ASTROSAT CZTI

Data Quality Report

Orbit 18133

Creation date: 2024-06-27T17:45:34.656411
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/AS1A05_186T01_9000002692_18133cztM0_level2.evt modeM0/AS1A05_186T01_9000002692_18133cztM0_level2_quad_clean.evt
Size (bytes)503,930,88076,475,520
Size480.6 MB 72.9 MB
Events in quadrant A3,370,702470,667
Events in quadrant B3,519,573478,358
Events in quadrant C3,398,221450,913
Events in quadrant D4,502,832432,871

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143092
B0146732
C0143692
D0181373

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6933470.677917%
B6933630.908698%
C6933660.951969%
D69331482.134718%

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 9018 6935 2 2 0.02% 0.03%
B 9018 6935 2 2 0.02% 0.03%
C 9018 6935 1 1 0.01% 0.01%
D 9018 6935 86 86 0.95% 1.24%

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 4 2 12384 64.83 874 857 177.8
A 0 226 7491 37.31 874 857 177.8
A 3 137 6246 30.31 874 857 177.8
B 7 220 44845 263.61 877 856 166.9
B 0 189 20259 116.27 877 856 166.9
B 12 111 19582 112.22 877 856 166.9
C 14 238 129303 657.0 832 839 195.5
C 0 207 12504 59.66 832 839 195.5
C 3 233 6384 28.36 832 839 195.5
D 7 238 715530 3527.82 835 813 202.6
D 11 176 239946 1180.35 835 813 202.6
D 1 52 112788 552.71 835 813 202.6

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