ASTROSAT CZTI

Data Quality Report

Orbit 09146

Creation date: 2024-06-27T15:41:54.778286
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/AS1C02_042T01_9000001278_09146cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09146cztM0_level2_quad_clean.evt
Size (bytes)686,085,120143,527,680
Size654.3 MB 136.9 MB
Events in quadrant A5,345,190919,465
Events in quadrant B4,612,207950,195
Events in quadrant C4,369,027940,162
Events in quadrant D5,790,764861,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249182759
B0228732559
C0224172493
D0278453706

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265
B0263
C0268
D0266

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022230
B022226
C022220
D022224

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9739630.646884%
B9773350.358130%
C9779170.173842%
D96444734.904604%

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 13528 10349 31 31 0.23% 0.30%
B 13528 10339 9 9 0.07% 0.09%
C 13528 10378 0 0 0.00% 0.00%
D 13528 10239 431 431 3.19% 4.21%

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 8 5 856249 3791.87 1123 1103 225.5
A 13 251 66055 288.01 1123 1103 225.5
A 1 162 45884 198.57 1123 1103 225.5
B 0 219 64357 299.09 1143 1116 211.4
B 4 80 35161 161.01 1143 1116 211.4
B 4 48 27953 126.92 1143 1116 211.4
C 4 239 38695 148.1 1108 1114 253.8
C 13 61 8533 29.24 1108 1114 253.8
C 9 68 5363 16.74 1108 1114 253.8
D 1 52 1132177 4403.41 1060 1026 256.9
D 2 14 434807 1688.65 1060 1026 256.9
D 7 71 84775 326.02 1060 1026 256.9

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