ASTROSAT CZTI

Data Quality Report

Orbit 04039

Creation date: 2024-06-27T14:36:38.856427
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/AS1G05_246T03_9000000516_04039cztM0_level2.evt modeM0/AS1G05_246T03_9000000516_04039cztM0_level2_quad_clean.evt
Size (bytes)423,564,48077,198,400
Size403.9 MB 73.6 MB
Events in quadrant A3,560,870468,122
Events in quadrant B3,020,593485,681
Events in quadrant C2,781,523484,151
Events in quadrant D3,036,452460,104

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149885
B0133576
C0128714
D01380210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62961712.716010%
B6295430.683082%
C6296170.270013%
D6295500.794281%

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 7567 6298 87 87 1.15% 1.38%
B 7567 6298 19 19 0.25% 0.30%
C 7567 6298 1 1 0.01% 0.02%
D 7567 6298 42 42 0.56% 0.67%

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 0 50 313979 2168.74 704 687 144.5
A 8 15 230496 1590.84 704 687 144.5
A 0 199 190254 1312.27 704 687 144.5
B 10 16 95193 685.99 726 709 137.7
B 14 167 39310 280.26 726 709 137.7
B 15 204 37213 265.03 726 709 137.7
C 9 144 15969 93.6 703 707 163.1
C 1 16 14953 87.37 703 707 163.1
C 13 61 5985 32.37 703 707 163.1
D 2 232 154377 938.53 687 669 163.8
D 4 160 145094 881.84 687 669 163.8
D 4 95 32131 192.1 687 669 163.8

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