ASTROSAT CZTI

Data Quality Report

Orbit 31330

Creation date: 2024-06-27T20:26:49.544685
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/AS1T04_025T01_9000004538_31330cztM0_level2.evt modeM0/AS1T04_025T01_9000004538_31330cztM0_level2_quad_clean.evt
Size (bytes)567,509,760130,363,200
Size541.2 MB 124.3 MB
Events in quadrant A3,191,327897,520
Events in quadrant B5,905,162865,710
Events in quadrant C3,450,793851,515
Events in quadrant D4,166,904847,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141721
B0227181
C0148081
D0171081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6976350.501720%
B69763124.472477%
C69771512.164254%
D69771291.848932%

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 7381 6977 0 0 0.00% 0.00%
B 7381 6977 127 127 1.72% 1.82%
C 7382 6978 2 2 0.03% 0.03%
D 7382 6978 97 97 1.31% 1.39%

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 13 254 14135 80.46 826 808 165.6
A 3 137 8430 46.02 826 808 165.6
A 0 226 6894 36.74 826 808 165.6
B 6 159 1993763 12921.07 800 780 154.2
B 5 172 442754 2865.44 800 780 154.2
B 4 80 142330 917.71 800 780 154.2
C 14 238 158817 870.6 777 781 181.5
C 3 233 148380 813.1 777 781 181.5
C 14 254 46791 253.46 777 781 181.5
D 8 195 694330 3685.45 791 770 188.2
D 12 233 363297 1926.4 791 770 188.2
D 13 249 60159 315.58 791 770 188.2

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