ASTROSAT CZTI

Data Quality Report

Orbit 04976

Creation date: 2024-06-27T14:49:37.263096
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_158T01_9000000630_04976cztM0_level2.evt modeM0/AS1G05_158T01_9000000630_04976cztM0_level2_quad_clean.evt
Size (bytes)446,823,36062,619,840
Size426.1 MB 59.7 MB
Events in quadrant A3,117,939363,298
Events in quadrant B3,162,862366,882
Events in quadrant C3,066,620368,661
Events in quadrant D3,742,896343,706

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134823
B0134852
C0134772
D0155442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6504620.953260%
B6504741.137761%
C6504560.861009%
D65042313.551661%

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 7659 6504 3 3 0.04% 0.05%
B 7659 6504 0 0 0.00% 0.00%
C 7659 6504 0 0 0.00% 0.00%
D 7659 6504 179 179 2.34% 2.75%

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 35796 215.97 799 781 162.1
A 12 194 8022 44.66 799 781 162.1
A 0 226 7910 43.97 799 781 162.1
B 15 204 17157 106.96 806 786 153.1
B 0 183 16744 104.26 806 786 153.1
B 12 111 13667 84.16 806 786 153.1
C 12 4 16680 88.85 777 784 178.9
C 9 54 12603 66.06 777 784 178.9
C 13 61 6329 30.99 777 784 178.9
D 2 33 558347 2980.53 766 744 187.1
D 13 235 108552 576.26 766 744 187.1
D 13 105 59440 313.74 766 744 187.1

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