ASTROSAT CZTI

Data Quality Report

Orbit 20160920_G05_240T01_9000000674_level2

Creation date: 2025-11-06T14:43:12.325303
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/AS1G05_240T01_9000000674cztM0_level2.fits modeM0/AS1G05_240T01_9000000674cztM0_level2_quad_clean.evt
Size (bytes)1,637,026,5601,722,041,280
Size1.5 GB 1.6 GB
Events in quadrant A9,758,13010,381,906
Events in quadrant B9,536,05210,577,837
Events in quadrant C9,681,6029,866,886
Events in quadrant D8,306,0409,038,080

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03765070
B03858480
C03861380
D03997780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036560
B036620
C036440
D036540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02610
B02640
C02660
D02650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17952028681.597594%
B17948130921.722745%
C17902718221.017724%
D17943536502.034163%

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 226382 181837 0 0 0.00% 0.00%
B 226382 181830 0 0 0.00% 0.00%
C 226382 181500 0 0 0.00% 0.00%
D 226382 181742 0 0 0.00% 0.00%

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 0 29 9365 10.68 2537 2355 656.1
A 7 110 8322 9.09 2537 2355 656.1
A 0 30 7364 7.63 2537 2355 656.1
B 2 9 8320 11.77 2513 2384 504.2
B 12 226 6531 8.22 2513 2384 504.2
B 3 17 6461 8.09 2513 2384 504.2
C 1 80 7133 7.0 2558 2359 681.9
C 1 81 7045 6.87 2558 2359 681.9
C 12 241 6858 6.6 2558 2359 681.9
D 11 82 6353 6.68 2365 2146 629.8
D 3 14 6157 6.37 2365 2146 629.8
D 6 231 5989 6.1 2365 2146 629.8

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