ASTROSAT CZTI

Data Quality Report

Orbit 00193

Creation date: 2024-06-27T13:57:36.223632
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/AS1P01_120T01_9000000016_00193cztM0_level2.evt modeM0/AS1P01_120T01_9000000016_00193cztM0_level2_quad_clean.evt
Size (bytes)306,178,56025,427,520
Size292.0 MB 24.2 MB
Events in quadrant A2,277,025156,637
Events in quadrant B2,306,392160,419
Events in quadrant C2,206,730157,867
Events in quadrant D2,349,155151,497

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156106
B0150104
C0154110
D0157111

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03039522241
B03109422857
C02898421041
D03311624743

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03923
B03721
C03317
D03721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195810.051073%
B194110.051520%
C1962150.764526%
D1933361.862390%

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 4020 2090 32 32 0.80% 1.53%
B 3907 2075 36 36 0.92% 1.73%
C 4027 2091 41 41 1.02% 1.96%
D 4036 2062 115 115 2.85% 5.58%

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 15 127 6997 49.87 583 580 128.7
A 0 253 3823 25.2 583 580 128.7
A 12 189 3242 20.69 583 580 128.7
B 0 247 13815 94.59 593 594 139.8
B 14 50 9207 61.62 593 594 139.8
B 0 217 4098 25.07 593 594 139.8
C 1 192 70459 463.17 533 552 150.9
C 0 202 28664 186.26 533 552 150.9
C 0 188 3753 21.21 533 552 150.9
D 10 229 133701 847.46 511 527 157.1
D 2 33 123205 780.67 511 527 157.1
D 5 48 37700 236.55 511 527 157.1

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