ASTROSAT CZTI

Data Quality Report

Orbit 17602

Creation date: 2024-06-27T17:38:30.711107
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/AS1A05_056T01_9000002604_17602cztM0_level2.evt modeM0/AS1A05_056T01_9000002604_17602cztM0_level2_quad_clean.evt
Size (bytes)467,593,92072,604,800
Size445.9 MB 69.2 MB
Events in quadrant A3,300,483444,670
Events in quadrant B3,356,789449,321
Events in quadrant C3,864,069429,573
Events in quadrant D3,205,910429,061

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134992
B0136963
C0156872
D0135172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63951001.563722%
B63941101.720363%
C63941993.112293%
D6394881.376290%

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 7630 6396 1 1 0.01% 0.02%
B 7629 6394 1 1 0.01% 0.02%
C 7629 6394 0 0 0.00% 0.00%
D 7629 6394 2 2 0.03% 0.03%

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 15 191 8072 42.71 856 841 169.3
A 0 226 7498 39.32 856 841 169.3
A 3 137 6189 31.59 856 841 169.3
B 12 111 19153 113.11 856 835 161.9
B 11 111 16577 97.21 856 835 161.9
B 14 111 14864 86.63 856 835 161.9
C 3 233 485908 2543.87 825 833 190.7
C 14 238 129114 672.74 825 833 190.7
C 5 218 31094 158.7 825 833 190.7
D 4 239 22952 109.69 838 815 201.8
D 2 234 21746 103.72 838 815 201.8
D 1 52 11360 52.25 838 815 201.8

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