ASTROSAT CZTI

Data Quality Report

Orbit 10164

Creation date: 2024-06-27T15:55:51.480026
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/AS1A03_133T01_9000001464_10164cztM0_level2.evt modeM0/AS1A03_133T01_9000001464_10164cztM0_level2_quad_clean.evt
Size (bytes)339,341,76057,473,280
Size323.6 MB 54.8 MB
Events in quadrant A2,171,759362,481
Events in quadrant B2,278,454365,929
Events in quadrant C2,078,835362,021
Events in quadrant D3,438,738330,666

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094242
B097571
C093061
D0133371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4532461.015004%
B4532430.948808%
C4532110.242718%
D45323046.707855%

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 4977 4533 1 1 0.02% 0.02%
B 4977 4533 1 1 0.02% 0.02%
C 4977 4533 0 0 0.00% 0.00%
D 4977 4533 276 276 5.55% 6.09%

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 15 174 18184 155.49 549 537 113.5
A 8 15 10910 91.4 549 537 113.5
A 1 162 9210 76.42 549 537 113.5
B 11 51 36184 334.51 550 536 106.6
B 0 214 33499 309.31 550 536 106.6
B 5 255 19774 180.52 550 536 106.6
C 13 61 3949 27.53 531 533 124.1
C 14 67 2485 15.73 531 533 124.1
C 14 234 2370 14.8 531 533 124.1
D 1 52 660404 5246.52 518 502 125.8
D 8 195 331549 2631.98 518 502 125.8
D 4 95 250587 1988.29 518 502 125.8

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