Extraction of a light curve from the TRN data

For the TRN (PH) data, the energy channels (min_channel and max_channel) should be specified. The WAM energy channels range from 0 to 54, and are compressed from the original flash ADC channel (0 to 63 plus one overflow bit).

Table 1.4: Bit-compression for 6-bit Flash ADC channels

Compressed Channels	ADC Channels	Binning
0-47	0-47	1
48-51	48-55	2
52-53	56-63	4
54	Overflow bit($\sim$64-150)	1

The approximate energy channels are calculated by

Energy (keV) = ADC Channel * 511/15

Note that this equation depends on the gain of the detector, which varies with time and operation.

You should also make deadtime correction for the PH light curves with the dt_cor option (dt_cor=yes).

For example, if you want to choose the full WAM energy band, you should set the min_channel=2 and max_channel=54 as follows. The channel 0 and 1 ($<$$\sim$50 keV) can be selected, but please note that they are affected by the low energy threshold and always provide noisy light curves.

hxdmkwamlc input_name=ae903005010hxd_1_wam_uf.evt.gz \
  outroot=ae903005010hxd_1 \
         leapfile=CALDB min_channel=2 max_channel=54 dt_cor=yes