ASTROSAT CZTI

Data Quality Report

Orbit 25606

Creation date: 2024-06-27T19:19:28.102734
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_148T02_9000003728_25606cztM0_level2.evt modeM0/AS1A07_148T02_9000003728_25606cztM0_level2_quad_clean.evt
Size (bytes)535,622,40077,083,200
Size510.8 MB 73.5 MB
Events in quadrant A4,311,277487,076
Events in quadrant B3,422,853505,226
Events in quadrant C3,365,819466,281
Events in quadrant D4,702,332443,319

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172490
B0136670
C0134940
D0181640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6198500.806712%
B6198540.871249%
C6198871.403679%
D61981512.436270%

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 7563 6200 1 1 0.01% 0.02%
B 7563 6200 2 2 0.03% 0.03%
C 7563 6200 0 0 0.00% 0.00%
D 7563 6200 101 101 1.34% 1.63%

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 906746 5335.78 859 847 169.8
A 6 16 71274 414.82 859 847 169.8
A 9 130 17561 98.45 859 847 169.8
B 0 219 21187 125.82 862 845 161.7
B 12 111 18463 108.97 862 845 161.7
B 11 111 16610 97.51 862 845 161.7
C 14 238 133830 704.23 815 824 188.9
C 3 233 48677 253.37 815 824 188.9
C 2 16 7025 32.83 815 824 188.9
D 1 52 1320974 6764.66 809 788 195.2
D 8 195 153912 784.61 809 788 195.2
D 7 238 80246 407.14 809 788 195.2

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