ASTROSAT CZTI

Data Quality Report

Orbit 19501

Creation date: 2024-06-27T18:03:34.090884
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_175T01_9000002894_19501cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19501cztM0_level2_quad_clean.evt
Size (bytes)505,529,28098,380,800
Size482.1 MB 93.8 MB
Events in quadrant A3,249,315642,376
Events in quadrant B3,428,667641,113
Events in quadrant C3,690,507612,988
Events in quadrant D4,475,108604,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141361
B0145561
C0151121
D0180151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6867891.296054%
B68681321.921957%
C68681772.577169%
D68681602.329645%

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 7192 6868 0 0 0.00% 0.00%
B 7193 6869 19 19 0.26% 0.28%
C 7193 6869 16 16 0.22% 0.23%
D 7193 6869 48 48 0.67% 0.70%

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 11 47 8556 45.61 838 818 169.7
A 0 226 7310 38.27 838 818 169.7
A 13 254 6952 36.15 838 818 169.7
B 3 64 77793 479.95 827 805 160.4
B 0 198 66381 408.8 827 805 160.4
B 4 171 28527 172.82 827 805 160.4
C 3 233 198413 1062.77 801 805 185.9
C 5 112 193488 1036.28 801 805 185.9
C 14 238 123407 659.37 801 805 185.9
D 1 52 920158 4668.6 813 789 196.9
D 2 16 389979 1976.32 813 789 196.9
D 7 238 43298 215.86 813 789 196.9

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