ASTROSAT CZTI

Data Quality Report

Orbit 07820

Creation date: 2024-06-27T15:24:26.725611
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/AS1G06_077T02_9000001076_07820cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07820cztM0_level2_quad_clean.evt
Size (bytes)555,615,36093,435,840
Size529.9 MB 89.1 MB
Events in quadrant A3,717,767565,480
Events in quadrant B4,067,548584,476
Events in quadrant C3,919,966585,637
Events in quadrant D4,593,086552,593

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016522128
B017228174
C017082131
D019090182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01582
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77753394.360129%
B77683574.595778%
C77772883.703227%
D77654776.142949%

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 7838 7806 6 6 0.08% 0.08%
B 7838 7803 17 17 0.22% 0.22%
C 7839 7808 38 38 0.48% 0.49%
D 7839 7809 142 142 1.81% 1.82%

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 0 128 51477 259.15 945 924 195.1
A 13 14 15639 75.43 945 924 195.1
A 0 226 8760 40.17 945 924 195.1
B 10 246 191493 1038.87 951 928 183.4
B 4 239 70853 381.2 951 928 183.4
B 0 219 65675 352.97 951 928 183.4
C 9 54 235270 1082.97 932 934 216.4
C 1 16 35872 161.46 932 934 216.4
C 12 4 9725 40.63 932 934 216.4
D 5 233 380832 1675.71 923 898 226.7
D 2 152 259526 1140.69 923 898 226.7
D 13 104 209151 918.51 923 898 226.7

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