ASTROSAT CZTI

Data Quality Report

Orbit 02950

Creation date: 2024-06-27T14:22:36.512214
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/AS1G05_238T04_9000000416_02950cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02950cztM0_level2_common_clean.evt
Size (bytes)461,923,20045,792,000
Size440.5 MB 43.7 MB
Events in quadrant A2,719,970261,849
Events in quadrant B2,913,220259,441
Events in quadrant C2,632,947255,841
Events in quadrant D5,364,539239,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115673
B0121222
C0114552
D0195592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5280500.946970%
B52801352.556818%
C5280280.530303%
D528083315.776515%

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 9590 5282 38 38 0.40% 0.72%
B 9590 5282 123 123 1.28% 2.33%
C 9590 5282 17 17 0.18% 0.32%
D 9590 5282 654 654 6.82% 12.38%

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 14 238 269558 2262.7 593 581 118.9
A 8 15 72706 606.73 593 581 118.9
A 0 31 32034 264.59 593 581 118.9
B 2 249 416933 3616.5 598 585 115.1
B 3 27 62078 534.14 598 585 115.1
B 0 219 33527 286.14 598 585 115.1
C 1 192 141062 1057.5 569 571 132.9
C 6 80 88375 660.91 569 571 132.9
C 0 219 54533 406.18 569 571 132.9
D 7 80 1642919 12943.32 528 516 126.9
D 1 31 406273 3197.66 528 516 126.9
D 14 113 330694 2602.04 528 516 126.9

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
Veto Counter