ASTROSAT CZTI

Data Quality Report

Orbit 09984

Creation date: 2024-06-27T15:53:19.831333
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/AS1G07_074T01_9000001426_09984cztM0_level2.evt modeM0/AS1G07_074T01_9000001426_09984cztM0_level2_quad_clean.evt
Size (bytes)554,250,24088,171,200
Size528.6 MB 84.1 MB
Events in quadrant A4,666,707549,488
Events in quadrant B4,174,381570,833
Events in quadrant C2,781,021573,602
Events in quadrant D4,741,797541,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180712
B0166621
C0127241
D0185991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A621568010.941271%
B62152343.765084%
C6215440.707965%
D62152233.588093%

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 7330 6215 484 484 6.60% 7.79%
B 7330 6215 173 173 2.36% 2.78%
C 7330 6215 5 5 0.07% 0.08%
D 7330 6215 137 137 1.87% 2.20%

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 13 251 1761457 12076.66 714 699 145.8
A 15 174 74976 509.45 714 699 145.8
A 14 111 61080 414.14 714 699 145.8
B 0 85 810723 5816.1 731 715 139.3
B 0 214 149314 1066.99 731 715 139.3
B 11 51 108385 773.1 731 715 139.3
C 8 208 17352 102.2 703 708 162.9
C 9 221 15197 88.97 703 708 162.9
C 13 61 5360 28.57 703 708 162.9
D 1 52 1021220 5395.79 695 679 189.1
D 8 195 701581 3705.8 695 679 189.1
D 2 16 102041 535.92 695 679 189.1

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