ASTROSAT CZTI

Data Quality Report

Orbit 03004

Creation date: 2024-06-27T14:23:19.937100
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_238T02_9000000420_03004cztM0_level2.evt modeM0/AS1G05_238T02_9000000420_03004cztM0_level2_quad_clean.evt
Size (bytes)838,068,48080,861,760
Size799.2 MB 77.1 MB
Events in quadrant A8,669,742424,208
Events in quadrant B5,890,661458,631
Events in quadrant C6,025,252459,817
Events in quadrant D4,161,260454,427

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321414
B0237783
C0248043
D0200293

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9382100310.690684%
B9382920.980601%
C93823163.368152%
D9382941.001919%

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 13693 9384 885 885 6.46% 9.43%
B 13693 9384 57 57 0.42% 0.61%
C 13693 9384 343 343 2.50% 3.66%
D 13693 9384 73 73 0.53% 0.78%

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 13 9 4454870 23205.34 944 924 191.9
A 14 249 334811 1739.57 944 924 191.9
A 0 50 145326 752.34 944 924 191.9
B 8 3 1790818 9327.55 999 975 191.9
B 5 70 65699 337.3 999 975 191.9
B 3 27 43380 220.99 999 975 191.9
C 0 219 2082931 9435.89 947 953 220.6
C 6 80 173986 784.22 947 953 220.6
C 1 192 51945 231.1 947 953 220.6
D 7 80 119436 511.46 940 913 231.7
D 13 114 72236 307.78 940 913 231.7
D 13 239 70434 300.0 940 913 231.7

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