ASTROSAT CZTI

Data Quality Report

Orbit 12372

Creation date: 2024-06-27T16:26:16.660227
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_072T03_9000001836_12372cztM0_level2.evt modeM0/AS1G08_072T03_9000001836_12372cztM0_level2_quad_clean.evt
Size (bytes)575,602,56087,612,480
Size548.9 MB 83.6 MB
Events in quadrant A3,568,671562,445
Events in quadrant B5,407,555553,191
Events in quadrant C3,815,141557,145
Events in quadrant D4,200,407526,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147863
B0203992
C0155792
D0168312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6502410.630575%
B65024446.828668%
C65021161.784066%
D65023044.675484%

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 7637 6502 5 5 0.07% 0.08%
B 7638 6504 386 386 5.05% 5.93%
C 7637 6503 119 119 1.56% 1.83%
D 7637 6503 283 283 3.71% 4.35%

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 1 162 163370 1035.47 766 751 157.0
A 1 178 90654 572.46 766 751 157.0
A 1 161 77838 490.85 766 751 157.0
B 2 32 1537659 10662.13 763 743 144.1
B 2 48 533597 3696.6 763 743 144.1
B 4 239 228123 1577.42 763 743 144.1
C 15 208 883742 5063.23 750 756 174.4
C 14 234 6785 34.57 750 756 174.4
C 13 61 5486 27.12 750 756 174.4
D 1 52 1300853 7365.22 731 711 176.5
D 10 199 52725 294.66 731 711 176.5
D 13 104 35722 198.34 731 711 176.5

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