1 / 17

Calibration Strategy for XIS: Gain, CTE, Quantum Efficiency, and Absolute Timing

This document outlines the calibration strategy for the X-ray Imaging Spectrometer (XIS) developed by Hironori Matsumoto at Kyoto University. It details the goals for Gain, Charge Transfer Efficiency (CTE), Quantum Efficiency (QE), and Absolute Timing for various celestial targets, including Perseus, Crab, and 3C273. The calibration aims for minimal error margins and maximum efficiency in observing these targets. A systematic approach includes cross-calibration efforts with other instruments and protocols to ensure accurate measurements and data quality.

sukey
Télécharger la présentation

Calibration Strategy for XIS: Gain, CTE, Quantum Efficiency, and Absolute Timing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. XIS flight calibration Hironori Matsumoto (Kyoto Univ.)

  2. Items • Gain, CTE • Quantum efficiency • Absolute timing • Cross cal. with XRS & HXD • OBF • Other items

  3. Gain, CTE Goal: Line center 0.1% (@90%error) • Target: Perseus • Because Cas A is not available just after the launch. However, Perseus can be observed before 3/18/2005. Thus, Perseus will be the first light!

  4. Pointing Y X Perseus ?ks exposure at each position

  5. Total Pointings XIS0&3 XIS1&2 12 pointings x ?ks x 2(Normal & Psum)= ? ks

  6. Quantum Efficiency Goal : Q.E. at 10 keV 4%@90% error (= depletion layer5.3%) ASTRO-E1: The relative difference of Q.E. between each segment is 4% at E=10 keV. • Systematic error (90% error) • Typical AGN: =1.700.01 • Typical C.G.: kT=5.000.07keV

  7. Strategy for the Q.E. calibration • Determine the absolute Q.E. of a reference segment with Crab. • Determine the relative Q.E. of the other segements with ???

  8. Absolute Q.E. 4‘ x Observe Crab at a 4’ offset position for 2.0 ks with the burst mode (0.2s). Reference segment

  9. Relative Q.E. ??? 10’ offset ??? ks x ??? 4’ offset ???ks

  10. Combined with the Gain Cal. ??? ???ks ??? ???ks ??? ???ks Crab 2ks Total: 10ksx2+???ksx2+?ksx6+?ks=???ks

  11. Q.E. for P-sum/timing • Target: 3C273 • Since 3C273 is a variable source: • XIS0&1 P-sum, XIS2&3 Burst(2s) • XIS0&1 Burst(2s), XIS2&3 P-sum 4 pointings x 3.5ks x 2 = 28 ks There may be other targets better than 3C273.

  12. Absolute Timing Target: Crab P-sum(256lines)/timing 1 ks x 1 pointings = 1 ks

  13. OBF • Target: Vega • 1 pointing x 10 ks = 10ks

  14. Cross Cal with XRS & HXD • XIS & XRS • Target: Cas A • 3ks x 1 pointing (?) • XIS & HXD • Target: Crab • 10ks x 1pointing (?)

  15. Other Items • Cross calibration with CXO and XMM. • G21.5-0.9 (CXO), 3C58 (XMM)? • Stability of the charge injection. • Cas A? • Alingment • Discuss with the XRT team.

  16. Summary Total: ??? ks + 

  17. Idea for ASTRO-E1

More Related