ASTROSAT CZTI

Data Quality Report

Orbit 20580

Creation date: 2024-06-27T18:17:03.627163
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/AS1A06_003T04_9000003046_20580cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20580cztM0_level2_quad_clean.evt
Size (bytes)1,279,895,040211,213,440
Size1.2 GB 201.4 MB
Events in quadrant A8,407,2961,323,680
Events in quadrant B9,408,6981,343,183
Events in quadrant C8,393,6801,287,613
Events in quadrant D11,368,3771,234,542

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0361094
B0389674
C0359364
D0453944

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175201380.787671%
B175202651.512557%
C175201660.947489%
D175207794.446347%

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 20525 17523 0 0 0.00% 0.00%
B 20525 17523 63 63 0.31% 0.36%
C 20525 17523 0 0 0.00% 0.00%
D 20525 17523 562 562 2.74% 3.21%

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 6 240 22225 46.34 2173 2128 433.7
A 12 96 21012 43.55 2173 2128 433.7
A 0 226 18957 38.81 2173 2128 433.7
B 7 220 536952 1321.53 2152 2096 404.7
B 0 197 188421 460.37 2152 2096 404.7
B 0 190 80005 192.5 2152 2096 404.7
C 14 238 323910 666.31 2066 2073 483.0
C 13 61 14404 25.53 2066 2073 483.0
C 8 208 12468 21.52 2066 2073 483.0
D 5 222 2295049 4541.23 2081 2021 504.9
D 1 52 517775 1021.42 2081 2021 504.9
D 7 238 266345 523.48 2081 2021 504.9

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