ASTROSAT CZTI

Data Quality Report

Orbit 30358

Creation date: 2024-06-27T20:14:13.150618
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/AS1A10_053T15_9000004364_30358cztM0_level2.evt modeM0/AS1A10_053T15_9000004364_30358cztM0_level2_quad_clean.evt
Size (bytes)658,661,760104,616,000
Size628.1 MB 99.8 MB
Events in quadrant A3,496,118691,069
Events in quadrant B5,424,197689,498
Events in quadrant C7,012,127627,058
Events in quadrant D3,532,882663,623

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148891
B0215441
C0257241
D0152381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7134741.037286%
B71351672.340575%
C713594313.216538%
D7135771.079187%

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 7494 7135 11 11 0.15% 0.15%
B 7495 7136 3 3 0.04% 0.04%
C 7495 7136 523 523 6.98% 7.33%
D 7495 7136 17 17 0.23% 0.24%

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 96 87663 489.05 879 858 177.5
A 13 254 13567 71.6 879 858 177.5
A 8 192 11871 62.05 879 858 177.5
B 6 159 1992640 12002.64 868 846 165.9
B 12 111 21006 121.49 868 846 165.9
B 11 111 19252 110.92 868 846 165.9
C 3 233 3646958 18639.64 826 830 195.6
C 14 238 131936 670.24 826 830 195.6
C 2 114 16037 77.74 826 830 195.6
D 2 250 109414 531.73 857 839 204.2
D 13 104 92303 447.93 857 839 204.2
D 8 195 61304 296.12 857 839 204.2

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