ASTROSAT CZTI

Data Quality Report

Orbit 40553

Creation date: 2024-06-27T22:17:31.337979
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_054T02_9000005550_40553cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40553cztM0_level2_quad_clean.evt
Size (bytes)362,782,08092,594,880
Size346.0 MB 88.3 MB
Events in quadrant A3,059,068639,787
Events in quadrant B3,389,862644,218
Events in quadrant C3,010,384617,005
Events in quadrant D3,511,584491,839

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127293
B0139912
C0128202
D0145862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5874110.187266%
B5874470.800136%
C5874540.919305%
D5874101317.245489%

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 7157 5875 5 5 0.07% 0.09%
B 7157 5875 37 37 0.52% 0.63%
C 7157 5875 40 40 0.56% 0.68%
D 7157 5874 144 144 2.01% 2.45%

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 547533 4291.27 629 615 127.4
A 3 1 20264 154.17 629 615 127.4
A 2 79 17890 135.54 629 615 127.4
B 3 112 764823 6296.75 624 607 121.4
B 15 35 49277 401.02 624 607 121.4
B 15 85 48655 395.89 624 607 121.4
C 14 254 292947 2043.76 614 617 143.0
C 15 214 254985 1778.36 614 617 143.0
C 0 10 41223 283.89 614 617 143.0
D 2 250 476812 3403.73 561 547 139.9
D 12 227 443209 3163.58 561 547 139.9
D 12 191 226987 1618.3 561 547 139.9

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