Difference: ResearchJournalForJamilBatshoun (20 vs. 21)

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Research Journal: Jamil Batshoun

CTA simulations with gammapy

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Questions
  1. (Answered)July 2: In section 5 of the paper they talk about optimizing the analysis using pSCT data alone. I'm not sure where they got the significance for the full dataset described in Table 3 (page 9). The analysis was first optimized using 2.2 hours of concurrent VERITAS and pSCT, but there is at least 17.6 of ON/OFF obsersvations. Is the 8.6 significance derived from the 2.2 hours of data or from the 17.6 hours based on analysis optimized from the 2.2 hours?
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Questions
  1. (Answered during 7/6 meeting)July 2: In section 5 of the paper they talk about optimizing the analysis using pSCT data alone. I'm not sure where they got the significance for the full dataset described in Table 3 (page 9). The analysis was first optimized using 2.2 hours of concurrent VERITAS and pSCT, but there is at least 17.6 of ON/OFF obsersvations. Is the 8.6 significance derived from the 2.2 hours of data or from the 17.6 hours based on analysis optimized from the 2.2 hours?
 
  1. June 30: Does "ZEN_PNT" refer to the zenith angle?
  2. June 29: What does gti/GTI mean in the case of the HDU_TYPE/NAME?
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  1. What was done:
  2. Things left to do:
  3. Notes:
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July 6, 2021
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July 6, 2021
 
  1. What was done:
    1. Nevis VERITAS/CTA meeting at 4pm
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    1. Read DC-1 closeout document introduction and gps section
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    1. Read DC-1 closeout document introduction, gps, and gammapy section
 
  1. Things left to do:
    1. Put my slides on the twiki (requested by Reshmi)
  2. Notes:
    1. Noticed that fitsviewer and gammapy(the code is in cta.ipynb) can both display the information inside the obs & hdu index fits files.
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July 2, 2021
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    1. DC1 document notes that irf files for the cta 1dc are in a CALDB folder which I checked and confirmed. Also in that folder are the irf files that Massimo downloaded for me.
July 2, 2021
 
  1. What was done:
    1. Finished reading "Detection of the Crab Nebula with the 9.7m prototype Schwarzschild-Couder telescope".
  2. Things left to do:
  3. Notes:
    1. Reading: They used 17.6 hours of concurrent ON/OFF observations from the pSCT alone to optimize the analysis further. They were able to get a final significance of 7.3. This compares to 8.6 from the full dataset. I'm not sure what counts as the full dataset though.
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July 1, 2021
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July 1, 2021
 
  1. What was done:
    1. Started reading "Detection of the Crab Nebula with the 9.7m prototype Schwarzschild-Couder telescope".
  2. Things left to do:
    1. Finish reading paper and take notes.
  3. Notes:
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June 30, 2021
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June 30, 2021
 
  1. What was done:
    1. Took notes on the obs_index file
  2. Things left to do:
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      1. ZEN_PNT: assuming this is the zenith angle pointing direction but i'm not sure
  1. Questions:
    1. Does "ZEN_PNT" refer to the zenith angle?
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June 29, 2021
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June 29, 2021
 
  1. What was done:
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    1. Learned how to start fitsviewer-----> ./fv #must be inside fv5.5.2 directory
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    1. Learned how to start fitsviewer-----> ./fv #must be inside fv5.5.2 directory
 
    1. Took notes on what I saw in hdu_index
    2. Made a text file version of the fits file.
  1. Things left to do:
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      1. HDU_NAME possible values: EVENTS, GTI, EFFECTIVE AREA, ENERGY DISPERSION, POINT SPREAD FUNCTION, BACKGROUND
  1. Questions:
    1. What does gti/GTI mean in the case of the HDU_TYPE/NAME?
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June 28, 2021
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June 28, 2021
 
  1. What was done:
    1. Met with Massimo to copy cta files over to my directory and had ds9 set up to view fits files.
      1. Massimo sent me an email with a pdf of the CTA DC1 to read.
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    1. check index files using fitsviewer. Take notes on these.
  1. Notes:
    1. I'm not currently sure about how to start fitsviewer. I'm going to check the fitsviewer website for help.
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Week 4
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Week 4
 
  1. What was done:
    1. Completed tutorials:
      1. Overview overview.ipynb
        CTA with gammapy cta.ipynb
        3D map simulation simulate_3d.ipynb
        1D spectrum simulation spectrum_simulation.ipynb
        Point source sensitivity cta_sensitivity.ipynb
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    1. Complete exercises from the tutorials i've completed so far to practice what they covered.
    2. Will go through irf section of cta.ipynb again to take notes on the plots the code produces.
    3. Need to complete taking notes on the papers I have read/need to read so far.
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June 24, 2021
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June 24, 2021
 
  1. What was done today:
    1. Attended 1st half of today's session of the VERITAS summer meeting.
    2. Attended REU talk
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  1. Notes
    1. overview.ipynb exercise notes: my best guess is that i am supposed to use SphericalCircle from astropy.visualization.wcsaxes.
    2. ^^^Figured it out
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June 16, 2021
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June 16, 2021
 
  1. What was done today:
    1. read about fits, found the standard paper for fits
    2. read about the icrs, dec, and ra
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    1. Read up on background modeling.
    2. Understand what the classes of gammapy do
    3. get a better understanding of how the analysis (both high level and lower level gammapy api)
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June 17-18, 2021
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June 17-18, 2021
 
  1. What was done today:
    1. Went over again the analysis steps found in tutorial "analysis 1"
  2. Things left to do:
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    1. questions:
      1. what is the model-best-fit.yaml file for? what about the model-best-fit_covariance.dat file?
      2. is data really reduced?
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June 9, 2021
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June 9, 2021
 
  1. What was done today:
    1. Added gammapy resources to .myprofile file
    2. started working on gammapy tutorials
      1. code to start tutorials:
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        1. ssh jbatshoun@tehanu.nevis.columbia.edu -L 9888:localhost:9888

        2. module load gammapy/0.18
        3. gammapy_start
        4. jupyter notebook --no-browser --port=9888
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        1. ssh jbatshoun@tehanu.nevis.columbia.edu -L 9888:localhost:9888

        2. module load gammapy/0.18
        3. gammapy_start
        4. jupyter notebook --no-browser --port=9888
 
        1. copy & paste resulting link to chrome and use jupyter notebook normally
      1. COMPLETED: 1st gammapy tutorial analysis_1.ipynb
  1. Things left to do:
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    1. Useful commands
      1. To check where the "juypter notebook" command is being used from (i.e. gammapy vs python): which jupyter-notebook
    2. Made an error when executing "export $GAMMAPY_DATA". executed in jbatshoun directory and not datasets directory. Noticed in tutorial what should have been the real path and made corrections.
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June 9, 2021
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June 9, 2021
 
  1. What was done today:
  2. Things Left to do:
  3. Notes:
    1. aa5351-06: Is the IRF a good measure of telescope performance? what about the psf?
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June 8, 2021
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June 8, 2021
 
  1. Read through gammapy and cta explanation of IRFs
  2. Read gammapy overview
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  -- Massimo Capasso - 2021-06-27
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