ASTROSAT CZTI

Data Quality Report

Orbit 26422

Creation date: 2024-06-27T19:28:50.093997
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/AS1A09_127T03_9000003820_26422cztM0_level2.evt modeM0/AS1A09_127T03_9000003820_26422cztM0_level2_quad_clean.evt
Size (bytes)580,135,68092,044,800
Size553.3 MB 87.8 MB
Events in quadrant A3,608,296574,777
Events in quadrant B3,780,395584,253
Events in quadrant C3,971,452558,306
Events in quadrant D5,685,592533,304

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158120
B0161490
C0165840
D0220810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77171622.099261%
B77182032.630215%
C77182272.941176%
D77184946.400622%

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 8227 7719 0 0 0.00% 0.00%
B 8228 7720 5 5 0.06% 0.06%
C 8228 7720 17 17 0.21% 0.22%
D 8228 7720 288 288 3.50% 3.73%

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 12 189 16715 84.9 929 906 186.2
A 13 254 12519 62.37 929 906 186.2
A 3 137 8768 42.22 929 906 186.2
B 15 32 31136 171.27 927 903 176.5
B 5 172 30771 169.2 927 903 176.5
B 0 189 29737 163.34 927 903 176.5
C 3 233 168233 797.49 893 900 209.8
C 14 238 143160 678.0 893 900 209.8
C 4 254 111874 528.89 893 900 209.8
D 1 52 1501189 7063.6 885 860 212.4
D 12 233 539795 2537.33 885 860 212.4
D 7 80 179154 839.41 885 860 212.4

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