ASTROSAT CZTI

Data Quality Report

Orbit 25677

Creation date: 2024-06-27T19:20:18.750668
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_043T01_9000003744_25677cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25677cztM0_level2_quad_clean.evt
Size (bytes)478,494,72098,161,920
Size456.3 MB 93.6 MB
Events in quadrant A3,342,198655,400
Events in quadrant B3,409,415672,872
Events in quadrant C3,230,838620,985
Events in quadrant D4,089,286592,061

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136500
B0139610
C0133400
D0163480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6182200.323520%
B6181460.744216%
C6181621.003074%
D6181500.808931%

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 7517 6183 0 0 0.00% 0.00%
B 7516 6182 7 7 0.09% 0.11%
C 7516 6182 0 0 0.00% 0.00%
D 7516 6182 36 36 0.48% 0.58%

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 8 192 116713 701.46 836 821 165.2
A 13 254 9216 50.81 836 821 165.2
A 0 226 7319 39.33 836 821 165.2
B 3 112 98350 620.98 836 820 157.1
B 12 111 18403 111.95 836 820 157.1
B 0 245 17048 103.32 836 820 157.1
C 14 238 128907 701.28 790 801 182.7
C 3 233 18146 94.95 790 801 182.7
C 13 61 5586 26.19 790 801 182.7
D 1 52 547026 2847.33 789 768 191.8
D 8 195 450499 2344.19 789 768 191.8
D 13 104 49749 255.31 789 768 191.8

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