ASTROSAT CZTI

Data Quality Report

Orbit 47171

Creation date: 2024-06-27T23:30:27.352020
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/AS1A13_071T08_9000006292_47171cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_47171cztM0_level2_quad_clean.evt
Size (bytes)398,638,08098,870,400
Size380.2 MB 94.3 MB
Events in quadrant A5,805,609664,848
Events in quadrant B3,068,527686,827
Events in quadrant C2,465,968643,059
Events in quadrant D2,960,322589,696

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212121
B0131471
C0118871
D0132831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58651372.335891%
B5866771.312649%
C5866100.170474%
D58661011.721787%

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 7090 5866 20 20 0.28% 0.34%
B 7091 5866 29 29 0.41% 0.49%
C 7091 5866 0 0 0.00% 0.00%
D 7091 5867 69 69 0.97% 1.18%

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 10 83 3221677 24044.34 650 639 134.0
A 14 254 34832 255.24 650 639 134.0
A 9 191 16895 121.35 650 639 134.0
B 4 21 340309 2683.32 650 629 126.6
B 0 200 61185 478.37 650 629 126.6
B 0 190 39164 304.41 650 629 126.6
C 3 233 10298 66.05 628 632 146.3
C 12 250 4307 25.11 628 632 146.3
C 13 61 4240 24.65 628 632 146.3
D 2 249 238197 1520.28 627 606 156.3
D 12 233 123323 785.23 627 606 156.3
D 1 47 66091 419.02 627 606 156.3

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