ASTROSAT CZTI

Data Quality Report

Orbit 00767

Creation date: 2024-06-27T14:02:39.816819
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_9000000108_00767cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00767cztM0_level2_quad_clean.evt
Size (bytes)998,827,20097,248,960
Size952.6 MB 92.7 MB
Events in quadrant A8,368,089630,192
Events in quadrant B7,701,225651,227
Events in quadrant C6,993,147627,109
Events in quadrant D6,778,855607,008

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292460
B0272280
C0251430
D0244960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61561221.981806%
B6156200.324886%
C615540.064988%
D6156220.357375%

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 7466 6157 649 649 8.69% 10.54%
B 7466 6157 271 271 3.63% 4.40%
C 7465 6156 86 86 1.15% 1.40%
D 7466 6157 119 119 1.59% 1.93%

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 0 117 1252265 2878.71 1805 1815 434.4
A 15 249 87653 197.61 1805 1815 434.4
A 15 233 37840 82.93 1805 1815 434.4
B 7 221 165889 368.42 1923 1931 445.0
B 5 191 71515 156.36 1923 1931 445.0
B 0 220 70826 154.81 1923 1931 445.0
C 9 83 106027 216.45 1738 1793 481.6
C 15 241 33024 64.85 1738 1793 481.6
C 3 111 24922 48.03 1738 1793 481.6
D 10 85 375921 735.42 1652 1711 508.8
D 1 4 63736 121.9 1652 1711 508.8
D 12 188 49859 94.62 1652 1711 508.8

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