ASTROSAT CZTI

Data Quality Report

Orbit 20109

Creation date: 2024-06-27T18:11:25.961993
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/AS1A05_180T01_9000002992_20109cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20109cztM0_level2_quad_clean.evt
Size (bytes)961,640,64097,107,840
Size917.1 MB 92.6 MB
Events in quadrant A9,354,822477,240
Events in quadrant B10,244,303589,127
Events in quadrant C3,966,348666,822
Events in quadrant D5,024,772657,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330282
B0358332
C0165002
D0201902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7894275334.874588%
B7894278935.330631%
C78941852.343552%
D78943003.800355%

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 8964 7895 1558 1558 17.38% 19.73%
B 8964 7896 2138 2138 23.85% 27.08%
C 8964 7896 0 0 0.00% 0.00%
D 8964 7896 134 134 1.49% 1.70%

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 14 238 5719336 35494.09 802 788 161.1
A 14 254 403755 2501.15 802 788 161.1
A 14 237 137953 851.36 802 788 161.1
B 10 245 6609692 38235.78 898 875 172.8
B 4 80 44097 250.06 898 875 172.8
B 0 183 33713 189.99 898 875 172.8
C 14 238 152167 669.74 968 976 225.7
C 3 233 30793 132.08 968 976 225.7
C 0 207 10820 43.61 968 976 225.7
D 1 52 778697 3289.33 978 952 236.4
D 7 238 373436 1575.35 978 952 236.4
D 7 38 52060 216.15 978 952 236.4

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