GTAC Observation Log 1. Date : 23/09/2017 2. Observation Sr. No. : 9775 3. Observer : Nirupam Roy, Nissim Kanekar, Jayaram Narayanan Chengalur, Narendranath Patra 4. Observer's Email : roy.nirupam@gmail.com, nkanekar@ncra.tifr.res.in, chengalur@ncra.tifr.res.in, narendra@ncra.tifr.res.in 5. Project Name : The Temperature of the Warm Neutral Medium in the Milky Way 6. Project Code : 32_056 7. Operator(s) : Navnath, Nilesh 8. Command File : /odisk/gtac/cmd/nissim/0010-418.cmd 9. LTA File : /gsbifrdata/22sep/32_056_22sep2017.lta, /gwbifrdata2/22sep/32_056_22sep2017.lta 10. LogFlag File : /odisk/online1/logflags/32_056.FLAGS.21 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1411 MHz ,RF2 : 1411 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1350 MHz, ILO2 : 1350MHz , IVLO1 : 61 MHz, IVLO2 : 61 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 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 : 16.666666 MHz 24. Final BW : 2 MHz; Step # 4 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 139 28. LO5 -2 : 166 29. Frequency Parameters (TPA) : 1411 1411 1350 1350 61 61 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) : S06 : : Servo Problem. C01 : : Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 22 Sep 2017 21:10:00 - 23 Sep 2017 03:05:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 21:00 : Started setup. 21:15 : Started power eq. 21:28 : Started scan on 3C48 for 10 min. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 6.2500 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 8192 GPU_CHAN_NUM : 0:8191:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 1460 1460 GPU_DDCLO4 : 38.2500 38.2500 GPU_SB4 : 1 1 GCODE4 : 32_056 GPU_CNTRL : ONLINE GPU_FSTOP : ON ----------------------------------------------------------------------- 21:38 : Stopped scan. 21:45 : Started command file 02:48 : Stopped command file. 02:54 : Started scan on 3C48 03:02 : Stopped scan & observation session over.