ASTROSAT CZTI

Data Quality Report

Orbit 34930

Creation date: 2022-03-15T06:19:13.238711
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_065T12_9000005004_34930cztM0_level2.evt modeM0/AS1A11_065T12_9000005004_34930cztM0_level2_quad_clean.evt
Size (bytes)573,768,00058,901,760
Size547.2 MB 56.2 MB
Events in quadrant A7,097,422322,803
Events in quadrant B3,322,491378,001
Events in quadrant C2,759,716383,960
Events in quadrant D3,865,271353,743

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245663
B0130362
C0109462
D0149382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4909126125.687513%
B49092925.948258%
C49091252.546343%
D49091813.687105%

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 7062 4910 1207 1207 17.09% 24.58%
B 7062 4910 250 250 3.54% 5.09%
C 7062 4910 103 103 1.46% 2.10%
D 7062 4910 197 197 2.79% 4.01%

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 5009984 47684.21 522 512 105.1
A 10 83 49298 464.38 522 512 105.1
A 7 16 8487 75.91 522 512 105.1
B 5 172 830438 7771.88 565 552 106.8
B 5 255 136934 1277.22 565 552 106.8
B 4 232 58788 545.38 565 552 106.8
C 0 10 339715 2567.04 566 570 132.1
C 15 214 204945 1546.95 566 570 132.1
C 14 67 6271 43.15 566 570 132.1
D 8 195 742305 5508.38 552 537 134.7
D 2 31 221668 1642.12 552 537 134.7
D 13 249 188550 1396.19 552 537 134.7

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