ASTROSAT CZTI

Data Quality Report

Orbit 07999

Creation date: 2024-06-27T15:26:38.645999
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/AS1G06_138T03_9000001096_07999cztM0_level2.evt modeM0/AS1G06_138T03_9000001096_07999cztM0_level2_quad_clean.evt
Size (bytes)473,889,60084,464,640
Size451.9 MB 80.6 MB
Events in quadrant A3,324,107515,590
Events in quadrant B3,390,917527,396
Events in quadrant C3,451,768522,515
Events in quadrant D3,709,465504,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145533
B0145872
C0145792
D0158052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70051001.427552%
B70051041.484654%
C7005901.284797%
D70051732.469665%

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 8850 7007 3 3 0.03% 0.04%
B 8850 7007 0 0 0.00% 0.00%
C 8850 7007 0 0 0.00% 0.00%
D 8850 7007 70 70 0.79% 1.00%

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 4 2 23555 129.69 855 837 175.2
A 0 226 8103 41.48 855 837 175.2
A 12 194 7418 37.57 855 837 175.2
B 11 51 32571 188.78 861 838 168.1
B 12 111 18672 106.1 861 838 168.1
B 11 111 15377 86.49 861 838 168.1
C 8 208 174136 886.58 838 842 195.5
C 13 61 6272 27.78 838 842 195.5
C 1 16 3847 15.37 838 842 195.5
D 1 52 200019 998.8 833 811 199.4
D 11 144 167301 834.76 833 811 199.4
D 2 14 145754 726.72 833 811 199.4

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter