ASTROSAT CZTI

Data Quality Report

Orbit 34193

Creation date: 2022-01-24T11:17:34.637062
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_047T15_9000004882_34193cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34193cztM0_level2_quad_clean.evt
Size (bytes)443,223,36077,667,840
Size422.7 MB 74.1 MB
Events in quadrant A2,513,703511,476
Events in quadrant B3,288,907510,629
Events in quadrant C3,123,698490,040
Events in quadrant D4,134,847466,401

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109282
B0134061
C0124051
D0160491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5333150.281268%
B53332043.825239%
C53331713.206450%
D5333951.781361%

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 7305 5334 4 4 0.05% 0.07%
B 7305 5334 138 138 1.89% 2.59%
C 7305 5334 133 133 1.82% 2.49%
D 7305 5334 84 84 1.15% 1.57%

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 9 143 31877 248.17 628 617 126.0
A 10 83 21892 168.9 628 617 126.0
A 13 6 13130 99.34 628 617 126.0
B 5 172 592704 5012.53 619 604 118.1
B 0 189 112704 949.0 619 604 118.1
B 0 219 76318 640.97 619 604 118.1
C 0 10 438023 3159.96 596 601 138.4
C 15 214 242527 1747.69 596 601 138.4
C 0 239 105764 759.7 596 601 138.4
D 8 195 968130 6315.34 596 582 153.2
D 10 199 221093 1439.31 596 582 153.2
D 10 118 196309 1277.54 596 582 153.2

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