ASTROSAT CZTI

Data Quality Report

Orbit 03718

Creation date: 2024-06-27T14:32:47.902906
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/AS1G05_182T01_9000000484_03718cztM0_level2.evt modeM0/AS1G05_182T01_9000000484_03718cztM0_level2_quad_clean.evt
Size (bytes)594,429,12055,687,680
Size566.9 MB 53.1 MB
Events in quadrant A3,467,814335,564
Events in quadrant B7,054,822244,684
Events in quadrant C3,791,958329,032
Events in quadrant D3,244,226319,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143503
B0251882
C0154872
D0140362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65411372.094481%
B6541176026.907201%
C65411031.574683%
D6541831.268919%

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 7746 6541 26 26 0.34% 0.40%
B 7746 6542 1518 1518 19.60% 23.20%
C 7746 6542 30 30 0.39% 0.46%
D 7746 6541 38 38 0.49% 0.58%

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 13 251 79758 468.88 830 811 168.4
A 0 118 69490 407.89 830 811 168.4
A 0 50 61475 360.29 830 811 168.4
B 0 173 3769000 26446.18 742 725 142.5
B 2 249 188710 1319.3 742 725 142.5
B 15 204 179660 1255.79 742 725 142.5
C 2 53 691402 3737.25 792 797 184.8
C 13 61 6906 33.06 792 797 184.8
C 10 65 4500 20.04 792 797 184.8
D 12 221 47271 244.03 790 767 190.6
D 5 233 43940 226.55 790 767 190.6
D 6 112 41204 212.2 790 767 190.6

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
Veto Counter