ASTROSAT CZTI

Data Quality Report

Orbit 36464

Creation date: 2022-07-11T12:41:56.134773
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_014T01_9000005204_36464cztM0_level2.evt modeM0/AS1A09_014T01_9000005204_36464cztM0_level2_quad_clean.evt
Size (bytes)398,243,520101,750,400
Size379.8 MB 97.0 MB
Events in quadrant A2,613,053699,177
Events in quadrant B3,269,328687,756
Events in quadrant C2,868,602684,903
Events in quadrant D2,966,735655,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108633
B0128862
C0113022
D0119082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505190.178183%
B50511092.157989%
C5051911.801623%
D5051991.960008%

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 7174 5052 0 0 0.00% 0.00%
B 7174 5052 82 82 1.14% 1.62%
C 7174 5052 56 56 0.78% 1.11%
D 7174 5052 75 75 1.05% 1.48%

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 181569 1468.38 624 615 123.2
A 13 254 9317 70.61 624 615 123.2
A 13 6 6668 49.12 624 615 123.2
B 5 172 377962 3323.75 611 595 113.5
B 5 255 208710 1833.02 611 595 113.5
B 0 189 86732 758.67 611 595 113.5
C 0 10 267259 1922.5 604 610 138.7
C 15 214 235440 1693.09 604 610 138.7
C 0 207 6175 40.12 604 610 138.7
D 13 249 139986 962.87 607 593 144.8
D 12 128 121810 837.32 607 593 144.8
D 10 199 89950 617.24 607 593 144.8

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