ASTROSAT CZTI

Data Quality Report

Orbit 35545

Creation date: 2022-04-26T10:03:50.564395
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/AS1A11_046T08_9000005088_35545cztM0_level2.evt modeM0/AS1A11_046T08_9000005088_35545cztM0_level2_quad_clean.evt
Size (bytes)530,449,92094,377,600
Size505.9 MB 90.0 MB
Events in quadrant A3,442,556586,930
Events in quadrant B3,680,997597,139
Events in quadrant C3,780,769599,927
Events in quadrant D4,661,836562,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149642
B0157542
C0153732
D0185402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A735080.108844%
B7350791.074830%
C7350230.312925%
D73502213.006803%

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 10038 7352 0 0 0.00% 0.00%
B 10038 7352 40 40 0.40% 0.54%
C 10038 7352 16 16 0.16% 0.22%
D 10038 7352 159 159 1.58% 2.16%

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 172089 1011.57 837 818 169.3
A 13 6 19805 112.14 837 818 169.3
A 15 169 15617 87.41 837 818 169.3
B 5 172 356307 2215.47 830 807 160.5
B 12 111 20016 119.71 830 807 160.5
B 11 111 17637 104.88 830 807 160.5
C 15 214 328755 1741.85 818 825 188.3
C 0 10 185643 981.69 818 825 188.3
C 14 67 56803 297.34 818 825 188.3
D 10 118 305077 1528.78 809 784 199.0
D 8 195 291795 1462.05 809 784 199.0
D 2 250 202808 1014.98 809 784 199.0

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