ASTROSAT CZTI

Data Quality Report

Orbit 15945

Creation date: 2024-06-27T17:15:31.369659
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/AS1G08_081T01_9000002350_15945cztM0_level2.evt modeM0/AS1G08_081T01_9000002350_15945cztM0_level2_quad_clean.evt
Size (bytes)457,418,88083,943,360
Size436.2 MB 80.1 MB
Events in quadrant A3,325,131523,532
Events in quadrant B3,598,846532,839
Events in quadrant C3,331,419506,707
Events in quadrant D3,127,630497,344

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143073
B0149692
C0141182
D0140962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6912871.258681%
B69121832.647569%
C69121121.620370%
D6912660.954861%

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 7793 6913 7 7 0.09% 0.10%
B 7793 6913 36 36 0.46% 0.52%
C 7793 6913 0 0 0.00% 0.00%
D 7793 6913 2 2 0.03% 0.03%

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 15 239 78523 455.7 841 821 170.5
A 9 143 7728 40.51 841 821 170.5
A 0 226 7574 39.6 841 821 170.5
B 4 173 239498 1477.67 838 815 161.5
B 0 189 28653 172.34 838 815 161.5
B 12 111 19137 113.43 838 815 161.5
C 14 238 124796 658.33 803 807 188.3
C 3 233 74020 388.73 803 807 188.3
C 13 61 5762 26.31 803 807 188.3
D 2 234 26877 131.87 815 791 197.8
D 2 152 19806 96.13 815 791 197.8
D 14 226 8135 37.13 815 791 197.8

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