ASTROSAT CZTI

Data Quality Report

Orbit 14074

Creation date: 2024-06-27T16:50:02.888412
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/AS1G08_055T01_9000002076_14074cztM0_level2.evt modeM0/AS1G08_055T01_9000002076_14074cztM0_level2_quad_clean.evt
Size (bytes)602,763,840141,206,400
Size574.8 MB 134.7 MB
Events in quadrant A5,366,511934,557
Events in quadrant B4,330,488955,479
Events in quadrant C3,808,067918,610
Events in quadrant D4,187,448892,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215213
B0183332
C0170662
D0180902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82823334.020768%
B82821932.330355%
C8282710.857281%
D8282851.026322%

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 8658 8285 138 138 1.59% 1.67%
B 8658 8285 24 24 0.28% 0.29%
C 8658 8285 3 3 0.03% 0.04%
D 8658 8285 11 11 0.13% 0.13%

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 15 222 1367022 6911.48 981 962 197.7
A 12 189 131991 662.93 981 962 197.7
A 8 15 68046 339.41 981 962 197.7
B 10 16 193763 1037.66 991 966 185.8
B 0 189 51566 272.34 991 966 185.8
B 0 190 37841 198.47 991 966 185.8
C 3 233 47131 210.49 950 952 219.4
C 0 207 31247 138.09 950 952 219.4
C 15 176 12511 52.69 950 952 219.4
D 2 152 148206 611.84 941 916 240.7
D 10 172 117807 485.56 941 916 240.7
D 8 195 116873 481.68 941 916 240.7

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