ASTROSAT CZTI

Data Quality Report

Orbit 35990

Creation date: 2022-07-19T00:53:55.656308
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_050T19_9000005156_35990cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35990cztM0_level2_quad_clean.evt
Size (bytes)554,886,720106,064,640
Size529.2 MB 101.2 MB
Events in quadrant A2,720,366726,198
Events in quadrant B3,040,754719,872
Events in quadrant C4,850,260695,370
Events in quadrant D5,799,595663,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119133
B0127092
C0182382
D0212992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A582160.103075%
B5821520.893317%
C58213706.356296%
D582158410.032640%

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 7253 5822 0 0 0.00% 0.00%
B 7253 5822 32 32 0.44% 0.55%
C 7253 5822 266 266 3.67% 4.57%
D 7253 5822 532 532 7.33% 9.14%

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 178748 1339.65 655 641 133.0
A 8 144 9343 65.45 655 641 133.0
A 13 254 8403 58.38 655 641 133.0
B 4 171 161384 1298.4 646 629 123.8
B 5 172 111848 898.3 646 629 123.8
B 0 190 78471 628.72 646 629 123.8
C 9 187 2017937 13972.35 622 627 144.4
C 15 214 240958 1664.59 622 627 144.4
C 0 10 125748 866.62 622 627 144.4
D 12 6 1310322 8733.69 619 603 150.0
D 10 118 672019 4477.25 619 603 150.0
D 12 235 500732 3335.04 619 603 150.0

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