ASTROSAT CZTI

Data Quality Report

Orbit 36114

Creation date: 2022-08-10T12:33:43.967840
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/AS1T04_069T01_9000005158_36114cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36114cztM0_level2_quad_clean.evt
Size (bytes)454,475,52061,992,000
Size433.4 MB 59.1 MB
Events in quadrant A2,522,760401,119
Events in quadrant B4,021,960370,144
Events in quadrant C2,987,995384,812
Events in quadrant D3,884,833362,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106773
B0152422
C0119132
D0149072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510290.176401%
B510255810.936887%
C5102721.411211%
D51021813.547628%

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 6984 5103 2 2 0.03% 0.04%
B 6984 5103 447 447 6.40% 8.76%
C 6984 5103 64 64 0.92% 1.25%
D 6984 5103 165 165 2.36% 3.23%

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 10 83 168226 1374.6 603 594 121.9
A 13 6 12101 94.36 603 594 121.9
A 13 254 8020 60.89 603 594 121.9
B 5 172 1275626 11574.75 571 556 110.2
B 5 236 426108 3863.05 571 556 110.2
B 0 213 29694 264.51 571 556 110.2
C 0 10 246723 1814.96 579 583 135.6
C 1 23 234288 1723.26 579 583 135.6
C 15 214 230084 1692.27 579 583 135.6
D 1 52 678731 4807.09 572 557 141.1
D 12 17 360102 2548.56 572 557 141.1
D 12 6 191074 1350.44 572 557 141.1

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