ASTROSAT CZTI

Data Quality Report

Orbit 10726

Creation date: 2024-06-27T16:02:57.522011
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/AS1A03_078T01_9000001546_10726cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10726cztM0_level2_quad_clean.evt
Size (bytes)512,222,40095,572,800
Size488.5 MB 91.1 MB
Events in quadrant A3,285,716615,834
Events in quadrant B4,679,945621,853
Events in quadrant C3,048,124629,889
Events in quadrant D4,076,151591,635

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139073
B0180822
C0131622
D0163992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62361171.876203%
B62364276.847338%
C6236480.769724%
D62362524.041052%

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 8906 6238 63 63 0.71% 1.01%
B 8906 6238 231 231 2.59% 3.70%
C 8906 6238 6 6 0.07% 0.10%
D 8906 6238 159 159 1.79% 2.55%

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 244474 1547.48 775 762 157.5
A 1 162 16194 97.99 775 762 157.5
A 4 2 13184 78.87 775 762 157.5
B 4 239 1226647 8254.9 777 759 148.5
B 4 81 325523 2186.9 777 759 148.5
B 0 219 37929 250.3 777 759 148.5
C 14 234 26929 146.23 773 780 178.8
C 13 61 5783 27.98 773 780 178.8
C 12 4 4695 21.89 773 780 178.8
D 12 233 390971 2152.26 752 732 181.3
D 10 199 286710 1577.23 752 732 181.3
D 8 195 185343 1018.17 752 732 181.3

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