ASTROSAT CZTI

Data Quality Report

Orbit 14520

Creation date: 2024-06-27T16:56:20.992564
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_066T01_9000002138_14520cztM0_level2.evt modeM0/AS1G08_066T01_9000002138_14520cztM0_level2_quad_clean.evt
Size (bytes)489,631,680102,199,680
Size466.9 MB 97.5 MB
Events in quadrant A3,337,946655,704
Events in quadrant B3,618,457668,458
Events in quadrant C3,567,591661,420
Events in quadrant D3,836,249629,127

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144713
B0152402
C0147102
D0160212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6895490.710660%
B6895831.203771%
C6895470.681653%
D68952263.277737%

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 9066 6898 1 1 0.01% 0.01%
B 9066 6898 4 4 0.04% 0.06%
C 9066 6898 0 0 0.00% 0.00%
D 9066 6896 130 130 1.43% 1.89%

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 8 15 21831 121.36 852 832 173.0
A 12 189 12273 66.12 852 832 173.0
A 0 23 9735 51.45 852 832 173.0
B 0 189 123706 753.85 855 833 163.0
B 0 219 53274 321.74 855 833 163.0
B 3 209 47819 288.27 855 833 163.0
C 3 233 267375 1357.59 845 851 196.3
C 0 207 6488 28.71 845 851 196.3
C 13 61 6116 26.82 845 851 196.3
D 10 199 553549 2681.5 829 809 206.1
D 2 120 76876 369.02 829 809 206.1
D 13 172 33725 159.68 829 809 206.1

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