ASTROSAT CZTI

Data Quality Report

Orbit 13908

Creation date: 2024-06-27T16:47:43.949401
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/AS1A04_010T02_9000002048_13908cztM0_level2.evt modeM0/AS1A04_010T02_9000002048_13908cztM0_level2_quad_clean.evt
Size (bytes)608,624,64081,835,200
Size580.4 MB 78.0 MB
Events in quadrant A2,969,348589,563
Events in quadrant B2,996,545596,187
Events in quadrant C2,983,080589,000
Events in quadrant D9,083,067289,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126422
B0127702
C0126782
D0310192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5902370.626906%
B5902570.965774%
C5902320.542189%
D5902263944.713656%

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 7158 5904 0 0 0.00% 0.00%
B 7158 5904 1 1 0.01% 0.02%
C 7158 5903 0 0 0.00% 0.00%
D 7158 5904 2326 2326 32.50% 39.40%

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 9 143 34270 221.16 756 742 151.6
A 1 162 16877 106.43 756 742 151.6
A 0 226 6776 39.8 756 742 151.6
B 0 189 22762 154.67 751 734 142.4
B 4 173 20051 135.64 751 734 142.4
B 12 111 16209 108.66 751 734 142.4
C 3 233 97070 566.77 740 745 170.0
C 13 61 5248 26.5 740 745 170.0
C 14 220 1822 6.34 740 745 170.0
D 13 122 6975795 59388.56 491 480 117.5
D 1 52 129837 1101.36 491 480 117.5
D 13 189 45034 379.34 491 480 117.5

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