ASTROSAT CZTI

Data Quality Report

Orbit 36730

Creation date: 2024-06-27T21:30:53.960345
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_101T01_9000005238_36730cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36730cztM0_level2_quad_clean.evt
Size (bytes)449,441,28058,383,360
Size428.6 MB 55.7 MB
Events in quadrant A2,965,940345,004
Events in quadrant B3,226,800346,432
Events in quadrant C3,569,418336,335
Events in quadrant D3,443,875322,987

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125493
B0133552
C0141542
D0140772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5970170.284757%
B5970590.988275%
C59701762.948074%
D59701382.311558%

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 7282 5971 8 8 0.11% 0.13%
B 7282 5970 39 39 0.54% 0.65%
C 7282 5971 142 142 1.95% 2.38%
D 7282 5971 121 121 1.66% 2.03%

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 240187 1734.03 679 665 138.1
A 9 143 44204 315.2 679 665 138.1
A 7 3 38815 276.19 679 665 138.1
B 0 213 128892 983.32 674 655 130.4
B 5 255 112239 855.62 674 655 130.4
B 0 189 108830 829.48 674 655 130.4
C 14 254 416469 2726.73 648 653 152.5
C 0 10 328829 2152.03 648 653 152.5
C 15 214 254280 1663.17 648 653 152.5
D 13 171 372281 2289.58 652 632 162.3
D 7 223 128803 789.61 652 632 162.3
D 2 250 115684 708.79 652 632 162.3

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