ASTROSAT CZTI

Data Quality Report

Orbit 11989

Creation date: 2024-06-27T16:20:58.774427
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/AS1A04_082T01_9000001772_11989cztM0_level2.evt modeM0/AS1A04_082T01_9000001772_11989cztM0_level2_quad_clean.evt
Size (bytes)555,145,92097,493,760
Size529.4 MB 93.0 MB
Events in quadrant A3,820,583618,257
Events in quadrant B3,962,399625,388
Events in quadrant C3,818,787609,636
Events in quadrant D4,701,341576,481

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163792
B0167461
C0162221
D0189881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75111481.970443%
B75112012.676075%
C7511921.224870%
D75112873.821062%

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 7752 7512 6 6 0.08% 0.08%
B 7752 7512 46 46 0.59% 0.61%
C 7752 7512 0 0 0.00% 0.00%
D 7752 7512 204 204 2.63% 2.72%

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 1 162 188711 1060.83 862 844 177.1
A 1 178 102915 576.37 862 844 177.1
A 1 161 90156 504.32 862 844 177.1
B 4 239 431271 2564.48 868 845 167.8
B 15 204 80602 475.19 868 845 167.8
B 11 51 29054 168.07 868 845 167.8
C 8 208 516807 2626.56 847 849 196.4
C 13 61 6251 27.5 847 849 196.4
C 14 234 2549 8.65 847 849 196.4
D 1 52 983625 4911.93 827 802 200.1
D 8 195 217528 1083.15 827 802 200.1
D 7 80 182510 908.14 827 802 200.1

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter