ASTROSAT CZTI

Data Quality Report

Orbit 08657

Creation date: 2024-06-27T15:35:32.761112
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/AS1G07_024T01_9000001206_08657cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08657cztM0_level2_quad_clean.evt
Size (bytes)438,465,600124,882,560
Size418.2 MB 119.1 MB
Events in quadrant A3,040,250820,267
Events in quadrant B3,487,148845,438
Events in quadrant C2,946,355844,463
Events in quadrant D3,342,420798,145

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140203
B0150152
C0138442
D0149752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6805250.367377%
B6805851.249082%
C6805100.146951%
D6805771.131521%

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 7910 6806 10 10 0.13% 0.15%
B 7910 6806 36 36 0.46% 0.53%
C 7910 6806 0 0 0.00% 0.00%
D 7910 6806 61 61 0.77% 0.90%

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 5 16 72580 473.62 755 738 151.7
A 8 5 45157 292.83 755 738 151.7
A 15 174 11055 68.01 755 738 151.7
B 10 16 135864 946.37 771 753 142.8
B 5 175 123368 858.84 771 753 142.8
B 0 219 99262 689.99 771 753 142.8
C 1 16 22228 125.13 748 754 171.6
C 8 222 5974 30.42 748 754 171.6
C 13 61 5816 29.5 748 754 171.6
D 12 233 171992 960.92 735 710 178.2
D 2 152 152636 852.33 735 710 178.2
D 2 14 63148 350.29 735 710 178.2

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