ASTROSAT CZTI

Data Quality Report

Orbit 35829

Creation date: 2022-05-19T15:27:31.498936
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_071T19_9000005144_35829cztM0_level2.evt modeM0/AS1A10_071T19_9000005144_35829cztM0_level2_quad_clean.evt
Size (bytes)494,807,04074,672,640
Size471.9 MB 71.2 MB
Events in quadrant A3,337,449480,359
Events in quadrant B3,399,363492,365
Events in quadrant C2,790,145486,003
Events in quadrant D5,111,443443,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131133
B0133352
C0112932
D0186422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51142655.181854%
B51143086.022683%
C5114791.544779%
D511471413.961674%

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 7087 5115 256 256 3.61% 5.00%
B 7086 5113 235 235 3.32% 4.60%
C 7087 5114 61 61 0.86% 1.19%
D 7087 5115 767 767 10.82% 15.00%

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 15 169 871799 7250.79 595 583 120.2
A 10 83 140239 1162.3 595 583 120.2
A 13 6 15743 126.17 595 583 120.2
B 5 172 982221 8712.41 587 573 112.7
B 4 232 45800 401.4 587 573 112.7
B 5 255 14564 124.17 587 573 112.7
C 15 214 215785 1572.79 586 592 136.8
C 0 10 195882 1427.33 586 592 136.8
C 0 207 49101 354.54 586 592 136.8
D 7 223 1634527 11737.77 567 550 139.2
D 2 250 783662 5625.53 567 550 139.2
D 13 249 137256 982.03 567 550 139.2

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