ASTROSAT CZTI

Data Quality Report

Orbit 36150

Creation date: 2022-08-10T21:31:16.061129
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/AS1T04_069T01_9000005158_36150cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36150cztM0_level2_quad_clean.evt
Size (bytes)1,830,490,560282,381,120
Size1.7 GB 269.3 MB
Events in quadrant A11,471,3421,782,798
Events in quadrant B13,444,0881,788,383
Events in quadrant C12,198,8161,755,606
Events in quadrant D16,743,1301,614,179

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0482607
B0547166
C0496076
D0653146

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04780
B04780
C04780
D04780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23419340.145181%
B234194281.827576%
C234191460.623425%
D2341910344.415218%

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 32292 23424 9 9 0.03% 0.04%
B 32292 23424 257 257 0.80% 1.10%
C 32292 23424 106 106 0.33% 0.45%
D 32292 23424 930 930 2.88% 3.97%

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 641170 1161.37 2750 2697 549.8
A 9 143 66552 116.15 2750 2697 549.8
A 8 144 64281 112.02 2750 2697 549.8
B 5 172 1922703 3722.18 2715 2642 515.8
B 0 213 297875 572.33 2715 2642 515.8
B 0 190 202647 387.72 2715 2642 515.8
C 15 214 988585 1596.02 2659 2673 617.7
C 0 10 545249 878.34 2659 2673 617.7
C 1 208 146999 233.64 2659 2673 617.7
D 1 52 3070440 4805.02 2613 2540 638.5
D 13 249 1940489 3035.26 2613 2540 638.5
D 12 6 392283 610.42 2613 2540 638.5

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