ASTROSAT CZTI

Data Quality Report

Orbit 32905

Creation date: 2024-06-27T20:43:18.641024
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/AS1C07_005T01_9000004748_32905cztM0_level2.evt modeM0/AS1C07_005T01_9000004748_32905cztM0_level2_quad_clean.evt
Size (bytes)555,721,92085,161,600
Size530.0 MB 81.2 MB
Events in quadrant A2,565,671578,093
Events in quadrant B3,557,092573,365
Events in quadrant C2,579,214587,269
Events in quadrant D7,790,008489,223

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109672
B0137671
C0107161
D0266461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4990170.340681%
B49903517.034068%
C4990440.881764%
D4990121524.348697%

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 6842 4991 7 7 0.10% 0.14%
B 6842 4991 226 226 3.30% 4.53%
C 6842 4991 29 29 0.42% 0.58%
D 6842 4991 1347 1347 19.69% 26.99%

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 14 63 244822 2107.21 583 571 115.9
A 0 31 29659 250.95 583 571 115.9
A 0 135 23516 197.95 583 571 115.9
B 5 172 928123 8636.07 569 556 107.4
B 0 219 92186 853.12 569 556 107.4
B 0 230 88976 823.23 569 556 107.4
C 0 10 163929 1243.25 572 577 131.4
C 14 67 96978 733.69 572 577 131.4
C 1 241 51035 384.03 572 577 131.4
D 8 195 2741952 20291.95 527 515 135.1
D 12 227 1687679 12488.29 527 515 135.1
D 10 203 660452 4884.81 527 515 135.1

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