ASTROSAT CZTI

Data Quality Report

Orbit 01794

Creation date: 2024-06-27T14:12:47.754593
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/AS1G02_020T01_9000000296_01794cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01794cztM0_level2_quad_clean.evt
Size (bytes)1,049,397,12092,171,520
Size1000.8 MB 87.9 MB
Events in quadrant A7,798,585593,279
Events in quadrant B8,031,941603,169
Events in quadrant C8,299,861579,945
Events in quadrant D7,231,540573,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02765910
B0283952
C02910814
D0259852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6328490.774336%
B6330500.789889%
C6328771.216814%
D6330310.489731%

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 7540 6330 229 229 3.04% 3.62%
B 7540 6330 275 275 3.65% 4.34%
C 7540 6330 597 597 7.92% 9.43%
D 7540 6331 193 193 2.56% 3.05%

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 10 2 6298 8.71 2039 2053 487.3
A -1 -1 -1 -1.0 2039 2053 487.3
A -1 -1 -1 -1.0 2039 2053 487.3
B 4 200 13515 22.84 2116 2129 498.5
B 0 234 7239 10.25 2116 2129 498.5
B -1 -1 -1 -1.0 2116 2129 498.5
C 8 208 943967 1807.81 1877 1935 521.1
C 10 82 17795 30.44 1877 1935 521.1
C 9 236 8410 12.43 1877 1935 521.1
D 13 169 129685 225.02 1847 1914 567.8
D 10 199 90339 155.72 1847 1914 567.8
D 7 85 64137 109.58 1847 1914 567.8

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