ASTROSAT CZTI

Data Quality Report

Orbit 03899

Creation date: 2024-06-27T14:35:00.368722
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_083T02_9000000498_03899cztM0_level2.evt modeM0/AS1G05_083T02_9000000498_03899cztM0_level2_quad_clean.evt
Size (bytes)481,795,20095,794,560
Size459.5 MB 91.4 MB
Events in quadrant A3,627,560607,281
Events in quadrant B3,923,416606,321
Events in quadrant C3,179,923596,312
Events in quadrant D3,363,042581,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158902
B0164711
C0150451
D0155821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73241281.747679%
B73241131.542873%
C7299590.808330%
D7324951.297105%

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 7533 7323 33 33 0.44% 0.45%
B 7533 7323 34 34 0.45% 0.46%
C 7533 7298 8 8 0.11% 0.11%
D 7533 7323 17 17 0.23% 0.23%

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 2 79 113973 666.79 821 802 169.7
A 0 50 106638 623.57 821 802 169.7
A 0 118 103056 602.47 821 802 169.7
B 15 204 299130 1855.52 826 806 160.8
B 10 16 209668 1299.08 826 806 160.8
B 7 221 137817 852.18 826 806 160.8
C 12 4 32490 170.86 795 796 185.5
C 7 222 22812 118.68 795 796 185.5
C 2 53 11554 57.99 795 796 185.5
D 10 246 115130 596.51 795 771 191.7
D 4 95 52300 268.78 795 771 191.7
D 2 232 43600 223.4 795 771 191.7

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
Veto Counter