ASTROSAT CZTI

Data Quality Report

Orbit 03940

Creation date: 2024-06-27T14:35:30.704548
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/AS1G05_172T01_9000000502_03940cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03940cztM0_level2_quad_clean.evt
Size (bytes)513,383,04085,536,000
Size489.6 MB 81.6 MB
Events in quadrant A3,605,826520,917
Events in quadrant B3,732,842527,718
Events in quadrant C3,341,171521,974
Events in quadrant D4,359,166498,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158833
B0159782
C0154032
D0182082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74881802.403846%
B74881632.176816%
C74881461.949786%
D74882303.071581%

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 7968 7489 17 17 0.21% 0.23%
B 7968 7489 2 2 0.03% 0.03%
C 7968 7489 0 0 0.00% 0.00%
D 7968 7489 59 59 0.74% 0.79%

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 0 118 183713 1019.73 866 844 179.3
A 8 15 42847 234.22 866 844 179.3
A 0 226 24808 133.63 866 844 179.3
B 14 167 122294 716.12 877 855 169.6
B 15 204 107304 627.72 877 855 169.6
B 4 81 47197 273.28 877 855 169.6
C 9 247 19311 93.93 846 849 196.5
C 10 65 9449 43.76 846 849 196.5
C 13 61 7040 31.5 846 849 196.5
D 9 82 629820 3132.33 837 813 200.8
D 2 232 233540 1158.94 837 813 200.8
D 2 63 85650 422.47 837 813 200.8

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
Veto Counter