ASTROSAT CZTI

Data Quality Report

Orbit 36759

Creation date: 2024-06-27T21:31:17.331884
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/AS1A11_101T01_9000005238_36759cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36759cztM0_level2_quad_clean.evt
Size (bytes)631,088,64047,629,440
Size601.9 MB 45.4 MB
Events in quadrant A2,991,620345,664
Events in quadrant B8,996,60711,906
Events in quadrant C3,648,064332,694
Events in quadrant D3,062,640326,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126233
B0308962
C0145112
D0132382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6063110.181428%
B6063596898.433119%
C6063751.237011%
D6064631.038918%

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 7346 6064 3 3 0.04% 0.05%
B 7345 6062 2497 2497 34.00% 41.19%
C 7346 6064 78 78 1.06% 1.29%
D 7347 6065 54 54 0.73% 0.89%

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 10 83 240718 1700.36 695 680 141.2
A 9 143 47974 335.02 695 680 141.2
A 13 6 13783 92.82 695 680 141.2
B 12 1 8753526 880526.0 41 40 9.9
B 12 2 41131 4133.4 41 40 9.9
B 4 171 9631 964.77 41 40 9.9
C 14 254 729222 4674.12 668 672 155.9
C 15 214 261788 1675.23 668 672 155.9
C 0 10 25035 156.3 668 672 155.9
D 13 249 181767 1082.26 672 652 167.3
D 2 250 98101 582.31 672 652 167.3
D 13 171 53807 317.63 672 652 167.3

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