ASTROSAT CZTI

Data Quality Report

Orbit 09050

Creation date: 2024-06-27T15:40:36.406914
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/AS1A03_046T01_9000001260_09050cztM0_level2.evt modeM0/AS1A03_046T01_9000001260_09050cztM0_level2_quad_clean.evt
Size (bytes)509,981,760104,192,640
Size486.4 MB 99.4 MB
Events in quadrant A4,123,350661,171
Events in quadrant B3,697,996664,802
Events in quadrant C3,440,375654,320
Events in quadrant D3,663,444643,238

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01726450
B01617140
C01582145
D01640742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76431842.407432%
B76462062.694219%
C7643961.256051%
D76481381.804393%

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 7803 7664 6 6 0.08% 0.08%
B 7803 7666 6 6 0.08% 0.08%
C 7803 7666 1 1 0.01% 0.01%
D 7803 7664 39 39 0.50% 0.51%

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 5 522110 2901.83 892 868 179.6
A 5 16 70375 386.96 892 868 179.6
A 1 162 49721 271.97 892 868 179.6
B 10 16 134489 786.87 893 870 169.8
B 12 111 18614 104.49 893 870 169.8
B 0 214 15400 85.57 893 870 169.8
C 14 234 31755 153.6 867 869 201.1
C 8 128 14602 68.3 867 869 201.1
C 8 112 6928 30.13 867 869 201.1
D 2 14 234119 1062.64 866 843 219.5
D 6 225 69054 310.72 866 843 219.5
D 2 234 32473 144.08 866 843 219.5

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