ASTROSAT CZTI

Data Quality Report

Orbit 20170524_A03_051T01_9000001242_level2

Creation date: 2021-08-26T23:28:24.882613
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_051T01_9000001242cztM0_level2_bc.evt modeM0/AS1A03_051T01_9000001242cztM0_level2_quad_clean.evt
Size (bytes)2,224,206,720762,768,000
Size2.1 GB 727.4 MB
Events in quadrant A17,182,1264,774,476
Events in quadrant B12,676,5404,865,846
Events in quadrant C13,904,3784,726,542
Events in quadrant D19,466,8754,580,303

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01399400
B01255940
C01335680
D01445920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012420
B012440
C012360
D012420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6056911771.943238%
B605775440.898031%
C6056314992.475109%
D6055316072.653873%

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 76152 60803 170 170 0.22% 0.28%
B 76152 60808 4 4 0.01% 0.01%
C 76152 60795 66 66 0.09% 0.11%
D 76152 60791 380 380 0.50% 0.63%

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 3285328 4887.38 3064 3001 671.6
A 5 16 1821661 2707.98 3064 3001 671.6
A 15 174 124350 180.69 3064 3001 671.6
B 0 214 171145 281.1 3107 3016 598.1
B 4 173 148964 244.02 3107 3016 598.1
B 6 51 104131 169.06 3107 3016 598.1
C 4 254 2278072 3535.0 2963 2918 643.6
C 14 234 26410 36.5 2963 2918 643.6
C 13 61 18353 23.98 2963 2918 643.6
D 8 195 2008737 2736.14 2990 2897 733.1
D 1 52 1725139 2349.29 2990 2897 733.1
D 13 104 1589155 2163.79 2990 2897 733.1

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