ASTROSAT CZTI

Data Quality Report

Orbit 04391

Creation date: 2024-06-27T14:41:23.232090
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/AS1G05_230T02_9000000548_04391cztM0_level2.evt modeM0/AS1G05_230T02_9000000548_04391cztM0_level2_quad_clean.evt
Size (bytes)564,416,64090,123,840
Size538.3 MB 85.9 MB
Events in quadrant A3,392,716559,867
Events in quadrant B3,962,439552,788
Events in quadrant C3,431,204552,725
Events in quadrant D5,784,761528,042

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158148
B0172882
C0160167
D0226775

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7700881.142857%
B77021812.350039%
C7700460.597403%
D77012853.700818%

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 8002 7703 1 1 0.01% 0.01%
B 8002 7703 58 58 0.72% 0.75%
C 8002 7703 13 13 0.16% 0.17%
D 8002 7703 235 235 2.94% 3.05%

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 13 14 20549 109.99 867 846 179.1
A 13 248 13924 73.0 867 846 179.1
A 13 251 12465 64.86 867 846 179.1
B 14 167 476766 2848.22 871 849 167.1
B 10 16 64054 378.26 871 849 167.1
B 0 187 24795 143.31 871 849 167.1
C 14 48 110695 567.3 836 835 193.7
C 9 16 23535 117.22 836 835 193.7
C 9 247 17855 87.89 836 835 193.7
D 2 63 1821813 9100.76 827 801 200.1
D 9 35 219825 1094.6 827 801 200.1
D 2 37 171863 854.91 827 801 200.1

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