ASTROSAT CZTI

Data Quality Report

Orbit 40650

Creation date: 2024-06-27T22:18:42.485149
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_029T01_9000005556_40650cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40650cztM0_level2_quad_clean.evt
Size (bytes)340,513,92086,100,480
Size324.7 MB 82.1 MB
Events in quadrant A2,747,018590,668
Events in quadrant B2,933,204607,621
Events in quadrant C2,727,404568,372
Events in quadrant D3,802,422485,203

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109973
B0119322
C0111182
D0147852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5067130.256562%
B5067871.716992%
C5067681.342017%
D50674849.552003%

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 7190 5068 4 4 0.06% 0.08%
B 7190 5068 42 42 0.58% 0.83%
C 7190 5068 48 48 0.67% 0.95%
D 7190 5068 29 29 0.40% 0.57%

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 459845 3855.93 584 572 119.1
A 15 191 18681 152.04 584 572 119.1
A 2 79 9617 75.94 584 572 119.1
B 0 229 435539 3892.76 574 559 111.7
B 0 190 209315 1868.22 574 559 111.7
B 5 255 23616 206.34 574 559 111.7
C 14 254 297149 2284.5 557 559 129.8
C 15 214 223599 1717.98 557 559 129.8
C 0 10 24425 183.83 557 559 129.8
D 12 227 1199023 8991.8 537 523 133.3
D 5 51 170235 1273.27 537 523 133.3
D 12 191 160819 1202.63 537 523 133.3

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