ASTROSAT CZTI

Data Quality Report

Orbit 01008

Creation date: 2024-06-27T14:06:04.712075
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/AS1P01_998T02_9000000190_01008cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01008cztM0_level2_quad_clean.evt
Size (bytes)946,365,120103,239,360
Size902.5 MB 98.5 MB
Events in quadrant A7,145,864680,911
Events in quadrant B7,536,468689,352
Events in quadrant C7,092,544668,329
Events in quadrant D6,476,191657,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256351
B0267755
C0254741
D0236511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6163110.178485%
B6162170.275884%
C616230.048685%
D616250.081142%

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 7113 6164 120 120 1.69% 1.95%
B 7112 6162 180 180 2.53% 2.92%
C 7112 6163 97 97 1.36% 1.57%
D 7112 6163 74 74 1.04% 1.20%

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 12 189 9878 17.91 1859 1870 447.1
A 11 79 8022 13.76 1859 1870 447.1
A 3 111 5781 8.75 1859 1870 447.1
B 8 234 34247 70.42 1933 1948 458.7
B 5 249 23228 46.4 1933 1948 458.7
B 5 191 22035 43.79 1933 1948 458.7
C 15 241 308871 636.64 1725 1779 482.4
C 3 111 24889 47.91 1725 1779 482.4
C 3 79 22600 43.16 1725 1779 482.4
D 1 4 126230 238.54 1685 1743 521.9
D 1 83 32081 58.13 1685 1743 521.9
D 13 73 15620 26.59 1685 1743 521.9

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