ASTROSAT CZTI

Data Quality Report

Orbit 20522

Creation date: 2024-06-27T18:16:22.304735
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/AS1A05_115T03_9000003032_20522cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20522cztM0_level2_quad_clean.evt
Size (bytes)440,493,12084,879,360
Size420.1 MB 80.9 MB
Events in quadrant A2,858,620555,053
Events in quadrant B3,497,715555,215
Events in quadrant C2,919,152530,373
Events in quadrant D3,659,194512,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124150
B0143320
C0125280
D0148820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5975410.686192%
B5975751.255230%
C5976661.104418%
D59762013.363454%

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 7125 5975 0 0 0.00% 0.00%
B 7125 5975 22 22 0.31% 0.37%
C 7126 5976 11 11 0.15% 0.18%
D 7126 5976 127 127 1.78% 2.13%

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 11 29 15667 100.29 737 721 149.0
A 0 226 6510 38.84 737 721 149.0
A 12 194 5441 31.67 737 721 149.0
B 0 189 204530 1470.85 735 719 138.6
B 7 220 169081 1215.02 735 719 138.6
B 0 219 66356 473.68 735 719 138.6
C 14 238 109885 653.78 706 711 167.0
C 3 9 33392 195.71 706 711 167.0
C 9 221 12686 71.71 706 711 167.0
D 5 222 237517 1368.78 710 691 173.0
D 7 238 173980 1001.56 710 691 173.0
D 12 227 134832 775.29 710 691 173.0

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