ASTROSAT CZTI

Data Quality Report

Orbit 36669

Creation date: 2024-06-27T21:30:01.143370
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_049T05_9000005232_36669cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36669cztM0_level2_quad_clean.evt
Size (bytes)464,215,68086,987,520
Size442.7 MB 83.0 MB
Events in quadrant A2,686,745594,175
Events in quadrant B3,254,973585,258
Events in quadrant C3,021,611578,739
Events in quadrant D4,746,751515,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110323
B0126942
C0119542
D0175072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5138310.603348%
B51381773.444920%
C51381723.347606%
D513869413.507201%

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 7081 5139 20 20 0.28% 0.39%
B 7081 5139 133 133 1.88% 2.59%
C 7081 5139 118 118 1.67% 2.30%
D 7081 5139 563 563 7.95% 10.96%

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 10 83 209839 1668.4 619 608 125.4
A 0 8 58765 463.74 619 608 125.4
A 13 6 10616 79.8 619 608 125.4
B 5 255 656721 5670.15 603 587 115.7
B 0 189 82103 704.44 603 587 115.7
B 0 199 40519 345.08 603 587 115.7
C 0 10 484069 3558.26 586 590 135.9
C 15 214 233970 1717.61 586 590 135.9
C 12 249 10446 72.54 586 590 135.9
D 2 249 1102843 7982.83 563 548 138.1
D 12 233 451808 3268.03 563 548 138.1
D 13 249 267362 1932.27 563 548 138.1

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