ASTROSAT CZTI

Data Quality Report

Orbit 00807

Creation date: 2024-06-27T14:03:12.259792
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/AS1P01_010T01_9000000112_00807cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00807cztM0_level2_quad_clean.evt
Size (bytes)942,220,80093,427,200
Size898.6 MB 89.1 MB
Events in quadrant A7,111,743610,985
Events in quadrant B7,498,862610,279
Events in quadrant C6,959,142593,865
Events in quadrant D6,561,079589,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254600
B0265980
C0249770
D0238750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6084200.328731%
B6084240.394477%
C6084290.476660%
D6084310.509533%

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 7169 6084 168 168 2.34% 2.76%
B 7169 6084 183 183 2.55% 3.01%
C 7169 6085 187 187 2.61% 3.07%
D 7169 6085 119 119 1.66% 1.96%

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 0 214 46382 100.55 1835 1849 442.9
A 15 233 10411 19.33 1835 1849 442.9
A 15 17 9333 16.9 1835 1849 442.9
B 0 23 68235 146.71 1917 1927 452.0
B 0 220 51800 110.35 1917 1927 452.0
B 15 22 29895 61.88 1917 1927 452.0
C 9 52 166412 350.29 1694 1748 470.1
C 9 83 44975 91.96 1694 1748 470.1
C 15 241 36897 74.77 1694 1748 470.1
D 13 25 190783 370.82 1651 1709 509.9
D 1 4 59230 112.81 1651 1709 509.9
D 13 170 58523 111.43 1651 1709 509.9

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