ASTROSAT CZTI

Data Quality Report

Orbit 00152

Creation date: 2024-06-27T13:57:05.294257
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_120T01_9000000006_00152cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00152cztM0_level2_quad_clean.evt
Size (bytes)1,023,284,16056,393,280
Size975.9 MB 53.8 MB
Events in quadrant A7,446,384325,613
Events in quadrant B7,630,239335,695
Events in quadrant C6,693,631326,850
Events in quadrant D8,839,801316,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262132
B0267711
C0239541
D0303311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A574850.086987%
B5748230.400139%
C5748560.974252%
D57481893.288100%

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 7341 5750 218 218 2.97% 3.79%
B 7341 5750 260 260 3.54% 4.52%
C 7341 5750 139 139 1.89% 2.42%
D 7341 5750 819 819 11.16% 14.24%

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 14 10 38936 120.83 1869 1829 307.1
A 13 9 38124 118.18 1869 1829 307.1
A 0 86 19927 58.93 1869 1829 307.1
B 10 199 353071 863.76 1803 1810 406.7
B 8 236 106229 256.77 1803 1810 406.7
B 0 214 59628 142.18 1803 1810 406.7
C 9 54 205856 439.79 1639 1699 464.2
C 0 188 15758 30.28 1639 1699 464.2
C 10 17 8528 14.71 1639 1699 464.2
D 13 222 729438 1614.94 1728 1742 450.6
D 13 169 261378 576.2 1728 1742 450.6
D 13 223 169760 372.87 1728 1742 450.6

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter