ASTROSAT CZTI

Data Quality Report

Orbit 11960

Creation date: 2024-06-27T16:20:35.482493
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/AS1A04_124T01_9000001766_11960cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11960cztM0_level2_quad_clean.evt
Size (bytes)499,777,920127,200,960
Size476.6 MB 121.3 MB
Events in quadrant A3,697,225846,204
Events in quadrant B3,961,288860,889
Events in quadrant C3,054,611843,023
Events in quadrant D3,938,331805,839

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159552
B0166831
C0145381
D0170091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71321161.626472%
B71321872.621985%
C7132240.336511%
D71321872.621985%

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 7338 7133 10 10 0.14% 0.14%
B 7338 7134 71 71 0.97% 1.00%
C 7338 7134 2 2 0.03% 0.03%
D 7338 7134 119 119 1.62% 1.67%

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 6 254 240718 1461.84 803 785 164.1
A 1 162 113582 687.24 803 785 164.1
A 1 178 59989 360.71 803 785 164.1
B 4 239 538397 3478.37 806 786 154.6
B 10 244 103626 665.38 806 786 154.6
B 15 204 102866 660.46 806 786 154.6
C 0 207 9882 50.6 779 782 179.9
C 8 222 7288 36.17 779 782 179.9
C 13 61 5947 28.72 779 782 179.9
D 1 52 368302 1848.22 763 744 198.9
D 8 195 210050 1052.47 763 744 198.9
D 13 122 141275 706.64 763 744 198.9

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