ASTROSAT CZTI

Data Quality Report

Orbit 38427

Creation date: 2024-06-27T21:52:36.344132
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_018T01_9000005386_38427cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38427cztM0_level2_quad_clean.evt
Size (bytes)981,000,000249,966,720
Size935.6 MB 238.4 MB
Events in quadrant A8,325,9301,680,534
Events in quadrant B9,066,2731,684,559
Events in quadrant C7,330,0641,656,469
Events in quadrant D10,392,8631,478,664

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341985
B0372334
C0315934
D0416544

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154721170.756205%
B154724432.863237%
C15472180.116339%
D154726884.446743%

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 19800 15475 67 67 0.34% 0.43%
B 19800 15475 290 290 1.46% 1.87%
C 19800 15475 8 8 0.04% 0.05%
D 19800 15475 548 548 2.77% 3.54%

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 1014850 2923.77 1725 1689 346.5
A 9 143 499277 1435.94 1725 1689 346.5
A 12 189 88813 251.42 1725 1689 346.5
B 4 232 806951 2509.37 1693 1649 320.9
B 5 184 397539 1233.62 1693 1649 320.9
B 0 229 321559 996.86 1693 1649 320.9
C 15 214 651401 1673.48 1678 1687 388.2
C 0 10 48912 121.64 1678 1687 388.2
C 15 159 34727 85.1 1678 1687 388.2
D 2 250 1848784 4625.66 1653 1606 399.3
D 12 235 472336 1178.79 1653 1606 399.3
D 2 153 388381 968.55 1653 1606 399.3

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