ASTROSAT CZTI

Data Quality Report

Orbit 37366

Creation date: 2024-06-27T21:39:05.299106
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/AS1T05_048T01_9000005318_37366cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37366cztM0_level2_quad_clean.evt
Size (bytes)635,909,76083,401,920
Size606.5 MB 79.5 MB
Events in quadrant A2,909,227551,579
Events in quadrant B2,900,282561,978
Events in quadrant C3,380,326560,360
Events in quadrant D9,674,918443,657

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122633
B0123922
C0135852
D0328202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5822130.223291%
B5822370.635520%
C5822931.597389%
D5822177830.539334%

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 8808 5824 5 5 0.06% 0.09%
B 8808 5824 24 24 0.27% 0.41%
C 8808 5824 79 79 0.90% 1.36%
D 8808 5824 2110 2110 23.96% 36.23%

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 300763 2236.34 661 648 134.2
A 9 143 18832 135.5 661 648 134.2
A 13 6 17235 123.6 661 648 134.2
B 5 172 126663 986.65 656 639 127.7
B 5 255 72973 566.31 656 639 127.7
B 0 190 30783 236.0 656 639 127.7
C 1 23 371916 2479.23 641 645 149.8
C 15 214 244826 1630.57 641 645 149.8
C 15 208 147080 977.85 641 645 149.8
D 12 235 5298099 37408.04 583 568 141.6
D 12 227 1630678 11510.88 583 568 141.6
D 2 249 177718 1250.93 583 568 141.6

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