ASTROSAT CZTI

Data Quality Report

Orbit 52604

Creation date: 2025-06-19T14:31:08.940148
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/AS1C09_011T06_9000006478_52604cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52604cztM0_level2_quad_clean.evt
Size (bytes)647,023,68097,312,320
Size617.0 MB 92.8 MB
Events in quadrant A3,725,213652,892
Events in quadrant B6,450,229667,865
Events in quadrant C5,951,810592,195
Events in quadrant D7,267,907533,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164000
B0241730
C0228650
D0266840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7175961.337979%
B71765948.277592%
C71765938.263657%
D717695313.280379%

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 7175 7175 60 60 0.84% 0.84%
B 7176 7176 527 527 7.34% 7.34%
C 7176 7176 612 612 8.53% 8.53%
D 7176 7176 944 944 13.15% 13.15%

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 80 208979 1129.68 733 714 184.4
A 3 114 151383 817.26 733 714 184.4
A 4 249 113877 613.82 733 714 184.4
B 10 128 2503113 16609.3 711 686 150.7
B 4 81 340794 2257.39 711 686 150.7
B 10 254 192690 1274.38 711 686 150.7
C 15 248 1598115 8371.22 688 681 190.8
C 4 5 568693 2976.62 688 681 190.8
C 12 252 344122 1799.77 688 681 190.8
D 6 42 1861109 9801.05 670 641 189.8
D 8 176 772193 4064.58 670 641 189.8
D 12 6 687486 3618.34 670 641 189.8

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