ASTROSAT CZTI

Data Quality Report

Orbit 31298

Creation date: 2024-06-27T20:26:20.177142
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_31298cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31298cztM0_level2_quad_clean.evt
Size (bytes)726,387,84076,936,320
Size692.7 MB 73.4 MB
Events in quadrant A3,508,702485,000
Events in quadrant B5,796,787476,818
Events in quadrant C8,206,855423,673
Events in quadrant D4,020,366462,661

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144692
B0220492
C0292792
D0163233

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69071091.578109%
B69073124.517157%
C6907137219.863906%
D69061752.534028%

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 7592 6908 0 0 0.00% 0.00%
B 7592 6908 59 59 0.78% 0.85%
C 7592 6908 349 349 4.60% 5.05%
D 7591 6907 55 55 0.72% 0.80%

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 13630 69.66 909 891 182.9
A 3 137 9347 46.24 909 891 182.9
A 0 226 7635 36.88 909 891 182.9
B 6 159 1886375 10987.32 883 862 171.6
B 4 80 381877 2220.26 883 862 171.6
B 12 18 30256 171.29 883 862 171.6
C 3 233 4643996 24587.15 806 811 188.8
C 14 238 173904 916.58 806 811 188.8
C 0 10 169958 895.69 806 811 188.8
D 8 195 364825 1597.32 872 853 227.9
D 2 250 254159 1111.65 872 853 227.9
D 12 233 56341 243.51 872 853 227.9

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