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