ASTROSAT CZTI

Data Quality Report

Orbit 02836

Creation date: 2024-06-27T14:22:15.379958
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/AS1P01_999T99_9000000410_02836cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02836cztM0_level2_quad_clean.evt
Size (bytes)722,099,52049,423,680
Size688.6 MB 47.1 MB
Events in quadrant A2,683,413312,626
Events in quadrant B5,150,855270,884
Events in quadrant C5,258,239299,271
Events in quadrant D8,435,304258,324

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115833
B0187612
C0189532
D0285102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5049340.673401%
B504974614.775203%
C504998419.489008%
D5049249649.435532%

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 7205 5050 21 21 0.29% 0.42%
B 7205 5050 601 601 8.34% 11.90%
C 7205 5048 690 690 9.58% 13.67%
D 7205 5048 1879 1879 26.08% 37.22%

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 5 207945 1837.86 559 548 112.8
A 0 31 159887 1411.99 559 548 112.8
A 0 143 81236 715.02 559 548 112.8
B 0 4 1510548 14988.86 528 517 100.7
B 0 168 832427 8257.7 528 517 100.7
B 0 173 158175 1564.94 528 517 100.7
C 0 219 2192320 18318.34 515 517 119.7
C 1 16 556318 4645.19 515 517 119.7
C 3 14 157623 1313.04 515 517 119.7
D 0 226 2908357 28676.48 407 399 101.4
D 1 4 1851584 18255.24 407 399 101.4
D 1 66 1093610 10780.57 407 399 101.4

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