SYSCAL Data Storage Formats

The RPFITS data stores some extra information in the header, as keywords, and some in the visibility data stream, by marking it with baseline number -1. For single dish data (baseline==0) the u,v,w variables are replaced with ra,dec,utc.

BINARY FORMAT OF RPFITS

VIS data	SYSCAL data
(baseline > 0)	(baseline = -1)
param 1=u in m	0.0
param 2=v in m	0.0
param 3=w in m	0.0
param 4=baseline number	-1.0
param 5=UT in seconds	sc_ut: UT in seconds
param 6= flag (if present)	sc_ant
param 7= bin (if present)	sc_if
param 8=if_no (if present)	sc_q
param 9=sourceno (if present)	sc_srcno
param 10=intbase integration time	0.0
param 11=data_format	0
followed by nchan*npol*(real[,imag[,wt]])	followed by sc_ant*sc_q floats

---

Syscal data variables

Q	MB	MB	ATCA	ATCA	Wide Band Corr	LBA	CABB	CABB
#	q1=0	q1>0	q1=0	q1>0	q1>0		q1=0	q1>0
q1	0	beam(>0)	0	ant(>0)	ant(>0)	ant	0	ant>0
q2	Az		Temp.	if_no	Freq band0	(like ATCA)	Temp	if_no
q3	El		Pressure	XY phase	Tsys0		Press	XY phase
q4	Par. Angle		Humidity	sqrt(TsysA)	Tsys0		Humid	sqrt(TsysA)
q5	Focus y		Windspeed	sqrt(TsysB)	Tsys0		Windspeed	sqrt(TsysB)
q6	Focus z		Wind Dir	S Stats A -	Freq band1		Wind dir	A GTP(counts)
q7	Focus R		Wind flag	S Stats A 0	Tsys1		Wind flag	A SDO(counts)
q8	Temp		Rain	S Stats A +	Tsys1		Rain	calJyA
q9	Press		Seemonphase	S Stats B -	Tsys1		Seemonphase	B GTP(counts)
q10	Humidity		Seemon rms	S Stats B 0	nrec radec recs		Seemon rms	B SDO(counts)
q11	Wind speed		Seemon flag	S Stats B +	ant		Seemon flag	calJyB
q12	Wind dir.			Par. Angle	utseconds		JyPerK(F1)	Par Angle
q13	Cal signal			Syscal Flag	ra		JyPerK(F2)	Syscal Flag
q14	time			XY Ampl.	dec			XY Ampl.(counts)
q15		Cal PolA		TrackErrMax	(repeated	Ant total delay (us)		TrackErrMax
q16		Cal PolB		TrackErrRMS	nrec times)	(fraction)		TrackErrRMS
q17	Ref beam	DSD off A				Ant clock delay
q18		DSD on A				(fraction)
q19		DSD off B
q20		DSD on B

Note: ​The RPFITS source code includes a documentation file called rpfits_syscal.def with most of this information, I've fixed up most discrepancies with that document.

calJy = counts per Jy calibration applied to the data