ASTROSAT CZTI

Data Quality Report

Orbit 03889

Creation date: 2024-06-27T14:34:50.592830
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_239T02_9000000496_03889cztM0_level2.evt modeM0/AS1G05_239T02_9000000496_03889cztM0_level2_quad_clean.evt
Size (bytes)701,225,28065,658,240
Size668.7 MB 62.6 MB
Events in quadrant A4,533,593383,537
Events in quadrant B3,306,157404,278
Events in quadrant C8,711,562370,971
Events in quadrant D4,251,648380,205

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178792
B0141451
C0303831
D0172661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64304647.216174%
B6430811.259720%
C6430101715.816485%
D64302503.888025%

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 7500 6430 351 351 4.68% 5.46%
B 7500 6430 30 30 0.40% 0.47%
C 7500 6430 1086 1086 14.48% 16.89%
D 7500 6430 292 292 3.89% 4.54%

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 0 199 1130353 7648.36 714 700 147.7
A 0 118 261184 1763.62 714 700 147.7
A 8 15 219857 1483.81 714 700 147.7
B 15 204 261778 1809.17 742 723 144.3
B 10 16 100639 692.44 742 723 144.3
B 0 183 14934 98.49 742 723 144.3
C 2 53 6000048 37653.12 680 685 159.3
C 14 67 28482 174.46 680 685 159.3
C 10 65 8438 48.66 680 685 159.3
D 9 82 1138614 6693.06 696 677 170.0
D 12 110 291807 1712.35 696 677 170.0
D 13 248 34674 199.96 696 677 170.0

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
Veto Counter