ASTROSAT CZTI

Data Quality Report

Orbit 55198

Creation date: 2025-12-11T05:03:58.632809
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/AS1A14_022T16_9000006532_55198cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55198cztM0_level2_quad_clean.evt
Size (bytes)512,870,40090,089,280
Size489.1 MB 85.9 MB
Events in quadrant A7,086,399481,931
Events in quadrant B2,984,941678,023
Events in quadrant C3,389,310596,431
Events in quadrant D5,028,568526,008

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254042
B0135652
C0143902
D0195203

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6376159825.062735%
B6376420.658720%
C6376590.925345%
D63755037.890196%

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 7556 6377 1405 1405 18.59% 22.03%
B 7556 6377 23 23 0.30% 0.36%
C 7556 6377 41 41 0.54% 0.64%
D 7555 6376 416 416 5.51% 6.52%

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 3 45 3925261 27443.07 578 564 143.0
A 12 115 648332 4529.46 578 564 143.0
A 3 14 93157 647.45 578 564 143.0
B 5 185 200517 1360.55 677 650 146.9
B 4 81 58241 392.04 677 650 146.9
B 10 247 22874 151.28 677 650 146.9
C 1 16 405116 2205.6 666 662 183.4
C 13 3 95612 517.79 666 662 183.4
C 12 249 95372 516.48 666 662 183.4
D 2 249 1002253 5518.04 637 607 181.5
D 11 129 956309 5264.93 637 607 181.5
D 7 96 213746 1174.18 637 607 181.5

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