ASTROSAT CZTI

Data Quality Report

Orbit 35453

Creation date: 2022-04-21T00:10:46.408856
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/AS1A11_068T03_9000005076_35453cztM0_level2.evt modeM0/AS1A11_068T03_9000005076_35453cztM0_level2_quad_clean.evt
Size (bytes)476,628,48062,648,640
Size454.5 MB 59.7 MB
Events in quadrant A2,749,104388,800
Events in quadrant B4,351,672377,047
Events in quadrant C3,621,624379,066
Events in quadrant D3,334,694362,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114503
B0165882
C0140172
D0134982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A556590.161725%
B55652644.743935%
C55651903.414196%
D5565901.617251%

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 9510 5567 2 2 0.02% 0.04%
B 9510 5567 177 177 1.86% 3.18%
C 9510 5567 139 139 1.46% 2.50%
D 9510 5567 73 73 0.77% 1.31%

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 131947 971.99 666 651 135.1
A 9 143 22227 159.73 666 651 135.1
A 13 6 12027 84.22 666 651 135.1
B 4 251 1063915 8465.34 650 633 125.6
B 5 200 320106 2543.49 650 633 125.6
B 5 172 206952 1642.61 650 633 125.6
C 0 10 822990 5550.02 637 641 148.2
C 15 214 227928 1533.96 637 641 148.2
C 0 207 48164 320.73 637 641 148.2
D 13 249 274675 1744.27 641 622 157.1
D 1 52 144954 918.63 641 622 157.1
D 8 195 129704 821.57 641 622 157.1

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