See http://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift Report L7028 Start at 2018:291:15:20 GMT = 11:20am October 18,2018 End at 2018:291:16:42 GMT = 12:42 pm October 18,2018 ACIS SOT Shift Report October 18, 2018 ACIS Personnel: Dick Edgar, John ZuHone, Gregg Germain, Paul Plucinsky PLAN -------- We ran CAP1467 to execute a 24 hour CTI measurement at an ACIS focal plane temperature of -110 C during the recovery from the Safe Mode on DOY 283 The Obsid for this measurement is 62658. This is a 4 CCD ECS measurement clocking I1-I3 and S3 since a 5 or 6 CCD measurement would have violated the 1DPAMZT limit. CLD File executed: 1A_4_CTI_24H_135.cld SUMMARY: -------- The CAP executed exactly as expected. TIMELINE (GMT day 291) ---------------------- 291:15:13 AOS on DSS 54 (early) 291:15:13 Telemetry in Format 4 291:15:50 Verified radiation levels acceptable 291:15:52 OC switches to Format 2 291:15:52 FP temp = -115.8 C -- starting temp 291:15:53 SCS-107 enabled 291:15:54 Obsid set to 62658 291:15:56 1A_WS029_255.CLD uploaded 291:15:57 SCS-255 enabled and activated 291:15:57 WSFTNEG110 command (focal plane to -110 C) 291:15:59 1A_4_CTI_24H_135.cld uploaded 291:16:00 SCS-135 enabled and activated 291:16:02 LOAD_TE observed 291:16:02 System configuration and Huffman table dumped 291:16:02 FP temp = -115.0 C 291:16:04 1STAT1ST bit changed from 1 to 0 indicating science run started 291:16:04 1DPICACU/1DPICBCU currents rose to correct values 291:16:10 FP temp = -111.6 C 291:16:13 FP temp = -110.5 C 291:16:14 First Bias map starts to be telemetered 291:16:16 FP temp = -109.8 C 291:16:18 FEP and BEP temperatures between +13.7 and +20.9 C 291:16:20 FP temp = -109.2 C 291:16:22 First event data 291:16:26 Event rates on I0-I3, & S3 look reasonable 291:16:26 overclock levels between -14 and -27 291:16:26 FP temp = -109.0 +/- 0.2 C and steady 291:16:26 1DPAMZT (DPA box temp) = +18.8 C and steady 291:16:41 FEP and BEP temperatures between +16.0 and +24.3 C 291:16:42 LOS