ASTROSAT CZTI

Data Quality Report

Orbit 03657

Creation date: 2024-06-27T14:32:02.810087
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_234T02_9000000474_03657cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03657cztM0_level2_quad_clean.evt
Size (bytes)430,007,04059,670,720
Size410.1 MB 56.9 MB
Events in quadrant A3,182,919337,671
Events in quadrant B3,396,626339,519
Events in quadrant C2,920,977338,554
Events in quadrant D3,074,057331,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139453
B0144002
C0134442
D0139522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6590961.456753%
B65901001.517451%
C6590340.515933%
D6590831.259484%

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 7580 6591 34 34 0.45% 0.52%
B 7580 6591 15 15 0.20% 0.23%
C 7580 6591 5 5 0.07% 0.08%
D 7580 6591 31 31 0.41% 0.47%

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 50 177534 1123.21 759 741 157.4
A 13 164 32338 200.74 759 741 157.4
A 13 14 17109 103.99 759 741 157.4
B 15 204 201181 1340.98 769 748 149.5
B 5 172 56228 371.19 769 748 149.5
B 5 70 44874 295.22 769 748 149.5
C 9 247 17216 95.45 737 740 172.6
C 1 16 11434 61.95 737 740 172.6
C 7 220 7198 37.41 737 740 172.6
D 13 239 150049 843.95 732 711 177.0
D 2 37 48635 270.83 732 711 177.0
D 2 14 24689 135.51 732 711 177.0

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