ASTROSAT CZTI

Data Quality Report

Orbit 34897

Creation date: 2022-03-13T00:38:59.990402
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_053T01_9000004996_34897cztM0_level2.evt modeM0/AS1A11_053T01_9000004996_34897cztM0_level2_quad_clean.evt
Size (bytes)441,144,00089,130,240
Size420.7 MB 85.0 MB
Events in quadrant A2,499,411587,349
Events in quadrant B3,013,369594,698
Events in quadrant C2,874,813598,633
Events in quadrant D4,615,362550,104

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110053
B0124712
C0117322
D0173122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525660.114155%
B5256871.655251%
C5256851.617199%
D52564728.980213%

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 7049 5257 0 0 0.00% 0.00%
B 7049 5257 67 67 0.95% 1.27%
C 7049 5257 61 61 0.87% 1.16%
D 7049 5257 387 387 5.49% 7.36%

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 62556 495.09 622 609 125.1
A 7 16 13779 105.26 622 609 125.1
A 13 254 10243 77.0 622 609 125.1
B 5 172 229508 1931.88 620 605 118.5
B 0 190 144462 1214.11 620 605 118.5
B 4 232 73710 616.99 620 605 118.5
C 15 214 237212 1668.15 611 617 141.8
C 0 10 193880 1362.63 611 617 141.8
C 14 67 23828 163.65 611 617 141.8
D 8 195 1020649 7173.79 585 567 142.2
D 10 118 665568 4676.66 585 567 142.2
D 7 223 188390 1320.88 585 567 142.2

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