ASTROSAT CZTI

Data Quality Report

Orbit 12998

Creation date: 2024-06-27T16:34:54.399391
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/AS1G08_055T01_9000001912_12998cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_12998cztM0_level2_quad_clean.evt
Size (bytes)481,092,48094,072,320
Size458.8 MB 89.7 MB
Events in quadrant A3,082,017623,439
Events in quadrant B4,484,773593,744
Events in quadrant C2,920,251632,104
Events in quadrant D3,683,276588,184

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125572
B0169831
C0121661
D0146951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5883580.985892%
B588364210.912800%
C5883540.917899%
D58832444.147544%

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 7204 5885 5 5 0.07% 0.08%
B 7204 5885 373 373 5.18% 6.34%
C 7204 5885 0 0 0.00% 0.00%
D 7204 5885 150 150 2.08% 2.55%

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 12 189 86991 572.34 750 735 150.7
A 9 143 52672 344.62 750 735 150.7
A 1 162 30147 195.16 750 735 150.7
B 4 239 1460338 11251.98 708 693 129.7
B 0 219 121257 929.39 708 693 129.7
B 3 209 47050 357.35 708 693 129.7
C 13 61 5417 27.44 748 751 170.0
C 14 234 3477 16.03 748 751 170.0
C 8 222 1993 7.31 748 751 170.0
D 1 52 727999 4220.08 731 712 172.3
D 13 122 118006 680.6 731 712 172.3
D 8 195 63674 365.34 731 712 172.3

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