ASTROSAT CZTI

Data Quality Report

Orbit 34749

Creation date: 2022-03-03T13:09:38.534795
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/AS1A10_094T38_9000004988_34749cztM0_level2.evt modeM0/AS1A10_094T38_9000004988_34749cztM0_level2_quad_clean.evt
Size (bytes)321,972,48055,529,280
Size307.1 MB 53.0 MB
Events in quadrant A1,715,881367,299
Events in quadrant B2,163,809361,705
Events in quadrant C1,861,854359,240
Events in quadrant D3,759,394333,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075471
B088481
C078581
D0136981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A366960.163532%
B36691504.088307%
C3669280.763151%
D366945112.292178%

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 4981 3670 0 0 0.00% 0.00%
B 4981 3670 91 91 1.83% 2.48%
C 4981 3670 18 18 0.36% 0.49%
D 4981 3670 344 344 6.91% 9.37%

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 15 223 36919 427.85 418 408 85.3
A 10 83 29193 337.31 418 408 85.3
A 9 143 17951 205.58 418 408 85.3
B 5 172 254418 3181.38 411 400 79.8
B 5 255 121342 1514.7 411 400 79.8
B 0 190 88771 1106.78 411 400 79.8
C 15 214 156073 1628.7 402 404 95.6
C 0 10 82580 859.77 402 404 95.6
C 14 67 38321 396.71 402 404 95.6
D 2 250 727480 7348.89 378 368 98.9
D 8 195 669442 6762.31 378 368 98.9
D 1 52 351434 3548.21 378 368 98.9

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