ASTROSAT CZTI

Data Quality Report

Orbit 20088

Creation date: 2024-06-27T18:11:06.834033
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/AS1A05_180T01_9000002992_20088cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20088cztM0_level2_quad_clean.evt
Size (bytes)453,487,68090,587,520
Size432.5 MB 86.4 MB
Events in quadrant A3,546,749590,647
Events in quadrant B3,222,796598,451
Events in quadrant C3,131,420563,581
Events in quadrant D3,416,490562,391

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142332
B0131791
C0129621
D0139701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61271893.084707%
B6128861.403394%
C6128841.370757%
D6128771.256527%

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 7287 6128 79 79 1.08% 1.29%
B 7288 6129 4 4 0.05% 0.07%
C 7288 6129 4 4 0.05% 0.07%
D 7288 6129 31 31 0.43% 0.51%

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 14 238 259066 1595.21 808 794 161.9
A 4 2 137695 845.57 808 794 161.9
A 12 16 19694 116.73 808 794 161.9
B 0 198 53761 350.24 802 784 151.3
B 4 80 19129 121.28 802 784 151.3
B 12 111 17851 112.83 802 784 151.3
C 14 238 121720 679.07 766 775 178.1
C 4 254 25318 137.8 766 775 178.1
C 13 61 5333 25.59 766 775 178.1
D 12 218 276405 1463.95 784 766 188.3
D 1 52 169305 895.13 784 766 188.3
D 2 234 25899 133.48 784 766 188.3

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