ASTROSAT CZTI

Data Quality Report

Orbit 03844

Creation date: 2024-06-27T14:34:17.241013
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_189T01_9000000492_03844cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03844cztM0_level2_quad_clean.evt
Size (bytes)1,304,775,360171,305,280
Size1.2 GB 163.4 MB
Events in quadrant A9,686,6181,059,177
Events in quadrant B7,544,1211,074,973
Events in quadrant C14,091,824947,436
Events in quadrant D7,144,2701,034,915

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395394
B0328063
C0517303
D0329293

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155187664.936203%
B155181080.695966%
C15518270617.437814%
D155181470.947287%

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 17543 15520 425 425 2.42% 2.74%
B 17543 15518 2 2 0.01% 0.01%
C 17543 15519 2618 2618 14.92% 16.87%
D 17543 15519 78 78 0.44% 0.50%

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 15 234 2747300 7708.85 1748 1709 356.2
A 13 251 78896 216.72 1748 1709 356.2
A 0 199 58494 159.44 1748 1709 356.2
B 15 204 444827 1279.66 1797 1755 346.2
B 14 167 42448 117.53 1797 1755 346.2
B 12 111 30931 84.26 1797 1755 346.2
C 2 53 7964112 22464.84 1522 1534 354.4
C 1 241 63968 176.15 1522 1534 354.4
C 9 247 63834 175.77 1522 1534 354.4
D 13 248 367438 883.23 1715 1659 414.1
D 13 223 109976 261.55 1715 1659 414.1
D 2 14 51698 120.83 1715 1659 414.1

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