ASTROSAT CZTI

Data Quality Report

Orbit 35073

Creation date: 2022-03-25T00:14:26.660745
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/AS1T05_015T01_9000005026_35073cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35073cztM0_level2_quad_clean.evt
Size (bytes)1,156,933,440161,375,040
Size1.1 GB 153.9 MB
Events in quadrant A6,933,1911,003,699
Events in quadrant B8,531,5651,008,069
Events in quadrant C7,677,8461,003,571
Events in quadrant D10,984,738938,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288394
B0337143
C0306533
D04210610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13508280.207285%
B135083112.302339%
C135081060.784720%
D135074903.627749%

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 19338 13511 7 7 0.04% 0.05%
B 19338 13511 167 167 0.86% 1.24%
C 19338 13511 91 91 0.47% 0.67%
D 19338 13511 380 380 1.97% 2.81%

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 149751 430.91 1739 1712 343.5
A 13 6 25358 68.83 1739 1712 343.5
A 13 254 23721 64.06 1739 1712 343.5
B 5 172 1280525 4013.34 1712 1672 318.7
B 0 189 203520 633.45 1712 1672 318.7
B 4 232 106257 328.21 1712 1672 318.7
C 15 214 556262 1444.37 1690 1708 383.9
C 0 10 308331 798.62 1690 1708 383.9
C 14 67 157879 406.76 1690 1708 383.9
D 8 195 2433358 6109.07 1673 1633 398.1
D 13 249 585751 1467.44 1673 1633 398.1
D 2 250 379612 949.57 1673 1633 398.1

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