ASTROSAT CZTI

Data Quality Report

Orbit 45420

Creation date: 2024-06-27T23:11:24.462919
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/AS1A13_038T03_9000006058_45420cztM0_level2.fits modeM0/AS1A13_038T03_9000006058_45420cztM0_level2_quad_clean.evt
Size (bytes)568,428,480120,214,080
Size542.1 MB 114.6 MB
Events in quadrant A6,380,266802,730
Events in quadrant B6,029,727774,052
Events in quadrant C3,612,507807,843
Events in quadrant D4,431,705728,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024802308
B023307262
C016580154
D018960250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75542663.521313%
B757487111.499868%
C7579690.910410%
D75561602.117522%

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 7673 7638 112 112 1.46% 1.47%
B 7673 7647 592 592 7.72% 7.74%
C 7673 7639 48 48 0.63% 0.63%
D 7673 7631 143 143 1.86% 1.87%

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 83 2599460 14434.91 854 833 180.0
A 9 191 371728 2060.25 854 833 180.0
A 7 3 84797 466.4 854 833 180.0
B 15 201 2504799 14844.46 848 823 168.7
B 0 171 30864 178.09 848 823 168.7
B 0 189 29064 167.42 848 823 168.7
C 14 254 125608 623.35 845 848 200.1
C 1 3 112502 557.87 845 848 200.1
C 3 233 61248 301.78 845 848 200.1
D 1 52 689963 3246.39 834 808 212.3
D 5 222 140663 658.81 834 808 212.3
D 2 249 100792 470.99 834 808 212.3

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