Add a correction to the shutter value file due to new hardware installed when using timepix

[JeanBilheux]

We won't have a detector offset value anymore. it will be up to us to figure out that value and then create the shutter value file.

inputs:

• first lambda measured

questions:

• how to figure out where to cut the list of images (all images before the cutting point are moved to the end)

output:

• new time spectra

[JeanBilheux]

Shimin's code

# time and reference spectra
# 0.3956*(delay + Time-of-flight in µs/source-to-detector distance in cm)
HistBins = 1500
Frame_ms = 1/60*1e3
_time = np.linspace(0, Frame_ms, HistBins+1)
time = (_time[1:]+_time[:-1])/2
 
delay = 0
distance =2500 
wave = 0.3956*(delay + time*1e3)/distance
 
no_delay_sp = TIFF[1][i].sum(axis=(1,2))
    
 _roll_over = np.zeros_like(no_delay_sp)
start_pt = np.argmin(abs(wave-ang_min))
length2end = (len(no_delay_sp)-start_pt).astype(int)
_roll_over[: length2end] = no_delay_sp[start_pt:]
_roll_over[length2end:] = no_delay_sp[:start_pt]

what is ang_min ?
shape of TIFF ?

[ShiminTang]

TIFF[1][i] is a 3D To cube 1500512512
ang_min is start lambda 0