Evaluation of the capabilities of the XMM-Newton SciSim from the EPIC calibration point-of-view. André Burzlaff, FH Aachen

Transcription

1 Evaluation of the capabilities of the XMM-Newton SciSim from the EPIC calibration point-of-view André Burzlaff, FH Aachen

2 Menu XMM-Newton and EPIC SciSim Test Results Conclusion Outlook

3 XMM Newton Launched 10th December 1999 with Ariane Flight hour high-eccentric orbit (HEO) - Apogee km - Perigee 7000 km - 40 inclination - Eccentricity 0.79 Europe s X-ray observatory EPIC: 3 independent CCD-cameras (2 MOS & 1 PN), observing simultaneously the same field 3 different light filters for both camera types different modes to accommodate brightness and timing RGS EPIC-MOS-Camera 2 EPIC-MOS-Camera 1 RGS-Camera 1 RGS-Camera 2 Optical Monitor EPIC-pn-Camera Mirrors

4 EPIC-pn and operating modes Full Frame/Ext. FF TimeR ms TimeRes: es:73,4/199 73,4/199m Large Window Small Timing Window Time Res: 48 ms Time Res: 6ms Burst Time Res: 7 µs Time Res: 0.03 ms

5 EPIC-MOS and operating modes Full Frame Time Res.: 2.6 s Large Window Small Window Time Res: Time Res.: 0.9 s central CCD 0.3 s central CCD 2.7 s outer CCDs 2.7 s outer CCDs Timing Time Res.: 1.8 ms central CCD 2.6 s outer CCDs

6 Reality

7 Simulation SciSim

8 The XMM-Newton Science Simulator Programmed before launch of XMM-Newton Capability to simulate all instruments (EPIC, RGS, OM) multiple sources with various energies and fluxes (manual input or catalogue data) cameras with filters in all modes SciSim Graphical User Interface

9 Tests EPIC-pn and EPIC MOS Monochromatic light Various Energies Various Rates Different CCD positions PSF Automatic runs by perl- and shell scripts Data processing with SciSim- CCFs and public CCFs

10 Example of monochromatic line at 6 kev Input data: x-ray flux photons/cm²/s background flux photons/cm²/s integration time 4000s input energy from 0.5 kev to 10 kev in steps of 0.5 kev EPIC-pn and MOS with SciSim CCFs Input energy

11 Example of monochromatic line at 6 kev Input data: x-ray flux photons/cm²/s background flux photons/cm²/s integration time 4000s input energy from 0.5 kev to 10 kev in steps of 0.5 kev EPIC-pn and MOS with public CCFs Input energy

12 Results for various energies - SciSim CCF kev output over input energy with SciSim CCFs Output energy [kev] Input energy [kev] EPIC-pn EPIC MOS1 EPIC MOS2 Output = Input

13 Results for various energies public CCF Output energy [kev] kev output over input energy with public CCFs Question: is that a Gain or a CTI effect??? Input energy [kev] EPIC-pn EPIC MOS1 EPIC MOS2 Output = Input

14 Results for various positions Input data: energy 6 kev background flux photons/cm²/s x-ray flux photons/cm²/s integration time 4000 s Check: Gain effect no change for different positions CTI effect energy should vary with position EPIC MOS EPIC-pn

15 Results for various positions - pn 6 kev at variable positions on CCD10 5 4,95 4,9 Offset gain effect EPIC-pn SciSim CCF EPIC-pn public CCF Output energy [kev] 4,85 4,8 4,75 4,7 4,65 4,6 4,55 slope CTI effect 4,5 0 0,05 0,1 0,15 0,2 0,25 Position [deg]

16 Results for various positions - MOS 6 kev at variable positions on CCD1 6,5 6 Output energy [kev] 5,5 5 4,5 4 3,5 3 center lowleft lowright upleft upright MOS1 SciSim CCF MOS1 public CCF MOS2 SciSim CCF MOS2 public CCF Position

17 Results for various rates Input data: background flux photons/cm²/s x-ray flux variabel from photons/cm²/s to photons/cm²/s integration time variabel from s to 500 s total counts = flux t int = const input energy 1.5 kev and 6 kev

18 Results for various rates- 1.5 kev Counts at variable rates and 1.5 kev EPIC-pn public CCF EPIC MOS1 public CCF Counts pn MOS EPIC MOS2 public CCF EPIC-pn SciSim CCF EPIC MOS1 SciSim CCF EPIC MOS2 SciSim CCF ,00E+00 1,00E-04 2,00E-04 3,00E-04 4,00E-04 5,00E-04 6,00E-04 7,00E-04 Rate [photons/cm_/s]

19 Results for various rates 6 kev Counts Counts at variable rates and 6 kev EPIC-pn public CCF EPIC MOS1 public CCF EPIC MOS2 pubic CCF EPIC-pn SciSim CCF EPIC MOS1 SciSim CCF EPIC MOS2 SciSim CCF ,00E+00 1,00E-04 2,00E-04 3,00E-04 4,00E-04 5,00E-04 6,00E-04 7,00E-04 Rate [photons/cm_/s]

20 Preliminary result for pn PSF Input data: 2 sources with radius of 1 arcmin energy 5 kev x-ray flux photons/cm²/s integration time s Orbit data SciSim data

21 Conclusions Gain MOS: ok SciSim CCF, public CCFs cause under correction of energy pn: not modelled correctly for both public and SciSim CCFs CTI MOS: ok for SciSim but not for public CCFs pn: effects not fully corrected in SciSim and public CCF Flux Total counts differences for different energies PSF one dimensional PSF implemented

22 Outlook Redistribution Contamination effects Pile-up effects on powerlaw sources Questions to be discussed with SciSim S/W team: What should SciSim produce using SciSim CCFs to process data? What should SciSim produce using public CCFs to process data?