ASTROSAT CZTI

Data Quality Report

Orbit 37150

Creation date: 2024-06-27T21:36:14.095072
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_079T01_9000005284_37150cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37150cztM0_level2_quad_clean.evt
Size (bytes)478,442,88082,595,520
Size456.3 MB 78.8 MB
Events in quadrant A3,149,629528,173
Events in quadrant B3,099,015524,865
Events in quadrant C3,596,723518,966
Events in quadrant D4,211,649484,513

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134773
B0134422
C0146282
D0169532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6376180.282309%
B6376430.674404%
C6376270.423463%
D63763205.018821%

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 9033 6378 12 12 0.13% 0.19%
B 9033 6378 27 27 0.30% 0.42%
C 9033 6378 26 26 0.29% 0.41%
D 9033 6378 286 286 3.17% 4.48%

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 10 83 282863 1899.94 730 715 148.5
A 15 237 36246 239.26 730 715 148.5
A 13 254 8846 54.75 730 715 148.5
B 5 172 176107 1250.98 722 703 140.2
B 5 200 29382 204.54 722 703 140.2
B 0 182 18589 127.56 722 703 140.2
C 15 159 323561 1938.56 708 713 166.5
C 15 214 292201 1750.26 708 713 166.5
C 0 10 108772 648.85 708 713 166.5
D 2 249 1038388 6033.14 697 677 172.0
D 10 118 109974 635.44 697 677 172.0
D 2 250 107710 622.28 697 677 172.0

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