ASTROSAT CZTI

Data Quality Report

Orbit 34687

Creation date: 2022-02-26T21:05:39.337256
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/AS1A07_093T11_9000004964_34687cztM0_level2.evt modeM0/AS1A07_093T11_9000004964_34687cztM0_level2_quad_clean.evt
Size (bytes)556,963,20099,449,280
Size531.2 MB 94.8 MB
Events in quadrant A2,706,666681,180
Events in quadrant B4,408,872648,089
Events in quadrant C2,994,084668,939
Events in quadrant D6,368,732611,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118613
B0168752
C0122162
D0229332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5745210.365535%
B574567111.679721%
C5745370.644038%
D57455038.755440%

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 7176 5746 7 7 0.10% 0.12%
B 7176 5745 451 451 6.28% 7.85%
C 7176 5746 24 24 0.33% 0.42%
D 7176 5746 427 427 5.95% 7.43%

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 15 174 50461 377.19 658 645 132.1
A 10 83 50290 375.9 658 645 132.1
A 9 143 19225 140.68 658 645 132.1
B 5 172 908000 7775.07 619 605 116.7
B 5 255 823613 7051.99 619 605 116.7
B 4 232 91587 779.58 619 605 116.7
C 15 214 248097 1673.72 636 638 147.8
C 0 10 94064 631.9 636 638 147.8
C 14 67 56548 378.15 636 638 147.8
D 8 195 2244084 13475.26 616 603 166.5
D 2 250 543355 3259.99 616 603 166.5
D 7 38 450258 2700.81 616 603 166.5

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