GTAC Observation Log 1. Date : 13/08/2017 2. Observation Sr. No. : 9666 3. Observer : Yashwant Gupta, BHAL CHANDRA JOSHI, Nikhil Vijay Naik, Kishalay De, Yogesh Maan, Manjari Bagchi, Jayanta Roy, Gopakumar Achamveedu 4. Observer's Email : ygupta@ncra.tifr.res.in, bcj@ncra.tifr.res.in, naiknikhil27@gmail.com, ugkishalayde@ug.iisc.in, ymaan@ncra.tifr.res.in, manjari.bagchi@gmail.com, jroy@ncra.tifr.res.in, gopu.tifr@gmail.com 5. Project Name : Towards precision pulsar timing with the upgraded GMRT 6. Project Code : 32_032 7. Operator(s) : Navnath 8. Command File : /odisk/gtac/cmd/32_032/13aug/obs.cmd 9. LTA File : /gwbifrdata/13aug/32_032B_13aug2017_suba4_1460.lta, /gwbifrdata/13aug/32_032B_13aug2017_suba3_850.lta, /gwbifrdata/13aug/32_032B_13aug2017_suba3_750.lta, /gwbifrdata/13aug/32_032B_13aug2017_suba2_500.lta 10. LogFlag File : /odisk/online1/logflags/32_032.FLAGS.20 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1454 MHz ,RF2 : 1454 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1505 MHz, ILO2 : 1505MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 1454 1454 1505 1505 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : E06 : : Frequently getting ABC Reset. W03 : : Elevation brake. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 13 Aug 2017 12:00:00 - 13 Aug 2017 16:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 11:00 : Started feed rotation @ L band. 11:10 : Started setup for 1390 Mhz. 11:20 : Started PNTG Run. 11:55 : pntg done. 12:00 : Started subar splinting in 3 Subarrays #325Mhz # sub 2 # C01 C04 C06 W01 S01 ante 5 6 3 20 8 26 cp 0;defs 2;subar 2 #610 Mhz# sub 3 # C02 C05 C09 W02 E03 S02 ante 6 5 19 4 13 18 27 cp 0;defs 3;subar 3 #1420 # sub 4 # C00 C03 C08 C10 C11 C12 C13 C14 W03 W04 W05 W06 E02 E04 E05 E06 S03 S04 S06 ante 19 7 1 24 12 9 2 11 10 14 15 16 25 17 21 22 23 28 29 30 cp 0;defs 4;subar 4 12:10 : Started RF settings for 325,685 and 1420 Mhz 12:15 : Started GAB settings. 12:25 : Started power eq 12:35 : Started phasing on 3C147. 12:44 : Started cmd file. /odisk/gtac/cmd/32_032/13aug/obs.cmd 12:47 : Started scan pulsar. Note : Beam 2 and Beam 3 antennas by mistake configuration swapped. Beam 1 : 325 beam 2 : 610 baam 3 : 1420. GAC Config for Fist Pulsar :- # GWB GAC configuration is as follows : # BEAM-1:130 :: C01 C04 C06 S01 W01 Total=5 # BEAM-1:175 :: C01 C04 C06 S01 W01 Total=5 # BEAM-2:130 :: C02 C05 E03 W02 Total=4 # BEAM-2:175 :: C02 C05 E03 S02 W02 Total=5 # BEAM-3:130 :: C00 C03 C08 C10 C11 C12 C13 C14 E02 E04 E05 S03 S04 S06 W04 W05 W06 Total=17 # BEAM-3:175 :: C00 C03 C08 C10 C11 C12 C13 C14 E02 E04 E05 S03 S04 S06 W04 W05 W06 Total=17 =========================================================================== 13:15 : stared scan on pulsar on J0645+5158. Note : Restored GAC setting correct as per cmd file beam1 : 325 beam2 : 1420 beam3 : 610 # GWB GAC configuration is as follows : # BEAM-1:130 :: C01 C04 C06 S01 W01 Total=5 # BEAM-1:175 :: C01 C04 C06 S01 W01 Total=5 # BEAM-2:130 :: C00 C03 C08 C10 C11 C12 C13 C14 E02 E04 E05 S03 S04 S06 W04 W05 W06 Total=17 # BEAM-2:175 :: C00 C03 C08 C10 C11 C12 C13 C14 E02 E04 E05 S03 S04 S06 W04 W05 W06 Total=17 # BEAM-3:130 :: C02 C05 E03 W02 Total=4 # BEAM-3:175 :: C02 C05 E03 S02 W02 Total=5 13:15:37 : Started scan on J0645+5158 for ~ 20.2669 min. 13:39:48 : Started scan on 0744-064 for ~ 1.07374 min. 13:41:08 : Started scan on 0744-064 for ~ 0.805306 min. 13:44:02 : Started scan on J0751+1807 for ~ 20.2669 min. 14:07:27 : Started scan on 0834+555 for ~ 1.07374 min. 14:08:47 : Started scan on 0834+555 for ~ 0.805306 min. 14:11:40 : Started scan on J1012+5307 for ~ 20.2669 min. 14:38:46 : Started scan on 1130-148 for ~ 0.939523 min. 14:40:10 : Started scan on 1130-148 for ~ 0.671088 min. 14:44:01 : Started scan on J1022+1001 for ~ 20.2669 min. 15:07:16 : Started scan on 1130-148 for ~ 1.07374 min. 15:08:40 : Started scan on 1130-148 for ~ 0.671088 min. 15:11:34 : Started scan on J1024-0719 for ~ 20.2669 min. 15:35:08 : Started scan on 1311-222 for ~ 0.939523 min. 15:36:33 : Started scan on 1311-222 for ~ 1.47639 min. 15:39:22 : Started scan on J1455-3330 for ~ 20.2669 min. 16:00 Command file stopped. 16:00 Observation stopped.