ASTROSAT CZTI

Data Quality Report

Orbit 16770

Creation date: 2024-06-27T17:27:25.943065
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/AS1A05_004T05_9000002488_16770cztM0_level2.evt modeM0/AS1A05_004T05_9000002488_16770cztM0_level2_quad_clean.evt
Size (bytes)642,358,08074,787,840
Size612.6 MB 71.3 MB
Events in quadrant A5,377,881438,232
Events in quadrant B3,613,748468,021
Events in quadrant C5,334,670448,180
Events in quadrant D4,666,115434,198

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203973
B0149492
C0207652
D0185752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A682779211.600996%
B6827791.157170%
C68271542.255749%
D68272613.823056%

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 7718 6829 629 629 8.15% 9.21%
B 7718 6829 6 6 0.08% 0.09%
C 7718 6829 7 7 0.09% 0.10%
D 7718 6829 185 185 2.40% 2.71%

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 15 174 2389283 15119.1 777 762 158.0
A 0 226 6853 38.56 777 762 158.0
A 12 194 5729 31.44 777 762 158.0
B 5 65 103057 645.12 815 795 158.5
B 5 236 71456 445.76 815 795 158.5
B 15 35 68555 427.46 815 795 158.5
C 3 233 1914438 10381.29 781 786 184.3
C 0 207 250103 1352.51 781 786 184.3
C 14 238 119661 644.88 781 786 184.3
D 12 110 996060 5209.96 782 761 191.0
D 1 52 317294 1656.91 782 761 191.0
D 11 176 297531 1553.46 782 761 191.0

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