ASTROSAT CZTI

Data Quality Report

Orbit 08239

Creation date: 2024-06-27T15:30:02.679187
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/AS1T01_164T01_9000001140_08239cztM0_level2.evt modeM0/AS1T01_164T01_9000001140_08239cztM0_level2_quad_clean.evt
Size (bytes)498,231,36086,757,120
Size475.2 MB 82.7 MB
Events in quadrant A3,582,229533,375
Events in quadrant B3,773,291540,495
Events in quadrant C3,376,258534,793
Events in quadrant D3,860,400509,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155323
B0160142
C0150342
D0166282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73121592.174508%
B73121482.024070%
C7312360.492341%
D7312901.230853%

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 8577 7314 44 44 0.51% 0.60%
B 8577 7314 12 12 0.14% 0.16%
C 8577 7314 2 2 0.02% 0.03%
D 8577 7314 48 48 0.56% 0.66%

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 15 234 150593 836.57 879 858 179.0
A 13 248 30506 165.64 879 858 179.0
A 5 16 9615 48.93 879 858 179.0
B 10 16 89891 522.65 890 868 170.3
B 11 51 76434 443.65 890 868 170.3
B 0 214 58772 339.95 890 868 170.3
C 12 4 8134 36.01 862 868 201.8
C 13 61 6461 27.72 862 868 201.8
C 3 233 6378 27.31 862 868 201.8
D 1 52 324010 1532.81 860 836 210.8
D 8 230 133102 627.33 860 836 210.8
D 13 105 97168 456.9 860 836 210.8

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