ASTROSAT CZTI

Data Quality Report

Orbit 35571

Creation date: 2022-04-27T18:09:02.996117
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/AS1T05_026T01_9000005092_35571cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35571cztM0_level2_quad_clean.evt
Size (bytes)545,304,96068,667,840
Size520.0 MB 65.5 MB
Events in quadrant A4,916,531415,876
Events in quadrant B3,001,133435,565
Events in quadrant C3,448,725430,632
Events in quadrant D4,758,090393,752

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186843
B0126832
C0137762
D0180882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5773310.536983%
B5773961.662914%
C57731091.888100%
D57734107.102027%

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 7086 5774 0 0 0.00% 0.00%
B 7086 5774 68 68 0.96% 1.18%
C 7086 5774 72 72 1.02% 1.25%
D 7086 5774 328 328 4.63% 5.68%

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 2230893 16907.47 652 639 131.9
A 10 83 142181 1073.02 652 639 131.9
A 13 6 21218 156.01 652 639 131.9
B 5 172 308667 2430.22 652 632 126.8
B 5 200 79579 622.85 652 632 126.8
B 0 189 22128 169.59 652 632 126.8
C 0 10 400962 2679.74 642 647 149.4
C 15 214 259497 1732.76 642 647 149.4
C 9 187 128933 858.76 642 647 149.4
D 1 52 1711945 11544.72 614 597 148.2
D 8 195 162821 1094.36 614 597 148.2
D 12 233 153668 1032.61 614 597 148.2

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