ASTROSAT CZTI

Data Quality Report

Orbit 36000

Creation date: 2022-07-19T01:53:31.094387
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_36000cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_36000cztM0_level2_quad_clean.evt
Size (bytes)449,104,320101,229,120
Size428.3 MB 96.5 MB
Events in quadrant A2,455,381696,174
Events in quadrant B2,830,789701,602
Events in quadrant C4,286,149674,065
Events in quadrant D3,700,768654,574

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101182
B0113321
C0157921
D0139481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A482890.186413%
B4828631.304888%
C48284639.589892%
D48283537.311516%

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 6921 4829 0 0 0.00% 0.00%
B 6921 4829 41 41 0.59% 0.85%
C 6921 4829 431 431 6.23% 8.93%
D 6921 4829 299 299 4.32% 6.19%

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 131712 1099.05 598 588 119.3
A 13 6 7843 60.81 598 588 119.3
A 13 254 7420 57.26 598 588 119.3
B 5 172 227509 2058.86 588 572 110.2
B 4 171 116481 1051.57 588 572 110.2
B 0 190 55206 495.66 588 572 110.2
C 9 187 1364908 10444.96 570 576 130.6
C 0 207 422577 3230.73 570 576 130.6
C 15 214 197867 1510.41 570 576 130.6
D 12 227 330115 2366.07 579 565 139.3
D 12 6 328367 2353.52 579 565 139.3
D 10 118 316134 2265.69 579 565 139.3

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