A2621 on/offs at 750 MHz

oct11

Intro:

A2621 is doing 5 min on/off position switching and 5 minute double position switching (dps) with the 800 MHz rcvr

Plots of days

Each day the computing was:

Process the on/off patterns. The output data is in degK
Process the dps patterns. The output data is in Jy.

The calibrator for IC-443-G1 is 4C _22.12 (J0603+219).
From NED I got a flux estimate of 3.4 Jy at 750 MHz (i eyeballed it..).
I used this value for the flux across the entire band. Part of the slope in the plots is probably from assuming the flux is constant across the 100 MHz.

For a single day average the data for the same source,band
plot each band separately (source strength in K or Jy) with polA,PolB plotted separately

polA red, polB green.
The mean and rms across the polA and polB bands are printed at the top (degK for on/off, Jy for dps)

28oct11 and afterwards i switched to a robust mean and rms (throwout points beyond 3 sigman and interate).

Plot all bands on one graph with polA,B averaged.
Include ascii datafiles of the averaged data for each source across the band

File format:

ascii.
freq srcStrength chan(i)
polA and polB have been averaged.
there are 57344 lines (8192 channels * 7 bands)
The strength is degK for on/off and Jy for dps

the Jy for the dps are estimates. I used a single flux value across the entire band for the calibrator.

TABLE with plots and ascii data by date:

	PLOTS of daily averages				DATA (avg polA,B) (All Bands)
date	individual bands		all bands		DATA (avg polA,B) (All Bands)
	onoff	dps	onoff	dps	onoff (K)	dps (Jy)
25oct11	(.ps) (.pdf)		(.ps) (.pdf)		IC-443-G1 TMC-1
26oct11	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	TMC-1	IC-443-G1
27oct11	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	TMC-1	IC-443-G1
28oct11	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	TMC-1	IC-443-G1
29oct11	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	TMC-1	IC-443-G1
30oct11	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	TMC-1	IC-443-G1
31oct11	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	TMC-1	IC-443-G1
01nov11	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	(.ps) (.pdf)	TMC-1	IC-443-G1

The the data for each source was then averaged over all days:

Cumulative average of all runs (.ps) (.pdf):

I did't include the on/off data on IC-443-G1 since it had too much ripple.
At the start of each source the current total seconds and expected rms is printed.
The title of each plot also has the mean and rms computed from the data.

I used a robust rms throwing out any points above 3 sigma (then iterating..).

processing: usr/a2621/a2621.pro

 home_~phil