ASTROSAT CZTI

Data Quality Report

Orbit 36642

Creation date: 2024-06-27T21:29:37.794812
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_049T04_9000005230_36642cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36642cztM0_level2_quad_clean.evt
Size (bytes)502,073,28071,311,680
Size478.8 MB 68.0 MB
Events in quadrant A2,748,332463,410
Events in quadrant B2,873,084455,975
Events in quadrant C2,965,350445,767
Events in quadrant D6,234,812398,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116712
B0121421
C0123161
D0223291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5663100.176585%
B5663190.335511%
C5663651.147802%
D566381314.356348%

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 7035 5664 1 1 0.01% 0.02%
B 7035 5664 6 6 0.09% 0.11%
C 7035 5664 43 43 0.61% 0.76%
D 7035 5664 815 815 11.58% 14.39%

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 182979 1366.96 660 647 133.4
A 13 6 10075 70.68 660 647 133.4
A 13 254 9358 65.31 660 647 133.4
B 0 190 114985 904.76 652 635 126.4
B 5 255 71797 563.05 652 635 126.4
B 0 229 46190 360.44 652 635 126.4
C 15 214 236194 1604.5 629 634 146.8
C 0 10 215019 1460.26 629 634 146.8
C 14 254 39059 261.73 629 634 146.8
D 12 235 2957680 19766.65 609 592 149.6
D 12 6 388505 2593.0 609 592 149.6
D 2 250 135199 899.78 609 592 149.6

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