ASTROSAT CZTI

Data Quality Report

Orbit 35755

Creation date: 2022-05-13T11:25:18.489969
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/AS1A09_142T06_9000005132_35755cztM0_level2.evt modeM0/AS1A09_142T06_9000005132_35755cztM0_level2_quad_clean.evt
Size (bytes)379,955,52085,720,320
Size362.4 MB 81.7 MB
Events in quadrant A2,517,899573,772
Events in quadrant B2,673,069576,022
Events in quadrant C2,796,420563,313
Events in quadrant D3,186,915539,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105123
B0109792
C0110572
D0127022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4890230.470348%
B4890280.572597%
C48901222.494888%
D48901713.496933%

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 7012 4891 17 17 0.24% 0.35%
B 7012 4891 18 18 0.26% 0.37%
C 7012 4891 106 106 1.51% 2.17%
D 7012 4891 153 153 2.18% 3.13%

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 10 83 151890 1278.04 592 582 118.4
A 8 192 62266 521.02 592 582 118.4
A 13 6 9914 78.82 592 582 118.4
B 5 172 138131 1258.26 586 570 109.3
B 4 232 103375 940.35 586 570 109.3
B 0 190 53106 480.54 586 570 109.3
C 0 10 308046 2314.28 580 583 132.9
C 15 214 206828 1552.41 580 583 132.9
C 15 208 12116 86.81 580 583 132.9
D 13 249 545236 3887.98 579 565 140.1
D 2 153 106923 759.21 579 565 140.1
D 8 195 79639 564.45 579 565 140.1

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