ASTROSAT CZTI

Data Quality Report

Orbit 35498

Creation date: 2022-04-22T15:45:10.034553
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_097T22_9000005082_35498cztM0_level2.evt modeM0/AS1A11_097T22_9000005082_35498cztM0_level2_quad_clean.evt
Size (bytes)514,108,80068,086,080
Size490.3 MB 64.9 MB
Events in quadrant A4,730,421380,015
Events in quadrant B4,313,919420,748
Events in quadrant C3,103,457436,725
Events in quadrant D3,027,802417,769

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178773
B0166162
C0125952
D0129522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A580873212.603306%
B58085499.452479%
C5808621.067493%
D5808831.429063%

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 7181 5809 663 663 9.23% 11.41%
B 7181 5809 399 399 5.56% 6.87%
C 7181 5809 52 52 0.72% 0.90%
D 7181 5809 76 76 1.06% 1.31%

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 15 169 2326867 19401.64 594 582 119.9
A 10 83 104290 864.94 594 582 119.9
A 13 254 7550 58.11 594 582 119.9
B 5 236 1169295 9541.2 635 617 122.5
B 5 172 470137 3833.21 635 617 122.5
B 0 219 100805 817.94 635 617 122.5
C 0 10 257764 1699.44 646 650 151.3
C 15 214 244564 1612.19 646 650 151.3
C 14 67 38283 248.74 646 650 151.3
D 7 80 135487 860.86 641 623 156.7
D 13 249 95720 607.02 641 623 156.7
D 7 223 88906 563.53 641 623 156.7

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