ASTROSAT CZTI

Data Quality Report

Orbit 08841

Creation date: 2024-06-27T15:37:54.395101
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_087T01_9000001228_08841cztM0_level2.evt modeM0/AS1G07_087T01_9000001228_08841cztM0_level2_quad_clean.evt
Size (bytes)449,481,60080,648,640
Size428.7 MB 76.9 MB
Events in quadrant A3,383,320502,124
Events in quadrant B3,284,576509,058
Events in quadrant C3,044,217497,175
Events in quadrant D3,464,788486,624

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01418011
B0138396
C0133692
D0142118

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6402901.405811%
B64041161.811368%
C6406651.014674%
D6404831.296065%

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 7582 6406 3 3 0.04% 0.05%
B 7582 6406 20 20 0.26% 0.31%
C 7582 6406 0 0 0.00% 0.00%
D 7582 6406 18 18 0.24% 0.28%

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 8 5 195174 1222.48 802 788 159.0
A 13 164 50252 311.07 802 788 159.0
A 15 174 28301 173.03 802 788 159.0
B 4 80 95249 624.17 802 784 151.3
B 4 48 37062 239.7 802 784 151.3
B 5 255 21751 138.54 802 784 151.3
C 13 61 5955 28.83 778 783 179.4
C 12 4 5895 28.5 778 783 179.4
C 1 16 4882 22.85 778 783 179.4
D 1 52 225552 1210.5 775 754 185.7
D 8 195 193145 1035.99 775 754 185.7
D 2 14 34846 183.58 775 754 185.7

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