ASTROSAT CZTI

Data Quality Report

Orbit 40900

Creation date: 2024-06-27T22:21:57.991957
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_102T01_9000005576_40900cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40900cztM0_level2_quad_clean.evt
Size (bytes)357,059,52094,057,920
Size340.5 MB 89.7 MB
Events in quadrant A3,080,202630,563
Events in quadrant B3,404,469624,011
Events in quadrant C3,145,027614,515
Events in quadrant D3,123,838562,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128463
B0144792
C0135492
D0137702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5951150.252058%
B59513165.310032%
C59511242.083683%
D59511141.915644%

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 7264 5952 4 4 0.06% 0.07%
B 7264 5952 182 182 2.51% 3.06%
C 7264 5952 85 85 1.17% 1.43%
D 7264 5952 96 96 1.32% 1.61%

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 580833 4449.75 629 615 130.4
A 12 189 35749 269.45 629 615 130.4
A 2 79 14390 105.64 629 615 130.4
B 4 171 655312 5454.07 616 599 120.0
B 5 255 184419 1531.31 616 599 120.0
B 0 190 65648 541.89 616 599 120.0
C 14 254 465267 3238.69 608 611 143.5
C 15 214 254415 1769.04 608 611 143.5
C 0 10 25279 171.94 608 611 143.5
D 12 6 227027 1510.65 606 588 149.9
D 12 233 125404 832.69 606 588 149.9
D 2 249 76403 505.79 606 588 149.9

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