Format of the CP file
=====================

The CP file is the result of processing housekeeping, pressure, and trigger
counter records from the RPiRENA.  The housekeeping record contributes the wall
clock time, seconds since the Unix epoch 1970-01-01T00:00:00Z.

The pressure sensor record contributes the ambient pressure in mbar.

The trigger counter record contains a timestamp with ⅓µs resolution, and L1,
L2, and L3 trigger counts.  L1 triggers count when a detector signal exceeds
the trigger threshold.  L2 triggers count when a coincidence condition is met.
L3 is simply counting all trigger events.

The µMustang sensor has two identical detectors  A and B, ech with a block of 
BC432m plastic scintillator, size 83×83×25 mm³, read out via two Hammamatsu 
photodiodes 1×2cm².

The columns in the file are separated by whitespace.

 1. Data type tag: C64
 2. Counter resolution tag
   * 0: 8-bit
   * 1: 16-bit
   * 2: 32-bit
   * 3: 16-bit floating point
 
 3. L1[0] channel A1
 4. L1[1] channel A2
 5. L1[2] channel B1
 6. L1[3] channel B2
 
 7. L2[0] A1 or A2
 8. L2[1] B1 or B2
 9. L2[2] A1 and A2
10. L2[3] B1 abd B2
11. L2[4] (A1 or A2) and (B1 or B2)
12. L2[5] A1 and A2 and B1 and B2
13. L2[6] A1 and A2 and (B1 or B2)
14. L2[7] (A1 or A2) and B1 and B2

15. L3 all triggers.

16. ADC clock timestamp
17. livetime in seconds
18. pressure in mbar
19. wall clock time.