ASTROSAT CZTI

Data Quality Report

Orbit 35997

Creation date: 2022-07-19T01:27:02.433446
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_050T19_9000005156_35997cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35997cztM0_level2_quad_clean.evt
Size (bytes)524,070,72098,971,200
Size499.8 MB 94.4 MB
Events in quadrant A2,587,532694,906
Events in quadrant B3,110,393691,418
Events in quadrant C4,207,771647,045
Events in quadrant D5,597,826583,588

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112143
B0127702
C0158482
D0202982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A542460.110619%
B54241382.544248%
C542455610.250737%
D5424105919.524336%

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 7159 5426 0 0 0.00% 0.00%
B 7159 5426 85 85 1.19% 1.57%
C 7158 5425 471 471 6.58% 8.68%
D 7159 5426 777 777 10.85% 14.32%

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 161864 1280.09 624 611 126.0
A 13 254 8976 66.4 624 611 126.0
A 13 6 7375 53.7 624 611 126.0
B 4 171 310906 2657.18 614 598 116.8
B 5 172 243278 2078.08 614 598 116.8
B 5 255 51053 432.05 614 598 116.8
C 0 207 1121122 8234.24 585 587 136.1
C 9 187 375451 2754.69 585 587 136.1
C 15 214 216693 1588.05 585 587 136.1
D 1 52 2321423 16877.39 555 537 137.5
D 12 235 479055 3479.76 555 537 137.5
D 8 230 182744 1325.0 555 537 137.5

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