Format of QDP Output Files

The meaning and format of independent variable vector and error, result vectors and errors and exposure vector written to XRONOS QDP files depend on the XRONOS application which is used.

acf acs Output Files

The output file produced by application acf and acs contains 3 vectors

• Vector 1: Time Delay (with errors representing half width of time delay bin)(X-axis)
• Vector 2: Autocorrelation (with errors) (Y-axis)
• Vector 3: Exposure (without errors): this is the number of times delay bins that were averaged in time delay (as a result of rebinning) and in time (as a result of averaging in a frame).

ccf ccs Output Files

The output file produced by application ccf and ccs contains 3 vectors

• Vector 1: Time Delay (with errors representing half width of time delay bin)(X-axis)
• Vector 2: Cross Correlation (with errors) (Y-axis)
• Vector 3: Exposure (without errors): this is the number of times delay bins that were averaged in time (as a result of averaging in a frame).

ef1 Output File

The output file produced by application ef1 contains 3 vectors

• Vector 1: Phase (with errors representing half phasebin width) (X-axis)(2 cycles are written)
• Vector 2: Normalised Intensity or Counts/s (with errors) (Y-axis)
• Vector 3: Exposure of each newbin (without errors).

ef2 Output File

The output files produced by application ef2 contains 6 vectors

• Vector 1: Phase (with errors representing half phasebin width) (X-axis)(2 cycles are written)
• Vector 2: Normalised Intensity or Counts/s Series 1 (with errors)
• Vector 3: Normalised Intensity or Counts/s Series 2 (with errors)
• Vector 4: Normalised Intensity or Counts/s Series 1+2 (with errors)
• Vector 5: Ratio Series 2/Series 1 (with errors)
• Vector 6: Exposure of each newbin (without errors) (flag only) (=1 if phasebins of series 1 and 2 are good, =-1.2e-34 otherwise)

ef3 Output File

The output file produced by application ef3 contains 8 vectors

• Vector 1: Phase (with errors representing half phasebin width) (X-axis)(2 cycles are written)
• Vector 2: Normalised Intensity or Counts/s Series 1 (with errors)
• Vector 3: Normalised Intensity or Counts/s Series 2 (with errors)
• Vector 4: Normalised Intensity or Counts/s Series 3 (with errors)
• Vector 5: Ratio Series 2/Series 1 (with errors)
• Vector 6: Ratio Series 3/Series 2 (with errors)
• Vector 7: Normalised Intensity or Count/s Ser. 1+2+3 (with errors)
• Vector 8: Exposure of each newbin (without errors) (flag only) (=1 if phasebin of series 1, 2 and 3 are good, =-1.2e-34 otherwise).

efs Output File

The output file produced by application efs contains 3 vectors

• Vector 1: Period (with errors representing half period resolution) (X-axis)
• Vector 2: Chi squared (with errors)
• Vector 3: Exposure=1 (without errors) (flag only).

lc1 Output File

The output file produced by application lc1 contains 3 vectors

• Vector 1: Time (with errors representing half newbin width)(X-axis)
• Vector 2: Counts/s (with errors)
• Vector 3: Exposure of each newbin (without errors)

lc2 Output File

The output file produced by application lc2 contains 6 vectors

• Vector 1: Time (with errors representing half newbin width)(X-axis)
• Vector 2: Counts/s Series 1 (with errors)
• Vector 3: Counts/s Series 2 (with errors)
• Vector 4: Counts/s Series 1+2 (with errors)
• Vector 5: Ratio Series 2/ Series 1 (with errors)
• Vector 6: Exposure of each newbin (without errors) (flag only) (=1 if both newbins of series 1 and 2 are good, else =-1.2e-34)

lc3 Output Files

The output file produced by application lc3 contains 8 vectors

• Vector 1: Time (with errors representing half newbin width)(X-axis)
• Vector 2: Counts/s Series 1 (with errors)
• Vector 3: Counts/s Series 2 (with errors)
• Vector 4: Counts/s Series 3 (with errors)
• Vector 5: Ratio Series 2/ Series 1 (with errors)
• Vector 6: Ratio Series 3/ Series 2 (with errors)
• Vector 7: Counts/s Series 1 + Series 2 + Series 3 (with errors)
• Vector 6: Exposure of each newbin (without errors) (flag only) (=1 if newbins of series 1, 2 and 3 are good, else =-1.2e-34)

psd pss Output Files

The output file produced by application psd and pss contains 3 vectors

• Vector 1: Frequency (with errors representing freq. bin half width)(X-axis)
• Vector 2: Power (with errors)
• Vector 3: Exposure (without errors): this is the number of power spectrum bins that were averaged in frequency (as result of rebinning) and in time (as a result of averaging in a frame). This value x2 gives the number of degree of freedom of the relevant chi-square distribution of the power in each frequency bin (x1 for the Nyquist frequency).

tss Output Files

The output file produce by the application tss contains 3 vectors :

• Vector 1: Time Delay (with errors representing half width of time delay bin) (X-axis)
• Vector 2: Time skewness (with errors)
• Vector 3: Exposure (without errors): this is the number of time delay bins that were averaged in time delay (as a result of rebinning) and in time (as a result of averaging in a frame).