ASTROSAT CZTI

Data Quality Report

Orbit 15246

Creation date: 2024-06-27T17:05:49.313038
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/AS1T02_072T01_9000002250_15246cztM0_level2.evt modeM0/AS1T02_072T01_9000002250_15246cztM0_level2_quad_clean.evt
Size (bytes)535,265,280137,393,280
Size510.5 MB 131.0 MB
Events in quadrant A3,613,456914,372
Events in quadrant B3,873,582926,571
Events in quadrant C4,767,707906,099
Events in quadrant D3,440,703886,376

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157643
B0164962
C0189432
D0157862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7581981.292705%
B75812012.651365%
C75812753.627490%
D75811021.345469%

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 7762 7573 5 5 0.06% 0.07%
B 7762 7573 39 39 0.50% 0.51%
C 7762 7573 99 99 1.28% 1.31%
D 7762 7573 23 23 0.30% 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 12 189 180066 1009.76 870 850 177.5
A 0 253 52376 290.31 870 850 177.5
A 9 143 27909 152.46 870 850 177.5
B 10 16 163625 988.28 874 849 164.7
B 0 197 98031 590.03 874 849 164.7
B 0 189 72939 437.69 874 849 164.7
C 3 233 901837 4632.51 844 847 194.5
C 4 254 564154 2896.29 844 847 194.5
C 13 61 6173 27.38 844 847 194.5
D 7 38 80091 380.89 853 826 208.1
D 2 33 40994 193.02 853 826 208.1
D 2 16 38548 181.26 853 826 208.1

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