ASTROSAT CZTI

Data Quality Report

Orbit 31882

Creation date: 2024-06-27T20:33:50.142129
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/AS1A10_109T01_9000004646_31882cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31882cztM0_level2_quad_clean.evt
Size (bytes)459,063,36079,053,120
Size437.8 MB 75.4 MB
Events in quadrant A2,726,487517,425
Events in quadrant B4,314,978511,420
Events in quadrant C3,007,435490,731
Events in quadrant D3,468,234477,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116971
B0170871
C0125631
D0141621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5678160.281789%
B5679571.003698%
C56791322.324353%
D56791803.169572%

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 5678 5678 0 0 0.00% 0.00%
B 5679 5679 0 0 0.00% 0.00%
C 5679 5679 50 50 0.88% 0.88%
D 5679 5679 183 183 3.22% 3.22%

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 11462 75.85 703 693 142.0
A 13 6 9078 59.06 703 693 142.0
A 3 137 7261 46.26 703 693 142.0
B 6 159 1555080 11564.29 692 676 134.4
B 12 111 16779 119.8 692 676 134.4
B 11 111 15307 108.85 692 676 134.4
C 15 208 139910 870.32 672 678 160.0
C 14 238 112089 696.41 672 678 160.0
C 3 233 83801 519.59 672 678 160.0
D 12 218 480561 2986.4 674 659 160.7
D 8 195 297947 1850.01 674 659 160.7
D 2 250 65054 400.73 674 659 160.7

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