ASTROSAT CZTI

Data Quality Report

Orbit 08905

Creation date: 2024-06-27T15:38:48.703916
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/AS1A03_092T01_9000001240_08905cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08905cztM0_level2_quad_clean.evt
Size (bytes)532,592,64099,178,560
Size507.9 MB 94.6 MB
Events in quadrant A4,813,978627,092
Events in quadrant B3,518,133641,443
Events in quadrant C3,158,211625,051
Events in quadrant D4,150,727608,387

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191062
B0153151
C0146881
D0171751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72022283.165787%
B7202640.888642%
C7202120.166620%
D72021081.499583%

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 7617 7203 119 119 1.56% 1.65%
B 7617 7203 15 15 0.20% 0.21%
C 7617 7203 0 0 0.00% 0.00%
D 7617 7203 110 110 1.44% 1.53%

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 8 5 1213135 7101.91 837 818 170.7
A 5 16 314542 1837.84 837 818 170.7
A 0 8 18617 104.27 837 818 170.7
B 10 16 91689 558.94 847 825 162.6
B 0 214 62890 381.79 847 825 162.6
B 0 219 25234 150.15 847 825 162.6
C 13 61 6228 28.74 809 812 188.4
C 8 128 2709 10.07 809 812 188.4
C 3 202 1962 6.1 809 812 188.4
D 12 233 582508 2679.97 807 784 217.1
D 8 195 289367 1329.48 807 784 217.1
D 2 14 92870 424.23 807 784 217.1

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