ASTROSAT CZTI

Data Quality Report

Orbit 18290

Creation date: 2024-06-27T17:47:56.034635
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/AS1A06_006T01_9000002720_18290cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18290cztM0_level2_quad_clean.evt
Size (bytes)559,998,72089,974,080
Size534.1 MB 85.8 MB
Events in quadrant A3,371,305577,722
Events in quadrant B3,392,733585,834
Events in quadrant C3,190,856567,787
Events in quadrant D6,542,942518,554

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145722
B0144432
C0138932
D0240512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6810961.409692%
B6811580.851564%
C6811470.690060%
D681174110.879460%

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 8435 6812 36 36 0.43% 0.53%
B 8436 6813 4 4 0.05% 0.06%
C 8436 6813 0 0 0.00% 0.00%
D 8436 6813 637 637 7.55% 9.35%

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 15 174 185723 1116.64 808 789 165.6
A 9 143 78303 468.03 808 789 165.6
A 0 226 7029 37.68 808 789 165.6
B 7 220 68074 426.72 815 794 157.7
B 0 197 44055 274.38 815 794 157.7
B 0 244 24827 152.43 815 794 157.7
C 14 238 121974 659.02 779 782 183.9
C 3 233 16847 87.36 779 782 183.9
C 0 207 15435 79.68 779 782 183.9
D 7 238 2305855 12372.49 756 734 186.3
D 1 52 472698 2533.22 756 734 186.3
D 12 110 407754 2184.64 756 734 186.3

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