ASTROSAT CZTI

Data Quality Report

Orbit 14187

Creation date: 2024-06-27T16:51:26.137886
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/AS1A04_229T01_9000002096_14187cztM0_level2.evt modeM0/AS1A04_229T01_9000002096_14187cztM0_level2_quad_clean.evt
Size (bytes)480,191,04083,430,720
Size457.9 MB 79.6 MB
Events in quadrant A3,327,064527,627
Events in quadrant B3,538,556547,725
Events in quadrant C3,418,147505,183
Events in quadrant D3,809,922484,973

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140283
B0144802
C0140992
D0155722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66041041.574803%
B66041191.801938%
C6604630.953967%
D66041271.923077%

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 7525 6606 5 5 0.07% 0.08%
B 7525 6606 1 1 0.01% 0.02%
C 7525 6606 10 10 0.13% 0.15%
D 7525 6606 52 52 0.69% 0.79%

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 12 189 32885 186.24 842 823 172.2
A 15 69 23104 129.43 842 823 172.2
A 12 96 15628 86.0 842 823 172.2
B 0 219 139151 863.01 844 826 160.3
B 3 209 29330 177.84 844 826 160.3
B 0 189 27973 169.37 844 826 160.3
C 3 233 214749 1148.93 806 811 186.2
C 0 207 52677 278.54 806 811 186.2
C 13 61 5946 27.58 806 811 186.2
D 8 195 243794 1236.91 801 783 196.5
D 7 254 142806 722.89 801 783 196.5
D 10 157 115730 585.07 801 783 196.5

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