ASTROSAT CZTI

Data Quality Report

Orbit 14969

Creation date: 2024-06-27T17:01:57.367511
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/AS1T02_056T01_9000002210_14969cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14969cztM0_level2_quad_clean.evt
Size (bytes)614,419,200104,958,720
Size586.0 MB 100.1 MB
Events in quadrant A3,717,542691,387
Events in quadrant B4,279,520677,411
Events in quadrant C3,469,401673,165
Events in quadrant D6,660,236641,909

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153093
B0171242
C0146132
D0247152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71011221.718068%
B71012884.055767%
C7101731.028024%
D710191512.885509%

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 7882 7103 11 11 0.14% 0.15%
B 7882 7103 140 140 1.78% 1.97%
C 7882 7103 0 0 0.00% 0.00%
D 7882 7103 820 820 10.40% 11.54%

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 110347 612.98 877 857 178.6
A 13 248 69345 383.43 877 857 178.6
A 1 162 65389 361.28 877 857 178.6
B 3 64 443765 2714.88 857 836 163.1
B 0 228 154242 940.28 857 836 163.1
B 10 16 144630 881.37 857 836 163.1
C 3 233 176321 902.05 843 846 194.5
C 7 247 8189 37.75 843 846 194.5
C 13 61 6030 26.65 843 846 194.5
D 7 223 3405797 15975.44 812 794 213.1
D 13 249 63879 295.98 812 794 213.1
D 10 70 41272 189.91 812 794 213.1

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