ASTROSAT CZTI

Data Quality Report

Orbit 31061

Creation date: 2024-06-27T20:22:53.616562
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_002T01_9000004490_31061cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31061cztM0_level2_quad_clean.evt
Size (bytes)590,175,360122,898,240
Size562.8 MB 117.2 MB
Events in quadrant A3,026,924855,118
Events in quadrant B5,195,410841,252
Events in quadrant C3,348,189821,544
Events in quadrant D5,891,324779,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130291
B0197181
C0138551
D0219201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6098791.295507%
B60991402.295458%
C60991662.721758%
D60993445.640269%

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 7273 6099 2 2 0.03% 0.03%
B 7274 6100 7 7 0.10% 0.11%
C 7274 6100 16 16 0.22% 0.26%
D 7274 6100 236 236 3.24% 3.87%

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 96 14534 89.32 780 765 154.2
A 13 254 12845 78.36 780 765 154.2
A 3 137 7066 40.87 780 765 154.2
B 6 159 1839523 12990.66 765 747 141.5
B 0 183 188089 1323.54 765 747 141.5
B 5 172 41632 288.85 765 747 141.5
C 14 238 122539 710.78 748 754 171.3
C 0 10 112288 650.95 748 754 171.3
C 3 233 100617 582.83 748 754 171.3
D 8 195 1681910 9418.17 750 731 178.5
D 12 1 583681 3265.76 750 731 178.5
D 13 174 317544 1774.83 750 731 178.5

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