ASTROSAT CZTI

Data Quality Report

Orbit 35727

Creation date: 2022-05-10T14:29:49.953611
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/AS1A09_029T05_9000005124_35727cztM0_level2.evt modeM0/AS1A09_029T05_9000005124_35727cztM0_level2_quad_clean.evt
Size (bytes)367,369,92062,588,160
Size350.4 MB 59.7 MB
Events in quadrant A2,391,394397,603
Events in quadrant B2,690,575398,954
Events in quadrant C2,887,444381,149
Events in quadrant D2,819,409370,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102523
B0111892
C0117652
D0118082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4948120.242522%
B4948841.697656%
C4948731.475344%
D4948801.616815%

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 7041 4949 0 0 0.00% 0.00%
B 7041 4949 59 59 0.84% 1.19%
C 7041 4949 77 77 1.09% 1.56%
D 7041 4949 86 86 1.22% 1.74%

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 145791 1259.61 571 561 115.3
A 13 6 15410 128.79 571 561 115.3
A 7 48 10406 85.39 571 561 115.3
B 5 172 273952 2515.89 568 555 108.7
B 15 85 54422 495.7 568 555 108.7
B 5 255 43627 396.36 568 555 108.7
C 15 214 210291 1661.15 544 549 126.3
C 0 10 195307 1542.48 544 549 126.3
C 1 23 194110 1533.0 544 549 126.3
D 14 52 344737 2559.2 544 528 134.5
D 13 249 140120 1037.87 544 528 134.5
D 2 249 39066 286.53 544 528 134.5

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