ASTROSAT CZTI

Data Quality Report

Orbit 18092

Creation date: 2024-06-27T17:45:19.760159
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/AS1T03_080T01_9000002686_18092cztM0_level2.evt modeM0/AS1T03_080T01_9000002686_18092cztM0_level2_quad_clean.evt
Size (bytes)415,376,640126,190,080
Size396.1 MB 120.3 MB
Events in quadrant A2,940,040876,104
Events in quadrant B3,060,080869,094
Events in quadrant C2,945,702835,016
Events in quadrant D3,235,570832,596

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122581
B0126151
C0121861
D0132941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5861611.040778%
B58621021.740020%
C5862691.177073%
D58621462.490618%

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 7146 5862 0 0 0.00% 0.00%
B 7147 5863 23 23 0.32% 0.39%
C 7147 5863 0 0 0.00% 0.00%
D 7147 5863 107 107 1.50% 1.83%

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 15 174 19962 128.73 757 744 149.3
A 0 226 6744 40.19 757 744 149.3
A 4 2 6708 39.95 757 744 149.3
B 10 247 95159 696.22 737 720 135.6
B 4 171 40203 291.07 737 720 135.6
B 12 111 15628 109.9 737 720 135.6
C 14 238 114570 695.83 711 714 163.6
C 3 233 49092 295.66 711 714 163.6
C 13 61 4991 26.14 711 714 163.6
D 11 176 407024 2297.27 733 711 176.9
D 2 234 23391 128.23 733 711 176.9
D 2 152 19316 105.19 733 711 176.9

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