ASTROSAT CZTI

Data Quality Report

Orbit 35292

Creation date: 2022-04-08T16:57:30.114430
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/AS1A11_082T01_9000005056_35292cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35292cztM0_level2_quad_clean.evt
Size (bytes)630,550,08060,537,600
Size601.3 MB 57.7 MB
Events in quadrant A2,700,178394,408
Events in quadrant B8,992,839320,938
Events in quadrant C3,265,424378,162
Events in quadrant D3,777,464366,170

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110803
B0304292
C0127572
D0144822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531560.112888%
B5315268650.536218%
C53151462.746943%
D53152013.781750%

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 7439 5316 0 0 0.00% 0.00%
B 7439 5315 2256 2256 30.33% 42.45%
C 7439 5316 121 121 1.63% 2.28%
D 7439 5316 189 189 2.54% 3.56%

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 10 83 95207 715.51 665 655 132.1
A 13 6 12742 91.47 665 655 132.1
A 15 169 10285 72.87 665 655 132.1
B 5 236 3905878 41350.41 500 489 94.4
B 5 172 3007828 31841.83 500 489 94.4
B 4 232 77254 812.79 500 489 94.4
C 0 10 492395 3388.15 635 641 145.1
C 15 214 219079 1505.02 635 641 145.1
C 4 254 53389 363.43 635 641 145.1
D 2 249 236822 1513.26 644 629 156.1
D 7 80 142913 911.6 644 629 156.1
D 13 13 129750 827.26 644 629 156.1

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