ASTROSAT CZTI

Data Quality Report

Orbit 12178

Creation date: 2024-06-27T16:23:27.230680
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/AS1A04_160T01_9000001798_12178cztM0_level2.evt modeM0/AS1A04_160T01_9000001798_12178cztM0_level2_quad_clean.evt
Size (bytes)636,284,160132,704,640
Size606.8 MB 126.6 MB
Events in quadrant A3,823,448906,613
Events in quadrant B7,073,894826,951
Events in quadrant C3,311,727901,246
Events in quadrant D4,546,291855,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166222
B0262051
C0154301
D0186491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75981011.329297%
B7598134917.754672%
C7598270.355357%
D75981241.632008%

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 7844 7600 4 4 0.05% 0.05%
B 7844 7600 818 818 10.43% 10.76%
C 7844 7600 2 2 0.03% 0.03%
D 7844 7600 67 67 0.85% 0.88%

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 1 162 142696 805.79 863 843 176.0
A 1 178 72960 409.66 863 843 176.0
A 1 161 65172 365.42 863 843 176.0
B 4 239 2540819 16801.54 797 777 151.2
B 10 16 356609 2353.71 797 777 151.2
B 3 64 329738 2175.97 797 777 151.2
C 15 208 31467 158.66 836 839 193.0
C 0 207 11620 55.85 836 839 193.0
C 13 61 6117 27.34 836 839 193.0
D 8 195 347817 1729.45 824 796 200.7
D 10 157 323979 1610.65 824 796 200.7
D 1 52 274407 1363.6 824 796 200.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter