The Suzaku/XIS: Status Report

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1 The Suzaku/XIS: Status Report Eric Miller MIT Kavli Institute for the Suzaku/XIS Team

2 Outline instrument health and status calibration status specific issues OBF contamination spacecraft and instrument anomalies gain and effective area tracking normal, window, burst, timing modes

"#$%&'(&)"#* 12#345&3624# 12#345&3#<'$=>"'2 1((#B>")#&63#6 M"K#&3#<'$=>"'2 +,-./&0&+,-.

3 Suzaku/XIS - Overview 4 CCDs with independent X-ray telescopes (XRTs) 3 front-illuminated (FI) XIS0 XIS2 XIS3 1 back-illuminated (BI) XIS1 &&&& & &!"#$%&'(&)"#* 12#345&3624# 12#345&3#<'$=>"'2 1((#B>")#&63#6 M"K#&3#<'$=>"'2 +,-./&0&+,-./ &:#;?+.7&#;&@A:#; CD7&E!FGHCI7&EJFG& BK 8 &@+-L:#;.&<&EN'3K6$G&9& &&&,-.&K<&EO<=KG from Tsujimoto s pocket guide

4 Major XIS Events July 10, 2005 launch of Suzaku August 13, 2005 November 9, 2006 January 30, 2008 June 23, 2009 December 18, 2009 XIS doors open, start of observations anomaly (μ-meteorite?) in XIS2; 2/3 of chip affected, stop using XIS2 CPU board malfunction in MPU; switch to redundant board anomaly (μ-meteorite?) in XIS0; 1/8 of chip affected, XIS0 safe for normal ops anomaly (μ-meteorite?) in XIS1; no CCD damage, likely hole in XIS1 OBF

5 XIS0 Anomaly - Frame Data charge injection on charge injection off (but sequencer still on)

6 XIS0 Anomaly - Summary apparent micro-meteorite causing charge leakage, saturation ~50 columns of XIS0 segment A unusable eliminated on-board with area discriminator burst mode is safe, but perhaps not useful in XIS0 P-Sum mode is no longer supported for XIS0 calibration changes minor at XIS aimpoint (seg B,C) gain change ~ few ev at 6 kev, no change at 1 kev no FWHM change most of XIS0 is usable, not in danger under supported modes

XIS1 Anomaly - Observations!! " " # $ RB-';AB- # $!""#$%!$%&'()*+,-.

leak no CCD damage grade selection removes most spurious events!""#$%!

7 XIS1 Anomaly - Observations!! " " # $ RB-';AB- # $!""#$%!$%&'()*+,-.'/)01%2 345$+46-7!""#$%!$%8'()*+,-.'9&:')4;-2 345$+46-7 [all grades]!"%"$"%$"<'(/64=+2,>?7-$+46-7 persistent bright spot hole in OBF from μ-meteorite; light leak no CCD damage grade selection removes most spurious events!""#$%!$%&'()*+,-.'/01')23-4!""#$%!$%&'(/01') $+27-8'9;"!=>1< 3?+@-7AB'CD'E-8+'F7G;8-'3?C-H +*;58#+*84#*<#4=5#82>67*>8#5;5)48"

8 XIS1 Anomaly - Issues calibration uncertainty increases at spot soft extended sources affected on-axis point sources unaffected no change in supported observing modes dark level increase if optically bright source at spot more stringent day-earth elevation limit (?) excessive dose of UV from bright Earth (?) OBF contaminant leaking through hole (?) observation of RXJ1856 on and off hole.

9 Gain and FWHM Tracking 55 Fe cal sources Mn Kα at 5.9 kev raw data, no CTI correction gain change with SCI on (% per yr) XIS ±0.001 XIS ±0.001 XIS ±0.001 FWHM change with SCI on (ev per yr) XIS ±0.5 XIS ±0.3 XIS ±0.4

10 Effective Area Tracking

11 Contamination Tracking lines are CALDB assumes C,O only NC/NO = 6 (more later)

12 Outline instrument health and status calibration status specific issues OBF contamination spacecraft and instrument anomalies gain and effective area tracking normal, window, burst, timing modes

