ASTROSAT CZTI

Data Quality Report

Orbit 16442

Creation date: 2024-06-27T17:22:44.710427
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/AS1A05_069T04_9000002428_16442cztM0_level2.evt modeM0/AS1A05_069T04_9000002428_16442cztM0_level2_quad_clean.evt
Size (bytes)731,761,92081,711,360
Size697.9 MB 77.9 MB
Events in quadrant A11,200,770372,700
Events in quadrant B3,628,550591,468
Events in quadrant C3,794,229551,289
Events in quadrant D3,124,904532,112

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373573
B0146872
C0153262
D0134052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6099400165.600918%
B6099600.983768%
C60991091.787178%
D6099220.360715%

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 7425 6101 3762 3762 50.67% 61.66%
B 7425 6101 19 19 0.26% 0.31%
C 7425 6101 2 2 0.03% 0.03%
D 7425 6101 8 8 0.11% 0.13%

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 15 174 9619218 116913.45 411 404 82.3
A 0 226 3699 40.05 411 404 82.3
A 12 194 3054 32.21 411 404 82.3
B 15 35 210381 1423.96 783 765 147.2
B 3 64 66764 448.34 783 765 147.2
B 0 198 62513 419.47 783 765 147.2
C 3 233 732624 4220.6 745 752 173.4
C 14 238 117248 671.82 745 752 173.4
C 4 254 25139 140.64 745 752 173.4
D 5 222 143620 792.03 744 722 180.4
D 12 218 96825 532.66 744 722 180.4
D 10 70 31782 172.15 744 722 180.4

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