ASTROSAT CZTI

Data Quality Report

Orbit 40433

Creation date: 2024-06-27T22:16:03.588648
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/AS1A12_022T01_9000005540_40433cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40433cztM0_level2_quad_clean.evt
Size (bytes)304,767,36089,565,120
Size290.6 MB 85.4 MB
Events in quadrant A2,816,524620,785
Events in quadrant B2,410,532634,991
Events in quadrant C2,436,704597,766
Events in quadrant D3,226,699507,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115533
B0102552
C0101542
D0129592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5011270.538815%
B501160.119737%
C501140.079824%
D50114929.818400%

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 7133 5012 11 11 0.15% 0.22%
B 7133 5012 2 2 0.03% 0.04%
C 7133 5012 1 1 0.01% 0.02%
D 7133 5012 88 88 1.23% 1.76%

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 467556 4038.14 574 565 115.6
A 15 235 52622 450.14 574 565 115.6
A 2 79 34374 292.35 574 565 115.6
B 3 112 85726 781.94 572 557 108.9
B 4 170 45906 416.35 572 557 108.9
B 4 171 20420 182.36 572 557 108.9
C 15 214 218231 1680.1 563 568 129.6
C 0 10 11224 82.25 563 568 129.6
C 5 250 9077 65.68 563 568 129.6
D 12 227 424214 3248.56 533 517 130.4
D 13 171 196849 1505.31 533 517 130.4
D 12 128 176912 1352.45 533 517 130.4

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