ASTROSAT CZTI

Data Quality Report

Orbit 13088

Creation date: 2024-06-27T16:36:08.069115
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_067T01_9000001926_13088cztM0_level2.evt modeM0/AS1A04_067T01_9000001926_13088cztM0_level2_quad_clean.evt
Size (bytes)566,533,44086,063,040
Size540.3 MB 82.1 MB
Events in quadrant A3,642,859526,540
Events in quadrant B5,223,797517,705
Events in quadrant C3,837,280529,764
Events in quadrant D3,944,949510,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156464
B0204293
C0166353
D0169573

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74841451.937467%
B748482310.996793%
C74841461.950828%
D74851512.017368%

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 7940 7488 6 6 0.08% 0.08%
B 7940 7488 498 498 6.27% 6.65%
C 7940 7488 41 41 0.52% 0.55%
D 7941 7489 49 49 0.62% 0.65%

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 12 189 106710 591.76 881 860 178.9
A 8 15 37713 206.03 881 860 178.9
A 1 162 29346 159.25 881 860 178.9
B 4 239 1284828 8086.31 829 807 158.8
B 3 64 328506 2063.73 829 807 158.8
B 0 230 167115 1047.35 829 807 158.8
C 15 208 451552 2297.4 848 851 196.2
C 14 234 62293 313.19 848 851 196.2
C 13 61 6114 26.83 848 851 196.2
D 1 52 618455 3046.33 846 821 202.7
D 7 80 38440 185.55 846 821 202.7
D 2 234 34791 167.55 846 821 202.7

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