ASTROSAT CZTI

Data Quality Report

Orbit 07962

Creation date: 2024-06-27T15:26:05.421513
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/AS1G06_077T01_9000001090_07962cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07962cztM0_level2_quad_clean.evt
Size (bytes)1,452,280,320210,792,960
Size1.4 GB 201.0 MB
Events in quadrant A8,191,3221,365,724
Events in quadrant B8,040,8851,425,516
Events in quadrant C17,640,9591,147,011
Events in quadrant D9,005,0291,317,073

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03340
C03340
D03340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353224
B0348675
C0636783
D0382013

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163502091.278287%
B163491470.899138%
C16350433426.507645%
D163503201.957187%

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 20205 16354 91 91 0.45% 0.56%
B 20205 16354 24 24 0.12% 0.15%
C 20205 16353 4044 4044 20.01% 24.73%
D 20205 16354 162 162 0.80% 0.99%

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 0 254 454936 1145.68 1972 1932 395.4
A 15 234 45078 109.12 1972 1932 395.4
A 15 239 41788 100.8 1972 1932 395.4
B 10 16 91810 239.91 2011 1963 374.5
B 4 80 56802 146.43 2011 1963 374.5
B 5 255 42120 107.23 2011 1963 374.5
C 9 68 10859826 28964.36 1637 1651 374.9
C 1 16 368978 979.85 1637 1651 374.9
C 1 3 20079 49.16 1637 1651 374.9
D 1 52 941469 2035.31 1912 1860 461.7
D 13 104 342048 736.89 1912 1860 461.7
D 5 233 289515 623.1 1912 1860 461.7

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