ASTROSAT CZTI

Data Quality Report

Orbit 21666

Creation date: 2024-06-27T18:30:50.545819
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_002T02_9000003206_21666cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21666cztM0_level2_quad_clean.evt
Size (bytes)510,033,60095,719,680
Size486.4 MB 91.3 MB
Events in quadrant A3,045,547631,104
Events in quadrant B3,719,603642,536
Events in quadrant C3,262,234618,534
Events in quadrant D4,986,140561,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132422
B0152362
C0138842
D0192472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6378290.454688%
B63771402.195390%
C6377691.082013%
D63775148.060216%

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 7588 6379 0 0 0.00% 0.00%
B 7587 6378 76 76 1.00% 1.19%
C 7587 6378 6 6 0.08% 0.09%
D 7587 6378 466 466 6.14% 7.31%

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 13 254 10070 58.98 789 773 157.6
A 0 226 6606 37.01 789 773 157.6
A 3 137 6512 36.41 789 773 157.6
B 3 64 497159 3358.36 791 772 147.8
B 0 230 55016 366.99 791 772 147.8
B 4 171 19155 124.37 791 772 147.8
C 9 54 135075 746.47 768 773 179.9
C 14 238 122176 674.78 768 773 179.9
C 10 22 9333 47.58 768 773 179.9
D 1 52 986673 5450.07 749 726 180.9
D 7 223 568758 3139.94 749 726 180.9
D 7 238 369791 2040.1 749 726 180.9

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