ASTROSAT CZTI

Data Quality Report

Orbit 31130

Creation date: 2024-06-27T20:23:59.542303
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/AS1T04_018T01_9000004494_31130cztM0_level2.evt modeM0/AS1T04_018T01_9000004494_31130cztM0_level2_quad_clean.evt
Size (bytes)658,800,00094,167,360
Size628.3 MB 89.8 MB
Events in quadrant A3,735,787592,759
Events in quadrant B6,045,002581,668
Events in quadrant C4,059,685570,739
Events in quadrant D5,582,348562,375

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160612
B0239112
C0168232
D0220432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7831951.213127%
B78311832.336866%
C78322202.808989%
D78322102.681307%

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 9301 7833 0 0 0.00% 0.00%
B 9301 7833 7 7 0.08% 0.09%
C 9302 7834 11 11 0.12% 0.14%
D 9302 7834 80 80 0.86% 1.02%

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 13 254 14105 67.65 966 945 194.5
A 3 137 10087 46.99 966 945 194.5
A 0 226 7874 35.62 966 945 194.5
B 6 159 2111395 11585.5 955 928 182.2
B 0 190 82882 449.89 955 928 182.2
B 12 111 23388 123.3 955 928 182.2
C 0 10 169723 776.11 928 934 217.5
C 14 238 148558 678.79 928 934 217.5
C 14 225 79966 363.4 928 934 217.5
D 8 195 1481314 6007.58 926 907 246.4
D 13 174 361435 1463.04 926 907 246.4
D 2 250 135489 546.14 926 907 246.4

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