ASTROSAT CZTI

Data Quality Report

Orbit 20209

Creation date: 2024-06-27T18:12:27.029587
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/AS1A06_005T02_9000002996_20209cztM0_level2.evt modeM0/AS1A06_005T02_9000002996_20209cztM0_level2_quad_clean.evt
Size (bytes)1,266,583,680233,352,000
Size1.2 GB 222.5 MB
Events in quadrant A8,739,5811,524,801
Events in quadrant B9,215,3921,528,477
Events in quadrant C8,691,8551,456,277
Events in quadrant D10,574,1061,397,027

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357144
B0370944
C0358064
D0417634

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168432851.692098%
B168423572.119701%
C168424082.422515%
D168426373.782211%

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 20193 16846 18 18 0.09% 0.11%
B 20192 16845 36 36 0.18% 0.21%
C 20192 16845 0 0 0.00% 0.00%
D 20192 16845 398 398 1.97% 2.36%

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 117314 259.41 2230 2191 443.8
A 14 238 47184 101.38 2230 2191 443.8
A 0 226 19254 38.45 2230 2191 443.8
B 7 220 335524 807.08 2212 2161 413.0
B 12 111 48669 112.6 2212 2161 413.0
B 0 198 45099 103.95 2212 2161 413.0
C 14 238 334930 683.61 2125 2140 486.8
C 1 16 26865 50.79 2125 2140 486.8
C 3 233 24847 46.64 2125 2140 486.8
D 1 52 1993312 3850.28 2151 2093 517.2
D 7 38 141993 270.51 2151 2093 517.2
D 5 222 103648 196.37 2151 2093 517.2

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