ASTROSAT CZTI

Data Quality Report

Orbit 20220226_A07_093T11_9000004964_level2

Creation date: 2022-03-01T13:45:03.473475
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/AS1A07_093T11_9000004964cztM0_level2_bc.evt modeM0/AS1A07_093T11_9000004964cztM0_level2_quad_clean.evt
Size (bytes)460,537,920138,991,680
Size439.2 MB 132.6 MB
Events in quadrant A1,735,699956,631
Events in quadrant B3,203,523904,774
Events in quadrant C2,113,105942,496
Events in quadrant D6,348,313853,432

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163440
B0236200
C0167170
D0318350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7936290.365423%
B793695812.071573%
C7936400.504032%
D793684910.698085%

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 11099 7938 0 0 0.00% 0.00%
B 11099 7934 30 30 0.27% 0.38%
C 11099 7937 4 4 0.04% 0.05%
D 11099 7936 169 169 1.52% 2.13%

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 10 83 53298 580.78 399 392 91.1
A 15 174 44902 488.61 399 392 91.1
A 9 143 35604 386.54 399 392 91.1
B 5 172 884058 11574.93 376 368 76.3
B 5 255 532451 6969.44 376 368 76.3
B 4 171 149928 1959.0 376 368 76.3
C 15 214 324409 3542.14 387 383 91.5
C 14 67 73807 802.65 387 383 91.5
C 0 10 65407 710.82 387 383 91.5
D 8 195 3011886 30097.35 372 363 100.1
D 7 38 602931 6022.1 372 363 100.1
D 2 250 559615 5589.2 372 363 100.1

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