ASTROSAT CZTI

Data Quality Report

Orbit 31776

Creation date: 2024-06-27T20:32:35.351579
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/AS1A10_109T01_9000004638_31776cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31776cztM0_level2_quad_clean.evt
Size (bytes)580,985,280107,608,320
Size554.1 MB 102.6 MB
Events in quadrant A3,860,897709,820
Events in quadrant B5,313,311711,949
Events in quadrant C3,589,823689,276
Events in quadrant D4,367,930671,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159051
B0206961
C0148021
D0177081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68461472.147239%
B68461061.548349%
C68471582.307580%
D6847701.022346%

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 7506 6847 61 61 0.81% 0.89%
B 7506 6847 0 0 0.00% 0.00%
C 7507 6848 10 10 0.13% 0.15%
D 7507 6848 34 34 0.45% 0.50%

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 13 510495 2929.96 864 850 173.9
A 14 238 17489 95.66 864 850 173.9
A 13 254 11253 59.81 864 850 173.9
B 6 159 1904361 11510.87 858 837 165.4
B 12 111 20119 116.6 858 837 165.4
B 11 111 18374 106.05 858 837 165.4
C 14 238 140853 711.21 839 847 196.9
C 0 10 98757 497.37 839 847 196.9
C 3 233 41640 207.22 839 847 196.9
D 8 195 917430 4533.41 843 825 202.2
D 10 203 103508 507.86 843 825 202.2
D 12 218 82107 402.01 843 825 202.2

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