ASTROSAT CZTI

Data Quality Report

Orbit 34673

Creation date: 2022-02-25T22:31:42.671442
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_065T13_9000004960_34673cztM0_level2.evt modeM0/AS1A11_065T13_9000004960_34673cztM0_level2_quad_clean.evt
Size (bytes)582,508,80083,655,360
Size555.5 MB 79.8 MB
Events in quadrant A3,125,563558,876
Events in quadrant B3,980,958555,913
Events in quadrant C3,159,317542,424
Events in quadrant D6,975,212462,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131763
B0155832
C0128052
D0248412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5908530.897089%
B59083485.890318%
C5908560.947867%
D590990015.231004%

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 7251 5909 26 26 0.36% 0.44%
B 7251 5909 209 209 2.88% 3.54%
C 7251 5909 39 39 0.54% 0.66%
D 7252 5910 749 749 10.33% 12.67%

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 15 169 363417 2614.06 683 669 138.8
A 10 83 50890 361.91 683 669 138.8
A 9 143 31490 222.1 683 669 138.8
B 5 172 961174 7598.03 666 649 126.4
B 5 255 251487 1984.2 666 649 126.4
B 0 190 57445 449.27 666 649 126.4
C 15 214 253215 1646.1 660 664 153.4
C 14 67 158264 1027.22 660 664 153.4
C 0 10 153932 998.99 660 664 153.4
D 8 195 1944539 11768.14 614 600 165.2
D 7 38 1528844 9251.63 614 600 165.2
D 2 249 248637 1501.56 614 600 165.2

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