ASTROSAT CZTI

Data Quality Report

Orbit 39465

Creation date: 2024-06-27T22:04:52.993211
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/AS1A12_044T16_9000005478_39465cztM0_level2.fits modeM0/AS1A12_044T16_9000005478_39465cztM0_level2_quad_clean.evt
Size (bytes)468,956,16096,140,160
Size447.2 MB 91.7 MB
Events in quadrant A4,523,326645,675
Events in quadrant B3,149,546665,452
Events in quadrant C5,515,835596,868
Events in quadrant D3,708,114586,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173882
B0134491
C0203421
D0151561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59581662.786170%
B59581181.980530%
C595863010.574018%
D59581602.685465%

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 9334 5960 115 115 1.23% 1.93%
B 9334 5960 62 62 0.66% 1.04%
C 9334 5960 543 543 5.82% 9.11%
D 9334 5960 141 141 1.51% 2.37%

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 15 222 1327907 9980.12 655 641 133.0
A 10 83 461516 3465.46 655 641 133.0
A 15 174 115494 863.61 655 641 133.0
B 5 255 349514 2732.68 654 635 127.7
B 8 3 204754 1598.81 654 635 127.7
B 0 230 17298 130.52 654 635 127.7
C 15 208 2746502 18846.95 622 626 145.7
C 15 214 242369 1659.26 622 626 145.7
C 9 187 95362 650.24 622 626 145.7
D 2 249 575452 3685.44 638 620 156.0
D 12 227 315478 2018.66 638 620 156.0
D 13 249 123998 791.02 638 620 156.0

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