ASTROSAT CZTI

Data Quality Report

Orbit 27724

Creation date: 2024-06-27T19:43:33.856668
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/AS1T03_263T01_9000003990_27724cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27724cztM0_level2_quad_clean.evt
Size (bytes)524,079,360112,115,520
Size499.8 MB 106.9 MB
Events in quadrant A3,953,731745,754
Events in quadrant B3,743,066760,433
Events in quadrant C3,648,892727,924
Events in quadrant D4,071,550694,327

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156880
B0151340
C0148250
D0163590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66962633.927718%
B66972543.792743%
C66972063.076004%
D66972023.016276%

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 6816 6696 58 58 0.85% 0.87%
B 6817 6697 22 22 0.32% 0.33%
C 6817 6697 1 1 0.01% 0.01%
D 6817 6697 81 81 1.19% 1.21%

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 6 16 368340 1952.07 871 857 188.3
A 0 13 230052 1217.49 871 857 188.3
A 13 254 9895 48.01 871 857 188.3
B 3 64 230904 1308.76 867 850 175.8
B 5 255 67111 376.95 867 850 175.8
B 0 230 30509 168.73 867 850 175.8
C 3 233 223911 1080.94 838 843 206.4
C 14 238 137218 660.84 838 843 206.4
C 10 22 20256 94.07 838 843 206.4
D 1 52 515880 2443.69 839 818 210.8
D 13 168 236538 1118.36 839 818 210.8
D 11 176 70630 331.22 839 818 210.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter