ASTROSAT CZTI

Data Quality Report

Orbit 14650

Creation date: 2024-06-27T16:58:01.010664
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/AS1G08_076T02_9000002164_14650cztM0_level2.evt modeM0/AS1G08_076T02_9000002164_14650cztM0_level2_quad_clean.evt
Size (bytes)571,737,60092,687,040
Size545.3 MB 88.4 MB
Events in quadrant A6,466,330583,348
Events in quadrant B3,425,543603,219
Events in quadrant C3,679,406586,468
Events in quadrant D3,299,334575,660

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238113
B0143982
C0149432
D0141952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65682613.973812%
B6568500.761267%
C6568230.350183%
D6568310.471985%

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 7554 6570 153 153 2.03% 2.33%
B 7554 6570 7 7 0.09% 0.11%
C 7554 6570 1 1 0.01% 0.02%
D 7554 6570 20 20 0.26% 0.30%

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 0 253 2637280 16058.02 796 779 164.2
A 0 23 692582 4213.53 796 779 164.2
A 0 226 51747 310.43 796 779 164.2
B 0 189 68128 440.45 805 785 152.9
B 0 219 48734 313.6 805 785 152.9
B 0 230 26365 167.3 805 785 152.9
C 3 233 640855 3558.71 774 778 179.9
C 0 207 18906 100.79 774 778 179.9
C 13 61 5497 26.24 774 778 179.9
D 13 122 99047 484.49 768 750 202.9
D 15 0 61593 299.88 768 750 202.9
D 10 199 61041 297.16 768 750 202.9

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