ASTROSAT CZTI

Data Quality Report

Orbit 31480

Creation date: 2024-06-27T20:26:32.906389
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/AS1A10_058T08_9000004532_31480cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31480cztM0_level2_quad_clean.evt
Size (bytes)115,081,9205,604,480
Size109.8 MB 5.3 MB
Events in quadrant A683,32021,755
Events in quadrant B1,117,0158,732
Events in quadrant C708,18620,262
Events in quadrant D884,90919,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043141523
B076103514
C047021812
D052991808

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053
B032
C043
D032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04214
B04418
C04113
D04315

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132650.377074%
B1269534.176517%
C132060.454545%
D1319151.137225%

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 2827 1381 0 0 0.00% 0.00%
B 2814 1305 38 38 1.35% 2.91%
C 2814 1366 0 0 0.00% 0.00%
D 2819 1374 15 15 0.53% 1.09%

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 2665 65.68 176 173 37.9
A 0 13 1931 46.34 176 173 37.9
A 3 137 1676 39.61 176 173 37.9
B 6 159 348637 10544.41 162 159 33.0
B 12 1 107059 3234.63 162 159 33.0
B 0 199 5218 153.08 162 159 33.0
C 14 238 26936 659.28 165 166 40.6
C 0 10 19827 484.2 165 166 40.6
C 10 22 7438 179.09 165 166 40.6
D 8 195 180830 4358.22 164 160 41.5
D 13 249 29444 706.4 164 160 41.5
D 12 79 26635 638.64 164 160 41.5

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