ASTROSAT CZTI

Data Quality Report

Orbit 13031

Creation date: 2024-06-27T16:35:18.160380
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_216T01_9000001916_13031cztM0_level2.evt modeM0/AS1A04_216T01_9000001916_13031cztM0_level2_quad_clean.evt
Size (bytes)828,394,56097,752,960
Size790.0 MB 93.2 MB
Events in quadrant A4,205,960641,825
Events in quadrant B8,354,860515,389
Events in quadrant C3,859,284652,896
Events in quadrant D8,110,544576,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178723
B0301742
C0173282
D0295922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82333924.761326%
B8233242829.491073%
C82332583.133730%
D8233171420.818657%

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 8849 8237 8 8 0.09% 0.10%
B 8849 8237 1363 1363 15.40% 16.55%
C 8849 8237 0 0 0.00% 0.00%
D 8849 8235 1125 1125 12.71% 13.66%

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 12 189 218385 1066.21 1003 977 203.9
A 15 174 46047 221.03 1003 977 203.9
A 8 15 26974 127.49 1003 977 203.9
B 4 239 4507281 27915.97 839 814 161.4
B 3 64 312334 1929.76 839 814 161.4
B 4 173 106508 654.74 839 814 161.4
C 13 61 7128 26.99 988 990 227.4
C 8 222 5051 17.85 988 990 227.4
C 14 234 3292 10.12 988 990 227.4
D 1 52 4201799 20051.43 873 845 209.5
D 14 34 387060 1843.43 873 845 209.5
D 8 195 213807 1016.48 873 845 209.5

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