ASTROSAT CZTI

Data Quality Report

Orbit 56609

Creation date: 2026-03-16T03:23:35.631510
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_083T06_9000006558_56609cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56609cztM0_level2_quad_clean.evt
Size (bytes)400,118,40093,286,080
Size381.6 MB 89.0 MB
Events in quadrant A2,915,053625,927
Events in quadrant B3,009,081679,541
Events in quadrant C4,693,134538,642
Events in quadrant D3,702,628540,411

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134132
B0134023
C0186252
D0155182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6308550.871909%
B6307430.681782%
C63076169.766926%
D63071382.188045%

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 7508 6310 29 29 0.39% 0.46%
B 7507 6309 6 6 0.08% 0.10%
C 7507 6309 386 386 5.14% 6.12%
D 7507 6309 125 125 1.67% 1.98%

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 4 95 70128 413.2 681 665 168.1
A 4 249 65909 388.1 681 665 168.1
A 10 251 34220 199.6 681 665 168.1
B 4 21 71651 500.76 679 656 141.8
B 10 247 65851 459.85 679 656 141.8
B 0 153 34292 237.25 679 656 141.8
C 15 219 954000 5512.35 628 622 173.0
C 13 3 417117 2408.14 628 622 173.0
C 15 230 330739 1908.71 628 622 173.0
D 10 199 315719 1744.14 641 611 180.7
D 2 249 224837 1241.1 641 611 180.7
D 6 239 206951 1142.1 641 611 180.7

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