ASTROSAT CZTI

Data Quality Report

Orbit 22505

Creation date: 2024-06-27T18:42:02.327438
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/AS1A07_144T02_9000003340_22505cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22505cztM0_level2_quad_clean.evt
Size (bytes)427,377,60069,552,000
Size407.6 MB 66.3 MB
Events in quadrant A3,070,520421,793
Events in quadrant B3,117,531430,095
Events in quadrant C3,149,772415,976
Events in quadrant D3,187,559408,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129411
B0130621
C0131162
D0134351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6149490.796878%
B6150450.731707%
C6149781.268499%
D6149420.683038%

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 7264 6149 0 0 0.00% 0.00%
B 7265 6150 0 0 0.00% 0.00%
C 7265 6150 0 0 0.00% 0.00%
D 7265 6150 6 6 0.08% 0.10%

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 13 254 9736 56.34 794 779 159.0
A 3 1 7762 43.93 794 779 159.0
A 0 226 6856 38.23 794 779 159.0
B 12 111 17815 113.11 788 768 150.7
B 11 111 15972 100.88 788 768 150.7
B 0 190 14800 93.1 788 768 150.7
C 14 238 121336 674.33 769 775 178.8
C 0 10 16506 87.99 769 775 178.8
C 10 22 16371 87.23 769 775 178.8
D 1 52 143144 747.95 780 757 190.4
D 13 172 31105 159.42 780 757 190.4
D 2 234 25384 129.36 780 757 190.4

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