VEGAS Pulsar Mode Scale Factors
This is a record of scale factors that give reasonably good output values in the VEGAS bandpass (i.e., the average bandpass is around 20-30 counts). The manager parameters are scale_i, scale_q, scale_u, and scale_v in incoherent modes, and scale_p0 and scale_p1 in coherent modes. These will be set using the vegas.scale config tool parameter.
Simulator Environment
These values all assume observation of the narrow-band artificial pulsar with the following settings
- Pulsar Attenuation: 21
- Output Attenuation: 10
- Pulsar digital display: approximately 0.58
Note that the artificial pulsar has a bandwidth of approximately 150 MHz, so these scale factors are appropriate for the lower portion of the band. Further, because the srbs-hpc1 simulator has only one GPU, only the lower coherent subband (1/8 of the total bandwidth) is processed in coherent modes.
Coherent Modes
Mode |
BOF File Name |
Scale Factor |
c0800x0256 |
c0800x0256_x14_7_2015_Jun_05_1912.bof |
2.25 |
c0800x0512 |
c0800x0512_x14_7_2015_May_07_2038.bof |
2.5 |
c1500x0128 |
c1500x0128_x14_7_2015_Jul_17_0910.bof |
2.0 |
c1500x0256 |
c1500x0256_x14_7_2015_Jul_16_1141.bof |
1.75 |
c1500x0512 |
c1500x0512_x14_7_2015_Dec_07_1057.bof |
2.0 |
c1500x1024 |
c1500x1024_x14_7_2015_Jul_25_1525.bof |
1.5 |
c1500x2048 |
c1500x2048_x14_7_2016_Jan_27_1507.bof |
0.25 |
Incoherent Modes
Mode |
BOF File Name |
Scale Factor |
i0800x0256 |
i0800x0256_x14_7_2015_Jun_04_2301.bof |
90 |
i0800x0512 |
i0800x0512_x14_7_2015_May_17_2357.bof |
90 |
i0800x1024 |
i0800x1024_x14_7_2015_May_13_2000.bof |
80 |
i0800x2048 |
i0800x2048_x14_7_ss_2015_Dec_16_1028.bof |
120 |
i0800x4096 |
i0800x4096_x14_7_2015_May_22_2349.bof |
80 |
i1500x0512 |
i1500x0512_x14_7_2015_Jul_01_1649.bof |
100 |
i1500x1024 |
i1500x1024_x14_7_2015_Jun_26_1625.bof |
40 |
i1500x2048 |
i1500x2048_x14_7_ss_2015_Dec_15_1510.bof |
80 |
i1500x4096 |
i1500x4096_x14_7_2015_Jun_26_0835.bof |
40 |
--
RyanLynch - 2015-12-15