ASTROSAT CZTI

Data Quality Report

Orbit 03011

Creation date: 2024-06-27T14:23:25.930410
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/AS1G05_238T02_9000000420_03011cztM0_level2.evt modeM0/AS1G05_238T02_9000000420_03011cztM0_level2_quad_clean.evt
Size (bytes)567,564,48072,679,680
Size541.3 MB 69.3 MB
Events in quadrant A3,563,286483,977
Events in quadrant B2,386,252496,422
Events in quadrant C8,249,267402,925
Events in quadrant D2,656,062470,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139272
B0102571
C0277681
D0112071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49292875.822682%
B4929250.507202%
C4929205041.590586%
D4929450.912964%

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 7056 4930 203 203 2.88% 4.12%
B 7056 4930 17 17 0.24% 0.34%
C 7056 4929 2133 2133 30.23% 43.27%
D 7056 4930 43 43 0.61% 0.87%

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 0 50 1297763 11368.74 561 549 114.1
A 14 249 70538 613.38 561 549 114.1
A 13 14 14199 119.63 561 549 114.1
B 2 249 60076 538.4 573 559 110.5
B 0 219 54951 492.03 573 559 110.5
B 3 27 26882 238.12 573 559 110.5
C 0 219 5893962 51586.27 491 493 114.2
C 1 192 387481 3387.35 491 493 114.2
C 6 80 21070 180.11 491 493 114.2
D 7 80 186502 1387.22 552 536 134.1
D 13 114 175896 1308.1 552 536 134.1
D 13 239 34408 252.67 552 536 134.1

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
Veto Counter