1. Chandra Calibration Status  Highlights of the IACHEC Meeting  Updates to the LETG/HRC-S calibration  Continuous Clocking (CC) mode calibration

2. 2010 IACHEC Meeting in Woods Hole (April 12-15)  Attended by 45 scientists  Representatives from Chandra, XMM-Newton, Suzaku, IXO, Swift, Integral, RXTE, MAXI, Hinode, NuStar and GEMS.  9 paper are being prepared for A&A with IACHEC in the title. IACHEC Report: Cross-calibration with Clusters of Galaxies IACHEC Report: Cross-calibration with Blazars IACHEC Report: Cross-calibration with E0102-72 IACHEC Report: Cross-calibration with G21.5-09 IACHEC Report: Cross-calibration with White Dwarfs and Isolated Neutron Stars

3. XMM-Newton/Chandra Blazar Flux Comparison – Smith & Marshall

7. Cross-Calibration with Clusters of Galaxies Abell 2029 (z=0.0773, kT=8.0 keV)

8. 2010 IACHEC – Nevalainen & David 2-7 keV energy band

12. 2010 IACHEC - Plucinsky E0102-72

14. Recent Updates to the LETG/HRC-S Effective Area - CALDB 4.2.1

15. Relative adjustments to the LETG higher order efficiencies

16. ACIS Operating Modes 1. Timed event mode (TE) 2. Continuous Clocking Mode (CC) Telemetry Formats 1. Very faint (VF) 5 x 5 2. Faint (F) 3x3 3. Graded

17. ACIS CC Faint Mode Calibration ACIS Flight Grades

18. CC Faint Mode Calibration Comparison of TE and CC Flight Grade Distribution New SI Mode for CC observations telemeters all flight grades except 24, 107, 127, 214, 223, 248, 251 and 255

19. Order sorting plot for HETG/ACIS-S spectrum 3 column averaged trap map Single column trap maps are now being generated for CC-F mode data based on the AL-Ka line in the ECS data

20. HETG/ACIS-S observations of bright sources in CC-G Mode

21. Features near the Si-K edge in HETG/ACIS-S observations of bright sources in CC-G mode

22. New CC Mode Calibration Products  Single column trap maps for all BI chips to apply cti corrections to CC-F mode data.  QE tables for old CC SI_Mode and new CC SI_Mode (additional flight grades)  Method for applying cti-corrections to CC-G mode data.