Difference between revisions of "Analysis BLLac Oct 2022"

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(→‎BL Lacertae flare July 2021)
(→‎BL Lacertae flare Oct 2022)
 
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** RA: 22 02 43.3 (hh mm ss), Dec: +42 16 40 (dd mm ss)
 
** RA: 22 02 43.3 (hh mm ss), Dec: +42 16 40 (dd mm ss)
 
** RA, Dec in deg (ICRS): 330.68038, 42.277772
 
** RA, Dec in deg (ICRS): 330.68038, 42.277772
−
 
−
* Analysis by Daniel Morcuende (UCM, Madrid - dmorcuen@ucm.es)
 
  
 
==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
 
***Runs: 9753, 9754, 9755, 9756, 9757, 9758, 9759, 9760, 9761
 
***Runs: 9753, 9754, 9755, 9756, 9757, 9758, 9759, 9760, 9761
 
***Joint observations with MAGIC
 
***Joint observations with MAGIC
 +
***https://www.lst1.iac.es/datacheck/observation_overview/2022/10/CameraDailyCheck20221020.pdf
  
−
 
+
==DL1 data==
−
==DL2 data==
 
 
Standard run-wise data files produced by LSTOSA.
 
Standard run-wise data files produced by LSTOSA.
−
 
−
* lstchain v0.9
 
 
* tailcut 8-4 (with cleaning based on pedestal RMS)
 
* tailcut 8-4 (with cleaning based on pedestal RMS)
  
 +
/fefs/aswg/data/real/DL1/20221020/v0.9/tailcut84/
  
−
==DL3 data selection==
 
−
 
−
*intensity > 30
 
−
*r: [0,  1 ]
 
−
*wl: [0.05, 1]
 
−
*leakage_intensity_width_2: [0, 0.2 ]
 
−
*fixed_gh_cut: 0.7
 
−
*fixed_theta_cut: 0.2
 
−
 
−
==High-level analysis==
 
−
 
−
*Science Tool: gammapy 0.18.2 (+ bugfix https://github.com/gammapy/gammapy/pull/3374)
 
−
 
−
==Significance of the detection==
 
−
 
−
1 Off reflected position
 
−
Theta2 cut: 0.04 deg
 
−
 
−
* Squares: Background
 
−
* Circles: Signal events
 
−
 
−
===Date: 2021-07-09===
 
−
* List of runs: [5219, 5220]
 
−
* Observation time: 0.41 h
 
−
* Number of ON events: 257
 
−
* Number of OFF events: 234 +/- 15
 
−
* Excess: 23 +/- 22
 
−
* Li&Ma significance: 1.0 sigma
 
−
 
−
[[File:Theta2_BLLac_2021-07-09_DMorcuende.png|500px]]
 
−
 
−
===Date: 2021-07-10===
 
−
* List of runs: [5229, 5230, 5231, 5232, 5233, 5234, 5235]
 
−
* Observation time: 1.56 h
 
−
* Number of ON events: 598
 
−
* Number of OFF events: 351 +/- 19
 
−
* Excess: 247 +/- 31
 
−
* Li&Ma significance: 8.1 sigma
 
−
 
−
[[File:Theta2_BLLac_2021-07-10_DMorcuende.png|500px]]
 
−
 
−
===Date: 2021-07-12===
 
−
* List of runs: [5251, 5252]
 
−
* Observation time: 0.49 h
 
−
* Number of ON events: 26
 
−
* Number of OFF events: 31 +/- 6
 
−
* Excess: -5 +/- 8
 
−
* Li&Ma significance: -0.7 sigma
 
−
 
−
[[File:Theta2_BLLac_2021-07-12_DMorcuende.png|500px]]
 
−
 
−
===Date: 2021-07-15===
 
−
 
−
 
−
[[File:Theta2_BLLac_2021-07-15_DMorcuende.png|500px]]
 
  
−
===Stacked===
 
−
* List of runs: [5219, 5220, 5229, 5230, 5231, 5232, 5233, 5234, 5235, 5251, 5252]
 
−
* Observation time: 2.46 h
 
−
* Number of ON events: 881
 
−
* Number of OFF events: 616 +/- 25
 
−
* Excess: 265 +/- 39
 
−
* Li&Ma significance: 6.9 sigma
 
  
−
[[File:Theta2_BLLac_Stacked_DMorcuende.png|500px]]
+
==Fast analysis by Seiya Nozaki (source-dependent analysis)==
  
−
==Spectral analysis==
+
===DL2 data===
  
−
Effective area
+
* lstchain v0.9.6
 +
* source-dependent
  
−
[[File:Aeff_BLLac.png|500px]]
+
===Significance of the detection===
  
 +
* 1 Off reflected position
 +
* cut
 +
** intensity > 100
 +
** gammaness > 0.7
 +
** alpha < 10
  
−
Migration Matrix and exposure
+
* statistics
 +
** Number of ON events: 128864
 +
** Number of OFF events: 113599
 +
** Excess: 15265
 +
** Li&Ma significance: 31 sigma
  
−
[[File:Migration_matrix_exposure_BLLac_2021-09-10.png|1500px]]
+
[[File:Alpha_BLLac_20221020_SNozaki.png|400px]]
  
 +
===DL3 analysis===
  
−
* 2021-07-10
+
*gammapy 0.20.1
−
[[File:SED_PWL_2021-07-10_DMorcuende.png|500px]]
+
*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)
  
−
* PowerLaw fit:
+
* 2022-10-20 (SED)
−
** index: 3.5 +/- 0.2
+
[[File:SED_BLLac_20221020_SNozaki.png|400px]]
−
** E_ref: 0.1 TeV
 
−
** amplitude: 1.3 +/- 0.2 10^-9 cm-2 s-1 TeV-1
 
  
−
[[File:Residuals_Excess_energy.png|600px]]
+
* 2022-10-20 (LC)
 +
** > 100 GeV: (6.29 +/- 0.20) x 1E-10 / (cm2 s)
 +
[[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

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