ASTROSAT CZTI

Data Quality Report

Orbit 20160822_G05_237T01_9000000620_level2

Creation date: 2018-05-17T13:26:08.826607
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G05_237T01_9000000620cztM0_level2.evt modeM0/AS1G05_237T01_9000000620cztM0_level2_quad_clean.evt
Size (bytes)13,583,750,4001,865,378,880
Size12.7 GB 1.7 GB
Events in quadrant A76,627,66312,134,008
Events in quadrant B79,426,73712,234,035
Events in quadrant C69,684,37712,120,208
Events in quadrant D175,552,5159,734,256

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02290
C02290
D02290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030600
B030520
C030520
D030500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03250170
B03320590
C03085780
D06232060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15000125301.686655%
B14999622241.482706%
C14998011900.793439%
D1495434850832.437493%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 182880 150231 653 653 0.36% 0.43%
B 182880 150229 207 207 0.11% 0.14%
C 182880 150225 9 9 0.00% 0.01%
D 182880 149708 41005 41005 22.42% 27.39%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 50 2183602 582.41 18310 17954 3718.4
A 0 31 1782962 474.67 18310 17954 3718.4
A 8 15 1166304 308.83 18310 17954 3718.4
B 15 204 3207484 925.64 18420 18041 3445.7
B 4 80 1569370 450.23 18420 18041 3445.7
B 15 54 766520 217.22 18420 18041 3445.7
C 13 61 144993 31.19 17726 17889 4074.7
C 12 4 142028 30.47 17726 17889 4074.7
C 9 247 137906 29.45 17726 17889 4074.7
D 2 63 90611934 24817.03 14836 14423 3650.6
D 1 52 5729427 1565.49 14836 14423 3650.6
D 2 136 4293220 1172.07 14836 14423 3650.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter