ASTROSAT CZTI

Data Quality Report

Orbit 55432

Creation date: 2025-12-27T10:31:32.913944
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_099T01_9000006536_55432cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55432cztM0_level2_quad_clean.evt
Size (bytes)507,758,40093,608,640
Size484.2 MB 89.3 MB
Events in quadrant A2,806,788642,766
Events in quadrant B3,232,221681,910
Events in quadrant C2,976,638604,011
Events in quadrant D9,285,028461,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130842
B0141411
C0135911
D0319811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6369921.444497%
B63701302.040816%
C6370741.161695%
D6370160525.196232%

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 7514 6370 1 1 0.01% 0.02%
B 7515 6371 28 28 0.37% 0.44%
C 7515 6371 8 8 0.11% 0.13%
D 7515 6371 1522 1522 20.25% 23.89%

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 12 115 41883 240.12 693 676 171.6
A 4 3 26170 148.56 693 676 171.6
A 14 235 20491 115.47 693 676 171.6
B 5 185 116305 803.86 679 655 143.9
B 9 254 111664 771.6 679 655 143.9
B 7 252 106029 732.44 679 655 143.9
C 13 3 108649 582.41 675 669 185.4
C 9 237 74284 397.06 675 669 185.4
C 12 252 56201 299.52 675 669 185.4
D 11 129 5945783 33628.06 624 595 176.8
D 8 48 318709 1799.36 624 595 176.8
D 8 160 162735 917.12 624 595 176.8

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