ASTROSAT CZTI

Data Quality Report

Orbit 32146

Creation date: 2024-06-27T20:36:58.411680
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_051T01_9000004686_32146cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32146cztM0_level2_quad_clean.evt
Size (bytes)550,500,48075,389,760
Size525.0 MB 71.9 MB
Events in quadrant A2,653,266494,399
Events in quadrant B5,679,873476,619
Events in quadrant C2,889,159478,355
Events in quadrant D5,080,651451,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113161
B0208701
C0119801
D0191071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5455220.403300%
B54564327.917889%
C54561132.071114%
D54562224.068915%

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 6560 5456 0 0 0.00% 0.00%
B 6561 5457 199 199 3.03% 3.65%
C 6561 5457 34 34 0.52% 0.62%
D 6561 5457 205 205 3.12% 3.76%

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 6 21505 152.83 677 667 136.3
A 12 189 14372 100.52 677 667 136.3
A 13 254 11124 76.69 677 667 136.3
B 6 159 1575581 12635.92 659 643 124.6
B 10 245 1116226 8950.46 659 643 124.6
B 5 172 169680 1356.2 659 643 124.6
C 0 10 181818 1197.11 643 648 151.3
C 14 238 110194 723.84 643 648 151.3
C 3 233 57469 375.45 643 648 151.3
D 8 195 1932622 12589.11 640 623 153.5
D 12 233 467737 3043.76 640 623 153.5
D 12 218 99094 641.65 640 623 153.5

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