ASTROSAT CZTI

Data Quality Report

Orbit 31304

Creation date: 2024-06-27T20:26:25.208666
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_058T08_9000004532_31304cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31304cztM0_level2_quad_clean.evt
Size (bytes)569,612,16092,897,280
Size543.2 MB 88.6 MB
Events in quadrant A3,212,350601,198
Events in quadrant B5,254,052596,678
Events in quadrant C4,956,542566,137
Events in quadrant D3,367,209575,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139692
B0208052
C0194102
D0145592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6802340.499853%
B68021091.602470%
C68024055.954131%
D6803340.499780%

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 7702 6803 0 0 0.00% 0.00%
B 7702 6803 3 3 0.04% 0.04%
C 7702 6803 10 10 0.13% 0.15%
D 7703 6804 9 9 0.12% 0.13%

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 13 254 11760 65.27 832 813 167.7
A 3 137 8700 47.03 832 813 167.7
A 0 226 6804 35.72 832 813 167.7
B 6 159 1872694 11837.95 821 800 158.1
B 4 80 116842 733.86 821 800 158.1
B 12 111 20137 122.29 821 800 158.1
C 3 233 1558072 8351.65 786 789 186.5
C 14 238 182761 975.91 786 789 186.5
C 14 254 81165 431.05 786 789 186.5
D 8 195 233751 1131.6 798 782 205.9
D 2 250 52097 249.25 798 782 205.9
D 12 218 34687 164.69 798 782 205.9

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