ASTROSAT CZTI

Data Quality Report

Orbit 03620

Creation date: 2024-06-27T14:31:42.351086
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/AS1G05_234T02_9000000474_03620cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03620cztM0_level2_quad_clean.evt
Size (bytes)406,823,04076,029,120
Size388.0 MB 72.5 MB
Events in quadrant A2,871,741472,356
Events in quadrant B3,110,141469,042
Events in quadrant C2,985,550468,296
Events in quadrant D2,930,095458,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129572
B0133691
C0132701
D0132001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225580.931727%
B6225410.658635%
C6225681.092369%
D6225570.915663%

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 7340 6226 6 6 0.08% 0.10%
B 7340 6226 2 2 0.03% 0.03%
C 7340 6226 15 15 0.20% 0.24%
D 7340 6226 14 14 0.19% 0.22%

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 0 50 50242 337.95 716 699 146.6
A 0 31 30792 205.27 716 699 146.6
A 0 118 9410 59.42 716 699 146.6
B 15 204 80774 577.66 725 708 138.6
B 3 249 45950 326.41 725 708 138.6
B 0 182 35166 248.61 725 708 138.6
C 9 247 113702 693.41 706 708 163.0
C 2 53 98500 600.12 706 708 163.0
C 13 61 6103 33.11 706 708 163.0
D 13 223 82039 478.34 706 685 170.1
D 12 79 37679 217.52 706 685 170.1
D 8 195 32536 187.28 706 685 170.1

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
Veto Counter