ASTROSAT CZTI

Data Quality Report

Orbit 31612

Creation date: 2024-06-27T20:30:57.810752
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/AS1C06_010T02_9000004618_31612cztM0_level2.evt modeM0/AS1C06_010T02_9000004618_31612cztM0_level2_quad_clean.evt
Size (bytes)84,130,56021,291,840
Size80.2 MB 20.3 MB
Events in quadrant A489,078147,810
Events in quadrant B822,301148,551
Events in quadrant C555,330145,068
Events in quadrant D623,245138,955

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02433376
B03721668
C02686424
D02923473

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224
B0224
C0226
D0213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80820.247525%
B793344.287516%
C804384.726368%
D816313.799020%

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 1307 836 0 0 0.00% 0.00%
B 1306 819 9 9 0.69% 1.10%
C 1306 829 3 3 0.23% 0.36%
D 1306 841 13 13 1.00% 1.55%

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 13 254 1688 58.54 126 124 26.7
A 0 226 1149 38.36 126 124 26.7
A 3 137 1014 33.31 126 124 26.7
B 6 159 264991 10494.55 124 121 25.2
B 5 172 43165 1705.47 124 121 25.2
B 0 182 13444 527.88 124 121 25.2
C 0 10 25253 812.5 125 126 30.9
C 14 238 21073 677.33 125 126 30.9
C 3 233 10571 337.75 125 126 30.9
D 12 218 70445 2272.7 124 121 30.9
D 8 195 52458 1691.4 124 121 30.9
D 12 233 17250 553.57 124 121 30.9

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