GTAC Observation Log 1. Date : 07/08/2016 2. Observation Sr. No. : 8799 3. Observer : Yashwant Gupta, BHAL CHANDRA JOSHI, Jayanta Roy, Yogesh Maan, Kishalay De, Manjari Bagchi, Prajwal Padmanabh, Gopakumar Achamveedu, Nikhil Vijay Naik 4. Observer's Email : ygupta@ncra.tifr.res.in, bcj@ncra.tifr.res.in, jroy@ncra.tifr.res.in, ymaan@ncra.tifr.res.in, ugkishalayde@ug.iisc.in, manjari.bagchi@gmail.com, prajwal3108@gmail.com, gopu.tifr@gmail.com, naiknikhil27@gmail.com 5. Project Name : Towards high precision pulsar timing with the upgraded GMRT 6. Project Code : 30_043 7. Operator(s) : Navnath, Pramod, Sachin 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata/06aug/30_043_325MHz_06aug2016.lta.1, /gsbifrdata/06aug/30_043_325MHz_06aug2016.lta, /gsbifrdata/06aug/30_043_1420MHz_06aug2016.lta.1, /gsbifrdata/06aug/30_043_1420MHz_06aug2016.lta, /gwbifrdata1/06aug/30_043_06aug2016_suba4_gwb.lta, /gwbifrdata1/06aug/30_043_06aug2016_suba2_gwb.lta 10. LogFlag File : /odisk/online1/logflags/SUBA4.FLAGS.826, /odisk/online1/logflags/SUBA4.FLAGS.825, /odisk/online1/logflags/SUBA2.FLAGS.989, /odisk/online1/logflags/SUBA2.FLAGS.988 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,OFF, IF-CH2 : 4+14 dB, 32 MHz,OFF 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 : OFF 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : Volt 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 :29 32. Name of Non-Working Antennas (with reason for each) : C11 : ABC time out 33. Note for Backup :Note L- last three pulsar data saved /data3/gsbuser/06aug2016 area of node gwbh2 and gwbh3 respectively. 34. Start and End Time of Obs.(IST): 06 Aug 2016 21:00:00 - 07 Aug 2016 02:30:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 20:00 : Started set up. # 325MHz # suba 2 # C00 C01 C02 C05 C09 C10 C13 C14 W01 S01 ante 10 7 6 5 19 4 12 11 10 8 26 cp 0;defs 2;subar 2 tpa 306 306 255 255 51 51 # 1420MHz # suba 4 # C03 C04 C06 C08 C11 C12 W02 W03 W04 W05 W06 E02 E03 E04 E05 E06 S02 S03 S04 S06 ante 20 1 3 20 24 9 2 13 14 15 16 25 17 18 21 22 23 27 28 29 30 cp 0;defs 4;subar 4 tpa 1454 1454 1505 1505 51 51 Antennas selected in GSB GAC : C00 C01 C02 C05 C09 C10 C13 C14 W01 S01 Antennas selected in GWB GAC : # 325MHz # suba 2 # C00 C01 C02 C05 C09 C13 (Broadband antennas) # 1420MHz # suba 4 # C03 C04 C06 C08 C11 E02 E03 S02 S03 W02 Antennas connected in GWB : C00 C01 C02 C03 C04 C05 C06 C08 C09 C11 C13 E02 E03 S02 S03 W02 ------------------------------------------------------------------------- 20:40 : Power equalized and phasing done on 3C286. 20:46:12 : Started scan on 3C286 for ~ 4.5634 min. 21:00:23 : Started scan on 1830-360 for ~ 1.61061 min. 21:02:26 : Started scan on 1830-360 for ~ 1.07374 min. 21:06:23 : Started scan on J1455-3330 for ~ 0 min. 21:09:32 : Started scan on J1455-3330 for ~ 22.0117 min. 21:09 : Note : RFI observed at 325MHz. 21:34:20 : Started scan on 1822-096 for ~ 2.14748 min. 21:36:49 : Started scan on 1822-096 for ~ 0.53687 min. 21:37:58 : Started scan on 1822-096 for ~ 0.805306 min. 21:40:43 : Started scan on J1614-2230 for ~ 20.9379 min. 22:03:44 : Started scan on B1642-03 for ~ 5.10027 min. 22:11:22 : Started scan on 1609+266 for ~ 1.87905 min. 22:13:34 : Started scan on 1609+266 for ~ 0.805306 min. 22:15:53 : Started scan on J1640+2224 for ~ 21.4748 min. Note : 21:09 to 22:40 : Strong RFI is observed to 325 MHz only. 22:41:01 : Started scan on 1822-096 for ~ 1.61061 min. 22:43:05 : Started scan on 1822-096 for ~ 0.53687 min. 23:26 : CD pipeline hung. LtaTime 84221.135277 Seqnum 5592 BlockSize 2162704 44749 [node35.gmrt.ncra.tifr.res.in:04475] mca_btl_tcp_frag_send: writev failed with errno=110 [node28.gmrt.ncra.tifr.res.in:12496] mca_btl_tcp_frag_send: writev faid [node51][0,1,34][btl_tcp_endpoint.c:572:mca_btl_tcp_endpoint_complete_connect] connect() failed with errno=113 [node53][0,1,35][btl_tcp_endpoint.c:572:mca_btl_tcp_endpoint_complete_conned 23:30 : Restared gsb chain. 00:09:25 : Started scan on J1741+1351 for ~ 16.9114 min. 00:31:45 : Started scan on 1822-096 for ~ 1.07374 min. 00:33:17 : Started scan on 1822-096 for ~ 0.268435 min. 00:40: : Started observing pulsars without GWB only. 02:05 : Observation session over. ---------------------------------------------------------------