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XIS flight calibration

XIS flight calibration. Hironori Matsumoto (Kyoto Univ.). Items. Gain, CTE Quantum efficiency Absolute timing Cross cal. with XRS & HXD OBF Other items. Gain, CTE. Goal: Line center 0.1% (@90%error). Target: Perseus Because Cas A is not available just after the launch.

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XIS flight calibration

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  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

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