ASTROSAT CZTI

Data Quality Report

Orbit 22941

Creation date: 2024-06-27T18:47:50.198395
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/AS1A08_009T01_9000003390_22941cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22941cztM0_level2_quad_clean.evt
Size (bytes)460,710,720115,876,800
Size439.4 MB 110.5 MB
Events in quadrant A3,006,554780,911
Events in quadrant B3,112,731809,326
Events in quadrant C3,188,682762,818
Events in quadrant D4,225,023725,092

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129002
B0131972
C0134582
D0168862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6180100.161812%
B6180110.177994%
C6180941.521036%
D61802183.527508%

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 7500 6181 0 0 0.00% 0.00%
B 7500 6181 1 1 0.01% 0.02%
C 7500 6181 25 25 0.33% 0.40%
D 7500 6181 156 156 2.08% 2.52%

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 9881 59.04 779 765 154.4
A 0 226 6739 38.69 779 765 154.4
A 3 137 6255 35.56 779 765 154.4
B 12 111 16924 112.03 785 771 144.2
B 0 189 15795 104.2 785 771 144.2
B 11 111 14861 97.72 785 771 144.2
C 14 238 123082 709.89 749 753 172.3
C 0 10 105810 609.66 749 753 172.3
C 7 247 29870 168.97 749 753 172.3
D 13 172 585266 3275.22 742 723 178.5
D 1 52 352421 1970.58 742 723 178.5
D 7 238 191286 1067.73 742 723 178.5

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