ASTROSAT CZTI

Data Quality Report

Orbit 36097

Creation date: 2022-08-10T09:42:32.051410
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/AS1T04_069T01_9000005158_36097cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36097cztM0_level2_quad_clean.evt
Size (bytes)393,341,76064,722,240
Size375.1 MB 61.7 MB
Events in quadrant A2,579,385407,457
Events in quadrant B2,756,244406,670
Events in quadrant C2,764,636390,414
Events in quadrant D3,445,279377,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112073
B0115972
C0115862
D0138722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A539080.148423%
B5390350.649351%
C5390551.020408%
D53901653.061224%

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 7093 5391 0 0 0.00% 0.00%
B 7093 5391 18 18 0.25% 0.33%
C 7093 5391 46 46 0.65% 0.85%
D 7092 5390 127 127 1.79% 2.36%

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 182097 1442.64 616 604 125.8
A 13 6 12721 96.32 616 604 125.8
A 3 137 6537 47.16 616 604 125.8
B 5 172 126498 1059.37 612 595 118.8
B 0 214 41677 345.67 612 595 118.8
B 0 190 37792 312.98 612 595 118.8
C 15 214 242351 1747.4 590 591 138.4
C 0 10 206631 1489.22 590 591 138.4
C 15 159 8020 53.7 590 591 138.4
D 12 6 548345 3783.27 587 571 144.8
D 1 52 193403 1331.82 587 571 144.8
D 13 249 142223 978.34 587 571 144.8

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