ASTROSAT CZTI

Data Quality Report

Orbit 58732

Creation date: 2026-08-05T23:06:38.322900
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_004T06_9000006594_58732cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58732cztM0_level2_quad_clean.evt
Size (bytes)411,344,64089,720,640
Size392.3 MB 85.6 MB
Events in quadrant A2,807,983598,550
Events in quadrant B3,170,755637,033
Events in quadrant C2,999,440574,859
Events in quadrant D5,782,422488,316

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127685
B0135683
C0131965
D02137944

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59911101.836087%
B5993961.601869%
C5993771.284832%
D598882313.744155%

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 7048 5993 26 26 0.37% 0.43%
B 7049 5994 16 16 0.23% 0.27%
C 7049 5995 29 29 0.41% 0.48%
D 7047 5992 735 735 10.43% 12.27%

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 15 233 121598 736.85 665 648 164.1
A 12 114 48233 289.9 665 648 164.1
A 3 14 27414 163.06 665 648 164.1
B 8 234 228634 1636.19 652 629 139.4
B 6 255 56636 401.91 652 629 139.4
B 10 16 55010 390.24 652 629 139.4
C 13 3 165483 923.88 653 646 178.4
C 7 87 134886 752.39 653 646 178.4
C 12 252 50266 278.11 653 646 178.4
D 11 129 2998375 17052.63 619 590 175.8
D 14 49 72523 409.18 619 590 175.8
D 3 12 60081 338.41 619 590 175.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct