XRT Calibration Meeting 2023.

Topics from MSU

1. Status of the Data Base (KY)
   • CCD contamination layer thickness DB .
   • Roll angle DB .
   link to Keiji Yoshimura's presentation file
   
   
2. Results of the stray light measurements of 2023 eclipse season (AT)
   Results of the stray light measurements of 2023 eclipse season (AT)
   

   • "stray light" = "light leak"
   • Caused by a series of breaches developed on the surface of pre-filter.
   • Visible light component contaminated on X-ray images.
   • Measured using satellite's Day to Night transition (possible only during eclipse season only for limited pointing).
   • Effort by S. Saar to synthesize the stray light image at an arbitrary pointing.
   • Link to the page: stray light measurements of 2023 eclipse season .
     
     

3. Update of XRT response functions with Chianti DB ver.10.1. (RF)
   
   • CHIANTI version 10.1 was released in June 2023
   • New elemental abundance files were released.
     • sun_coronal_2021_chianti.abund
     • sun_photospheric_2021_asplund.abund
   link to Rhiannon Fleming's presentation file