ASTROSAT CZTI

Data Quality Report

Orbit 35191

Creation date: 2022-04-01T21:42:13.743992
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_020T01_9000005050_35191cztM0_level2.evt modeM0/AS1T05_020T01_9000005050_35191cztM0_level2_quad_clean.evt
Size (bytes)674,887,68055,808,640
Size643.6 MB 53.2 MB
Events in quadrant A2,686,597349,666
Events in quadrant B6,228,029332,150
Events in quadrant C3,344,539338,553
Events in quadrant D7,830,918305,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109983
B0220732
C0129882
D0268722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518170.135109%
B5181121123.373866%
C51811643.165412%
D518183216.058676%

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 7303 5182 2 2 0.03% 0.04%
B 7302 5180 779 779 10.67% 15.04%
C 7303 5182 117 117 1.60% 2.26%
D 7303 5182 1022 1022 13.99% 19.72%

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 10 83 101677 762.01 664 653 132.6
A 13 6 10045 70.84 664 653 132.6
A 13 254 9020 63.11 664 653 132.6
B 5 236 3674130 32828.88 598 586 111.9
B 5 172 151666 1350.14 598 586 111.9
B 4 232 16977 146.48 598 586 111.9
C 0 10 332172 2333.39 625 632 142.1
C 1 23 297529 2089.58 625 632 142.1
C 15 214 215406 1511.59 625 632 142.1
D 8 195 4902608 32937.56 617 603 148.8
D 5 223 141139 944.29 617 603 148.8
D 12 233 109462 731.45 617 603 148.8

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