ASTROSAT CZTI

Data Quality Report

Orbit 35439

Creation date: 2022-04-20T20:28:26.688292
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_097T17_9000005074_35439cztM0_level2.evt modeM0/AS1A11_097T17_9000005074_35439cztM0_level2_quad_clean.evt
Size (bytes)609,252,48052,009,920
Size581.0 MB 49.6 MB
Events in quadrant A2,571,246322,541
Events in quadrant B8,365,400258,497
Events in quadrant C3,977,539306,709
Events in quadrant D3,171,223307,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110373
B0285842
C0152412
D0128062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540650.092490%
B5406212039.215686%
C54062865.290418%
D5406340.628931%

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 7078 5407 0 0 0.00% 0.00%
B 7078 5407 1586 1586 22.41% 29.33%
C 7078 5407 230 230 3.25% 4.25%
D 7078 5407 24 24 0.34% 0.44%

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 125810 988.27 628 614 126.7
A 13 6 15286 115.82 628 614 126.7
A 13 254 8666 63.56 628 614 126.7
B 4 251 5001320 45743.85 563 549 109.3
B 5 236 641692 5864.77 563 549 109.3
B 5 31 165974 1513.2 563 549 109.3
C 4 254 828526 5989.01 597 600 138.2
C 0 10 345277 2493.31 597 600 138.2
C 0 207 242958 1753.16 597 600 138.2
D 1 52 272078 1849.1 609 593 146.8
D 8 195 142008 963.19 609 593 146.8
D 12 6 82817 560.03 609 593 146.8

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