ASTROSAT CZTI

Data Quality Report

Orbit 03928

Creation date: 2024-06-27T14:35:21.045317
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_03928cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03928cztM0_level2_quad_clean.evt
Size (bytes)535,737,60076,662,720
Size510.9 MB 73.1 MB
Events in quadrant A3,162,043475,487
Events in quadrant B3,798,937472,451
Events in quadrant C2,904,406475,770
Events in quadrant D5,902,862428,499

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01402
B01402
C01402
D01404

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014221120
B015794154
C013885147
D022569308

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67341201.782002%
B67231161.725420%
C6719350.520911%
D670688113.137489%

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 6989 6786 6 6 0.09% 0.09%
B 6989 6782 4 4 0.06% 0.06%
C 6989 6786 1 1 0.01% 0.01%
D 6989 6783 731 731 10.46% 10.78%

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 104032 648.26 771 752 159.3
A 2 79 24502 149.07 771 752 159.3
A 13 210 18021 108.39 771 752 159.3
B 3 0 359154 2367.3 770 750 151.4
B 15 204 267759 1763.63 770 750 151.4
B 4 170 54655 356.05 770 750 151.4
C 10 65 12037 65.53 738 741 172.4
C 13 61 6157 31.42 738 741 172.4
C 9 247 3610 16.64 738 741 172.4
D 8 112 1504401 8915.34 704 683 168.7
D 2 232 847759 5022.2 704 683 168.7
D 1 7 256196 1514.9 704 683 168.7

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
Veto Counter