ASTROSAT CZTI

Data Quality Report

Orbit 13268

Creation date: 2024-06-27T16:38:42.749856
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/AS1G08_031T03_9000001972_13268cztM0_level2.evt modeM0/AS1G08_031T03_9000001972_13268cztM0_level2_quad_clean.evt
Size (bytes)571,196,16089,861,760
Size544.7 MB 85.7 MB
Events in quadrant A6,555,592565,670
Events in quadrant B3,345,438587,725
Events in quadrant C2,891,728582,858
Events in quadrant D4,087,805554,159

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235652
B0139741
C0126961
D0161351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A615997415.814256%
B61591672.711479%
C6159320.519565%
D61593685.974996%

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 7225 6161 808 808 11.18% 13.11%
B 7225 6160 76 76 1.05% 1.23%
C 7225 6161 1 1 0.01% 0.02%
D 7225 6161 296 296 4.10% 4.80%

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 15 239 3560265 24011.1 729 712 148.2
A 8 15 76284 509.77 729 712 148.2
A 4 2 72818 486.39 729 712 148.2
B 4 239 303884 2119.34 742 722 143.0
B 3 64 47008 323.58 742 722 143.0
B 4 173 41779 287.02 742 722 143.0
C 15 208 23059 131.46 732 737 169.8
C 6 96 8191 43.9 732 737 169.8
C 13 61 5175 26.14 732 737 169.8
D 1 52 1008327 5883.55 714 694 171.3
D 5 222 303465 1767.87 714 694 171.3
D 14 35 45646 262.47 714 694 171.3

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