ASTROSAT CZTI

Data Quality Report

Orbit 34203

Creation date: 2022-01-25T03:01:13.309117
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_047T15_9000004882_34203cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34203cztM0_level2_quad_clean.evt
Size (bytes)672,563,52068,964,480
Size641.4 MB 65.8 MB
Events in quadrant A2,662,599450,973
Events in quadrant B7,193,398417,030
Events in quadrant C3,158,229455,995
Events in quadrant D7,000,883396,903

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111803
B0249132
C0125612
D0244832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523390.171985%
B5233176833.785591%
C52331512.885534%
D523392917.752723%

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 7145 5234 5 5 0.07% 0.10%
B 7145 5234 1523 1523 21.32% 29.10%
C 7145 5234 86 86 1.20% 1.64%
D 7145 5234 820 820 11.48% 15.67%

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 9 143 35841 266.48 663 652 132.1
A 10 83 23654 174.19 663 652 132.1
A 13 6 21564 158.36 663 652 132.1
B 5 31 1782674 16319.59 580 567 109.2
B 5 15 1438217 13165.24 580 567 109.2
B 5 14 632856 5790.17 580 567 109.2
C 0 10 349174 2347.65 641 647 148.5
C 15 214 236582 1589.24 641 647 148.5
C 0 207 21059 137.49 641 647 148.5
D 8 195 1719341 10416.01 605 595 165.0
D 12 217 1445267 8755.05 605 595 165.0
D 10 118 528815 3201.14 605 595 165.0

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