ASTROSAT CZTI

Data Quality Report

Orbit 03908

Creation date: 2024-06-27T14:35:06.576673
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/AS1G05_172T01_9000000502_03908cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03908cztM0_level2_quad_clean.evt
Size (bytes)464,374,08064,578,240
Size442.9 MB 61.6 MB
Events in quadrant A3,184,421380,882
Events in quadrant B3,316,336385,592
Events in quadrant C2,965,016383,777
Events in quadrant D4,169,583365,133

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133622
B0136101
C0129151
D0167211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301540.857007%
B6301691.095064%
C6301480.761784%
D63014627.332169%

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 7646 6302 6 6 0.08% 0.10%
B 7646 6302 16 16 0.21% 0.25%
C 7646 6302 5 5 0.07% 0.08%
D 7646 6302 422 422 5.52% 6.70%

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 8 15 87254 560.79 763 747 154.3
A 0 118 66775 428.03 763 747 154.3
A 2 79 43957 280.11 763 747 154.3
B 14 167 137848 943.49 774 759 145.3
B 7 221 130735 894.53 774 759 145.3
B 15 204 40810 275.64 774 759 145.3
C 10 65 35367 201.74 748 751 171.6
C 9 247 7684 40.4 748 751 171.6
C 13 61 6393 32.88 748 751 171.6
D 2 32 974814 5751.84 711 691 169.4
D 13 239 144421 848.67 711 691 169.4
D 4 95 103735 608.44 711 691 169.4

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
Veto Counter