.05, 1]
+
**r: [0,  1]
*leakage_intensity_width_2: [0, 0.2 ]
+
**wl: [0.01, 1]
*fixed_gh_cut: 0.7
+
** event_type = 32
*fixed_theta_cut: 0.2
+
**70% efficiency gammaness cut (min_gh_cut=0.1, max_gh_cut=0.95
 +
**70% efficiency gammaness cut (min_alpha_cut=1, min_alpha_cut=20)
  
 
+
* 2022-10-20 (SED)
* 2022-10-20
 
 
[[File:SED_BLLac_20221020_SNozaki.png|400px]]
 
[[File:SED_BLLac_20221020_SNozaki.png|400px]]
  
 +
* 2022-10-20 (LC)
 +
** > 100 GeV: (6.29 +/- 0.20) x 1E-10 / (cm2 s)
 
[[File:LC_BLLac_20221020_SNozaki.png|400px]]
 
[[File:LC_BLLac_20221020_SNozaki.png|400px]]
  
 +
==Fast analysis by Chaitanya Priyadarshi (source-independent analysis)==
  
 
+
https://www.lst1.iac.es/wiki/index.php/Analysis_BLLac_Oct_2022_w_IRF_interpolation_Priyadarshi
  
 
[[Data analysis | Back to the Data analysis page]]
 
[[Data analysis | Back to the Data analysis page]]

Latest revision as of 12:40, 28 October 2022

BL Lacertae flare Oct 2022[edit]

General information[edit]

  • Name of the source: BL Lacertae
  • Brief description of the source:
    • IBL / LBL
    • highly variable
    • z = 0.069
    • RA: 22 02 43.3 (hh mm ss), Dec: +42 16 40 (dd mm ss)
    • RA, Dec in deg (ICRS): 330.68038, 42.277772

Data-taking information[edit]

DL1 data[edit]

Standard run-wise data files produced by LSTOSA.

  • tailcut 8-4 (with cleaning based on pedestal RMS)
/fefs/aswg/data/real/DL1/20221020/v0.9/tailcut84/


Fast analysis by Seiya Nozaki (source-dependent analysis)[edit]

DL2 data[edit]

  • lstchain v0.9.6
  • source-dependent

Significance of the detection[edit]

  • 1 Off reflected position
  • cut
    • intensity > 100
    • gammaness > 0.7
    • alpha < 10
  • statistics
    • Number of ON events: 128864
    • Number of OFF events: 113599
    • Excess: 15265
    • Li&Ma significance: 31 sigma

Alpha BLLac 20221020 SNozaki.png

DL3 analysis[edit]

  • gammapy 0.20.1
  • cut
    • intensity > 0
    • r: [0, 1]
    • wl: [0.01, 1]
    • event_type = 32
    • 70% efficiency gammaness cut (min_gh_cut=0.1, max_gh_cut=0.95
    • 70% efficiency gammaness cut (min_alpha_cut=1, min_alpha_cut=20)
  • 2022-10-20 (SED)

SED BLLac 20221020 SNozaki.png

  • 2022-10-20 (LC)
    • > 100 GeV: (6.29 +/- 0.20) x 1E-10 / (cm2 s)

LC BLLac 20221020 SNozaki.png

Fast analysis by Chaitanya Priyadarshi (source-independent analysis)[edit]

https://www.lst1.iac.es/wiki/index.php/Analysis_BLLac_Oct_2022_w_IRF_interpolation_Priyadarshi

Back to the Data analysis page