ASTROSAT CZTI

Data Quality Report

Orbit 20859

Creation date: 2024-06-27T18:20:26.711699
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/AS1A05_160T01_9000003078_20859cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20859cztM0_level2_quad_clean.evt
Size (bytes)546,304,32067,285,440
Size521.0 MB 64.2 MB
Events in quadrant A3,342,860412,811
Events in quadrant B3,408,856422,846
Events in quadrant C3,368,750387,042
Events in quadrant D5,999,427376,162

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134211
B0136141
C0134521
D0221231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6285861.368337%
B62861051.670379%
C62861171.861279%
D62861302.068088%

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 7580 6286 0 0 0.00% 0.00%
B 7581 6287 0 0 0.00% 0.00%
C 7581 6287 29 29 0.38% 0.46%
D 7581 6287 26 26 0.34% 0.41%

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 0 226 7418 38.0 870 857 172.7
A 3 137 6921 35.12 870 857 172.7
A 12 194 6191 30.89 870 857 172.7
B 12 111 19282 114.46 858 838 161.1
B 11 111 16981 100.18 858 838 161.1
B 0 189 16301 95.96 858 838 161.1
C 14 238 127135 681.65 806 814 185.3
C 0 10 80204 428.41 806 814 185.3
C 7 247 11292 56.54 806 814 185.3
D 1 239 2430875 12081.65 831 809 201.1
D 1 52 195765 969.27 831 809 201.1
D 9 1 122852 606.77 831 809 201.1

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