ASTROSAT CZTI

Data Quality Report

Orbit 51470

Creation date: 2025-04-04T06:11:25.741960
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/AS1A13_090T01_9000006458_51470cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51470cztM0_level2_quad_clean.evt
Size (bytes)782,176,320102,545,280
Size745.9 MB 97.8 MB
Events in quadrant A6,570,665691,384
Events in quadrant B5,448,466732,687
Events in quadrant C4,053,553719,706
Events in quadrant D12,265,633409,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251291
B0216581
C0179722
D0419221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A793187311.007439%
B793284110.602622%
C79311081.361745%
D7931335342.277140%

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 8496 7932 432 432 5.08% 5.45%
B 8497 7933 242 242 2.85% 3.05%
C 8496 7932 66 66 0.78% 0.83%
D 8496 7932 2763 2763 32.52% 34.83%

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 3 924465 4541.23 832 811 203.4
A 8 63 420154 2061.74 832 811 203.4
A 8 47 410315 2013.37 832 811 203.4
B 12 32 967992 5437.87 825 796 177.9
B 4 206 296937 1665.0 825 796 177.9
B 10 254 215619 1207.8 825 796 177.9
C 13 3 378931 1613.61 851 845 234.3
C 15 219 50944 213.81 851 845 234.3
C 10 19 50348 211.27 851 845 234.3
D 8 176 9023487 51878.74 622 600 173.9
D 3 12 304110 1745.09 622 600 173.9
D 6 42 87795 501.34 622 600 173.9

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