ASTROSAT CZTI

Data Quality Report

Orbit 22278

Creation date: 2024-06-27T18:38:54.806712
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/AS1A07_018T08_9000003296_22278cztM0_level2.evt modeM0/AS1A07_018T08_9000003296_22278cztM0_level2_quad_clean.evt
Size (bytes)475,482,24088,551,360
Size453.5 MB 84.4 MB
Events in quadrant A3,380,388571,391
Events in quadrant B3,507,137581,200
Events in quadrant C3,505,791543,326
Events in quadrant D3,566,265533,384

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137612
B0141832
C0142432
D0146782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64771201.852710%
B64771742.686429%
C64771842.840821%
D64771091.682878%

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 7612 6478 0 0 0.00% 0.00%
B 7612 6477 11 11 0.14% 0.17%
C 7612 6478 28 28 0.37% 0.43%
D 7612 6478 10 10 0.13% 0.15%

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 13 254 9128 47.48 877 863 174.1
A 0 226 7592 38.65 877 863 174.1
A 3 137 7313 37.05 877 863 174.1
B 4 171 97785 584.66 871 851 165.8
B 12 111 19679 113.56 871 851 165.8
B 11 111 17950 103.13 871 851 165.8
C 10 22 157113 815.25 823 830 191.7
C 14 238 132386 686.26 823 830 191.7
C 0 10 7454 34.55 823 830 191.7
D 1 52 207533 1035.39 835 814 199.7
D 12 235 109631 545.03 835 814 199.7
D 2 136 51100 251.87 835 814 199.7

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