ASTROSAT CZTI

Data Quality Report

Orbit 35661

Creation date: 2022-05-03T16:25:19.036232
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/AS1C07_001T07_9000005104_35661cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35661cztM0_level2_quad_clean.evt
Size (bytes)1,455,480,000203,590,080
Size1.4 GB 194.2 MB
Events in quadrant A14,464,9421,255,106
Events in quadrant B8,995,7431,308,445
Events in quadrant C8,474,1401,332,937
Events in quadrant D11,096,8971,195,568

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0532774
B0370933
C0343153
D0432463

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1555011927.665595%
B155504512.900322%
C155502161.389068%
D1555013628.758842%

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 19756 15553 809 809 4.09% 5.20%
B 19756 15553 308 308 1.56% 1.98%
C 19756 15553 187 187 0.95% 1.20%
D 19756 15553 1075 1075 5.44% 6.91%

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 15 169 7367134 21102.98 1741 1703 349.0
A 10 83 318118 906.57 1741 1703 349.0
A 13 6 27257 73.21 1741 1703 349.0
B 5 172 1760252 5288.99 1742 1692 332.5
B 5 255 99582 294.41 1742 1692 332.5
B 15 85 82372 242.65 1742 1692 332.5
C 15 214 639235 1612.2 1728 1733 395.4
C 0 10 624492 1574.92 1728 1733 395.4
C 1 23 292418 735.12 1728 1733 395.4
D 10 118 2168992 5402.32 1656 1611 401.2
D 13 249 978688 2435.42 1656 1611 401.2
D 2 249 609350 1514.82 1656 1611 401.2

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