ASTROSAT CZTI

Data Quality Report

Orbit 15540

Creation date: 2024-06-27T17:10:02.713176
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/AS1G08_058T09_9000002300_15540cztM0_level2.evt modeM0/AS1G08_058T09_9000002300_15540cztM0_level2_quad_clean.evt
Size (bytes)591,192,00092,871,360
Size563.8 MB 88.6 MB
Events in quadrant A3,655,476597,130
Events in quadrant B3,605,007607,633
Events in quadrant C3,662,505579,499
Events in quadrant D6,478,953512,540

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154733
B0154742
C0156812
D0244352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7412931.254722%
B7412951.281705%
C74121091.470588%
D7412112015.110631%

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 9153 7414 16 16 0.17% 0.22%
B 9153 7414 1 1 0.01% 0.01%
C 9153 7414 2 2 0.02% 0.03%
D 9153 7414 874 874 9.55% 11.79%

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 0 253 186667 1014.12 902 883 183.2
A 0 226 7918 38.4 902 883 183.2
A 12 194 6732 31.93 902 883 183.2
B 0 214 23129 128.18 900 877 173.6
B 12 111 21233 117.25 900 877 173.6
B 0 213 19711 108.49 900 877 173.6
C 14 238 130317 635.1 863 867 203.8
C 7 247 121834 593.48 863 867 203.8
C 3 233 30406 144.92 863 867 203.8
D 1 52 3117182 16416.52 780 758 189.8
D 5 222 348432 1831.46 780 758 189.8
D 9 68 28917 148.33 780 758 189.8

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