ASTROSAT CZTI

Data Quality Report

Orbit 35609

Creation date: 2022-04-30T02:39:28.568674
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/AS1A10_065T04_9000005098_35609cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35609cztM0_level2_quad_clean.evt
Size (bytes)447,840,00062,242,560
Size427.1 MB 59.4 MB
Events in quadrant A2,508,184404,993
Events in quadrant B3,632,995388,774
Events in quadrant C3,037,035387,506
Events in quadrant D4,046,284353,562

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104743
B0139012
C0119272
D0153402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497460.120627%
B49743917.860877%
C49741683.377563%
D49743687.398472%

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 7036 4975 0 0 0.00% 0.00%
B 7036 4975 279 279 3.97% 5.61%
C 7036 4975 121 121 1.72% 2.43%
D 7036 4975 342 342 4.86% 6.87%

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 135388 1103.25 608 597 122.2
A 8 6 10816 83.64 608 597 122.2
A 13 254 6717 50.09 608 597 122.2
B 5 172 1075079 9544.88 590 576 112.6
B 3 112 132644 1173.17 590 576 112.6
B 4 81 29296 255.12 590 576 112.6
C 0 10 482694 3555.14 586 592 135.6
C 15 214 204067 1500.47 586 592 135.6
C 12 249 45319 329.82 586 592 135.6
D 7 80 1133356 8109.92 570 556 139.7
D 2 249 183515 1309.84 570 556 139.7
D 8 195 118050 841.16 570 556 139.7

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