ASTROSAT CZTI

Data Quality Report

Orbit 01235

Creation date: 2024-06-27T14:09:35.046863
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/AS1G04_011T02_9000000226_01235cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01235cztM0_level2_quad_clean.evt
Size (bytes)1,403,951,040103,345,920
Size1.3 GB 98.6 MB
Events in quadrant A8,356,592727,234
Events in quadrant B17,507,690516,988
Events in quadrant C8,465,317698,628
Events in quadrant D7,736,263706,974

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296441
B0573350
C0299980
D0279110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A686640.058258%
B6866334548.718322%
C6866400.582581%
D6866420.611710%

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 6866 6866 280 280 4.08% 4.08%
B 6865 6865 5155 5155 75.09% 75.09%
C 6866 6866 298 298 4.34% 4.34%
D 6866 6866 262 262 3.82% 3.82%

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 12 243 43060 78.31 2154 2172 522.1
A 3 80 27848 49.18 2154 2172 522.1
A 11 79 9656 14.33 2154 2172 522.1
B 2 32 9959279 23186.6 1818 1822 429.4
B 8 4 286018 661.77 1818 1822 429.4
B 5 200 95878 219.01 1818 1822 429.4
C 15 241 374212 667.93 1998 2066 557.2
C 9 52 94304 165.55 1998 2066 557.2
C 10 19 72283 126.03 1998 2066 557.2
D 10 84 230452 375.93 1952 2024 607.6
D 13 70 145549 236.2 1952 2024 607.6
D 1 255 28159 43.01 1952 2024 607.6

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