13 XIS Observing Modes Clock modes + options (exposure time, exposure region, time resolution) Editing modes (event detection, event grades, telemetry format) Normal Full 8 s Window Burst 1-2 s > 0.1 s 5x5 3x3 2x2 P-Sum > 7.8 ms Timing

14 Normal Mode - Energy Scale XIS0 XIS1 XIS3 Mn Kα 5.9 kev 5 ev systematic deviation Text OVIII Kα 0.65 kev +15 ev deviation during last year CTI corrected with makepi parameters from

15 Window Mode updated xispi FTOOL, makepi CALDB ( ) improve energy scale vs. full window SCI-on: < 10 ev at Fe K (1/4 window) SCI-off: < 20 ev at Fe K (1/8 and 1/4 window) less than 10 ev. Perseus cluster - Fe line center XIS0 XIS1 XIS3 X%elapsed day since the launch Y: mesured central energy of the Fe line!"""!"#"$#"%&'$()#*$"$+,--$()'!.($/.!&$0#*)1$2"-,&$1*.,-!$3&$"$4&+&4&'5&$+.4$5./6"4)1.'7 #"""!"#"$#"%&'$()#*$"$89:$()'!.($/.!&$64.5&11&!$()#*$;)16) )'$*&"1.+# <=<=8$.4$3&+.4&$ /"%&6)>?@@A@A?B #"""!"#"$#"%&'$()#*$"$89:$()'!.($/.!&$64.5&11&!$()#*$;)16) )'$*&"1.+# <=<=?$.4$"+#&4$C$/"%&6)>?@@D@<8B

P-Sum + Timing Mode (XIS3) energy scale lower, FWHM broader than normal mode CTI correction not done, no charge injection 2006/8/25

16 P-Sum + Timing Mode (XIS3) energy scale lower, FWHM broader than normal mode CTI correction not done, no charge injection 2006/8/ /4/23 By Kohmura, Watanabe, Kawai (Kogakuin Univ.) Black: P-sum spectrum Red: best-fit spectrum for the normal mode E0102 in 128-row P-Sum

17 P-Sum + Timing Mode (XIS3) energy scale lower, FWHM broader than normal mode CTI correction not done, no charge injection 55Fe spectrum By Kohmura, Watanabe, Kawai (Kogakuin Univ.) E0102 in 128-row P-Sum

18 P-Sum + Timing Mode (XIS3) energy scale lower, FWHM broader than normal mode CTI correction not done, no charge injection 55Fe spectrum By Kohmura, Watanabe, Kawai (Kogakuin Univ.) P-Sum mode response files are soon to appear E0102 in 128-row P-Sum

19 2x2 Editing Mode - Gain 2008 Aug Feb Aug. 2x2 gain corrected by ev to equal 5x5 gain correction depends on energy and epoch before correction after makepi_ no practical differences in FWHM and detection efficiency between 5x5 and 2x2 XIS0, XIS3 similar; XIS1 is not operated in 2x2

20 Calibration Near Si Edge Tycho SNR powerlaw + Gaussian Si K line (center variable) line shift between FI, BI residuals of ~ 10% around Si K edge problem with detector Si fluorescence? another source? still under review X d CDXIS0 EDXIS1 5

21 Calibration Near Si Edge PKS Nov Mrk Apr XIS0+XIS3 XIS1 Mrk Jul Mrk May

22 Calibration Near Si Edge (CXO) extra Si edge in ACIS-I spectra of Abell 1689 E = 1.77 kev, = 0.12 Peng et al. 2009

23 OBF Contamination (On Axis) current CALDB assumes C,O only NC/NO = 6

24 OBF Contamination (On Axis) source of wiggles remains unknown

25 Contamination Composition Factor of 2 underestimate below 0.3keV Unable to improve the fit only with C & O No apparent edge found Absorption by Heavier Element Absorption by H (or He) but too much ~1021cm^2 Constant Factor (Grading Problem at low energy?) Tune C and O absorption only Include absorption by H

26 HCO Contaminant

27 HCO Contaminant contamination update forthcoming

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Suzaku XIS Contamination Status

Suzaku XIS Contamination Status Eric D. Miller (MIT) Bev LaMarr (MIT), M. Tsujimoto, K. Wada (ISAS/JAXA) IACHEC 2014 http://space.mit.edu/xis/monitor/contam Outline contamination history independent of