ASTROSAT CZTI

Data Quality Report

Orbit 34221

Creation date: 2022-01-26T08:46:02.984480
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/AS1T05_003T01_9000004886_34221cztM0_level2.evt modeM0/AS1T05_003T01_9000004886_34221cztM0_level2_quad_clean.evt
Size (bytes)396,930,24051,223,680
Size378.5 MB 48.9 MB
Events in quadrant A1,919,569337,694
Events in quadrant B5,353,915286,127
Events in quadrant C1,953,269353,102
Events in quadrant D2,560,877330,204

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079222
B0182941
C076891
D099221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A344190.261552%
B3441123635.919791%
C3441671.947108%
D34411805.231037%

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 5563 3442 4 4 0.07% 0.12%
B 5563 3442 1044 1044 18.77% 30.33%
C 5563 3442 43 43 0.77% 1.25%
D 5563 3442 143 143 2.57% 4.15%

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 47 281999 3340.17 416 408 84.3
A 10 83 11746 134.49 416 408 84.3
A 13 6 9142 103.6 416 408 84.3
B 5 31 2366139 33595.12 370 361 70.4
B 5 15 916807 13013.95 370 361 70.4
B 5 172 415912 5901.01 370 361 70.4
C 15 214 146554 1568.33 406 410 93.2
C 0 10 143152 1531.82 406 410 93.2
C 4 254 65540 698.93 406 410 93.2
D 7 80 442840 4505.6 398 388 98.2
D 8 195 337935 3437.33 398 388 98.2
D 10 118 94035 953.63 398 388 98.2

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