ASTROSAT CZTI

Data Quality Report

Orbit 35511

Creation date: 2022-04-23T12:20:14.931497
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_097T07_9000005084_35511cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35511cztM0_level2_quad_clean.evt
Size (bytes)425,825,28053,755,200
Size406.1 MB 51.3 MB
Events in quadrant A2,618,694320,886
Events in quadrant B3,314,256317,868
Events in quadrant C3,880,418314,986
Events in quadrant D2,720,885300,610

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110473
B0132762
C0148052
D0116212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5335100.187441%
B53351482.774133%
C53352985.585754%
D5335470.880975%

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 9221 5337 4 4 0.04% 0.07%
B 9221 5337 77 77 0.84% 1.44%
C 9221 5337 210 210 2.28% 3.93%
D 9221 5337 34 34 0.37% 0.64%

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 133168 1040.49 628 616 127.4
A 9 143 25147 192.56 628 616 127.4
A 15 169 19249 146.26 628 616 127.4
B 5 236 471942 3921.83 617 602 120.2
B 5 172 281610 2338.15 617 602 120.2
B 5 200 85542 706.75 617 602 120.2
C 0 10 982232 7058.48 595 600 139.1
C 0 207 291856 2094.29 595 600 139.1
C 15 214 217540 1559.92 595 600 139.1
D 13 249 70079 467.91 607 590 148.5
D 8 195 56668 377.6 607 590 148.5
D 7 80 55923 372.59 607 590 148.5

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