ASTROSAT CZTI

Data Quality Report

Orbit 20520

Creation date: 2024-06-27T18:16:21.582616
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/AS1A05_115T03_9000003032_20520cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20520cztM0_level2_quad_clean.evt
Size (bytes)474,206,40090,037,440
Size452.2 MB 85.9 MB
Events in quadrant A2,950,016594,743
Events in quadrant B3,612,675591,482
Events in quadrant C2,928,193567,770
Events in quadrant D4,450,403540,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128950
B0149380
C0127550
D0174310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6193380.613596%
B6194851.372296%
C6194641.033258%
D61942494.020019%

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 7198 6193 6 6 0.08% 0.10%
B 7199 6194 18 18 0.25% 0.29%
C 7199 6194 0 0 0.00% 0.00%
D 7199 6194 181 181 2.51% 2.92%

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 96 29546 188.27 753 736 153.0
A 11 29 18588 116.66 753 736 153.0
A 0 226 6341 36.63 753 736 153.0
B 7 220 219611 1535.64 746 727 142.5
B 0 189 193681 1353.72 746 727 142.5
B 0 197 97372 678.04 746 727 142.5
C 14 238 111896 660.31 718 724 168.4
C 0 207 10897 60.42 718 724 168.4
C 13 61 5037 25.62 718 724 168.4
D 7 38 773247 4312.46 726 703 179.1
D 7 238 322210 1794.7 726 703 179.1
D 13 153 168427 936.26 726 703 179.1

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