ASTROSAT CZTI

Data Quality Report

Orbit 35381

Creation date: 2022-04-16T11:20:25.634693
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_099T01_9000005068_35381cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35381cztM0_level2_quad_clean.evt
Size (bytes)830,232,00076,919,040
Size791.8 MB 73.4 MB
Events in quadrant A2,748,029565,301
Events in quadrant B9,288,903374,486
Events in quadrant C3,234,659553,589
Events in quadrant D9,509,145456,489

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114093
B0312842
C0127052
D0319522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5384190.352897%
B5384287853.454681%
C53841282.377415%
D5384187634.843982%

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 7117 5385 9 9 0.13% 0.17%
B 7117 5385 2517 2517 35.37% 46.74%
C 7117 5385 88 88 1.24% 1.63%
D 7117 5385 2104 2104 29.56% 39.07%

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 122713 933.2 644 632 130.8
A 14 254 63255 478.7 644 632 130.8
A 15 237 31107 232.95 644 632 130.8
B 4 251 5065097 54956.04 472 461 92.2
B 5 14 549597 5958.64 472 461 92.2
B 5 31 523703 5677.67 472 461 92.2
C 0 10 512637 3587.92 614 618 142.7
C 15 214 226183 1580.62 614 618 142.7
C 3 233 79122 550.11 614 618 142.7
D 7 80 5524167 39309.39 569 552 140.5
D 12 235 602770 4285.75 569 552 140.5
D 1 52 400255 2844.53 569 552 140.5

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