ASTROSAT CZTI

Data Quality Report

Orbit 15485

Creation date: 2024-06-27T17:09:22.729586
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/AS1G08_043T01_9000002288_15485cztM0_level2.evt modeM0/AS1G08_043T01_9000002288_15485cztM0_level2_quad_clean.evt
Size (bytes)467,084,160104,011,200
Size445.4 MB 99.2 MB
Events in quadrant A3,190,482685,877
Events in quadrant B3,592,141689,438
Events in quadrant C3,360,277674,032
Events in quadrant D3,575,247661,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135323
B0146302
C0139972
D0147142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296631.000635%
B6296841.334180%
C62961251.985388%
D6296941.493011%

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 7487 6298 0 0 0.00% 0.00%
B 7487 6297 13 13 0.17% 0.21%
C 7487 6297 4 4 0.05% 0.06%
D 7487 6297 52 52 0.69% 0.83%

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 9 143 15994 92.02 823 809 165.0
A 0 253 9603 53.29 823 809 165.0
A 0 226 7423 40.08 823 809 165.0
B 10 245 255116 1684.33 818 799 151.0
B 0 189 44632 290.3 818 799 151.0
B 0 229 22296 142.37 818 799 151.0
C 14 238 125701 691.15 792 798 180.7
C 3 233 104700 574.94 792 798 180.7
C 10 22 21055 112.09 792 798 180.7
D 1 52 295247 1526.64 804 782 192.9
D 5 222 103036 530.13 804 782 192.9
D 7 38 80837 415.04 804 782 192.9

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