ASTROSAT CZTI

Data Quality Report

Orbit 11903

Creation date: 2024-06-27T16:19:53.261145
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A04_088T05_9000001764_11903cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11903cztM0_level2_quad_clean.evt
Size (bytes)641,949,12076,824,000
Size612.2 MB 73.3 MB
Events in quadrant A6,305,978400,161
Events in quadrant B4,286,059457,343
Events in quadrant C3,673,607468,266
Events in quadrant D4,641,712452,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237533
B0177352
C0164452
D0188992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7878125115.879665%
B78784235.369383%
C78782593.287636%
D78783083.909622%

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 8184 7880 843 843 10.30% 10.70%
B 8184 7880 39 39 0.48% 0.49%
C 8184 7880 2 2 0.02% 0.03%
D 8184 7881 57 57 0.70% 0.72%

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 14 63 2246912 11985.86 902 879 187.4
A 8 15 200650 1066.07 902 879 187.4
A 1 162 141599 750.95 902 879 187.4
B 4 239 328307 1772.98 949 923 184.7
B 15 204 77590 415.2 949 923 184.7
B 0 85 41462 219.54 949 923 184.7
C 8 128 9796 40.59 936 940 218.2
C 14 234 7993 32.33 936 940 218.2
C 13 61 6920 27.41 936 940 218.2
D 8 195 516577 2299.6 928 900 224.2
D 1 52 338195 1504.13 928 900 224.2
D 13 249 104758 463.14 928 900 224.2

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