ASTROSAT CZTI

Data Quality Report

Orbit 35599

Creation date: 2022-04-29T11:01:21.438579
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_065T04_9000005098_35599cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35599cztM0_level2_quad_clean.evt
Size (bytes)432,017,28057,104,640
Size412.0 MB 54.5 MB
Events in quadrant A2,733,944339,839
Events in quadrant B3,561,126337,647
Events in quadrant C3,098,423337,904
Events in quadrant D3,302,936314,969

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116593
B0143412
C0124412
D0137742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A569180.140573%
B56912073.637322%
C56911031.809875%
D5691851.493586%

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 7154 5692 1 1 0.01% 0.02%
B 7154 5692 129 129 1.80% 2.27%
C 7154 5692 76 76 1.06% 1.34%
D 7154 5692 75 75 1.05% 1.32%

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 141589 1057.57 657 643 133.3
A 15 169 31027 227.98 657 643 133.3
A 8 6 7554 51.86 657 643 133.3
B 5 172 839339 6609.49 646 629 126.9
B 15 85 100765 789.13 646 629 126.9
B 4 81 35536 275.09 646 629 126.9
C 0 10 355858 2381.3 636 640 149.2
C 15 214 237842 1590.15 636 640 149.2
C 0 207 11462 72.55 636 640 149.2
D 12 17 290618 1842.41 635 616 157.4
D 7 80 226550 1435.38 635 616 157.4
D 10 199 90959 573.96 635 616 157.4

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