ASTROSAT CZTI

Data Quality Report

Orbit 10677

Creation date: 2024-06-27T16:02:21.422120
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/AS1A03_097T01_9000001540_10677cztM0_level2.evt modeM0/AS1A03_097T01_9000001540_10677cztM0_level2_quad_clean.evt
Size (bytes)637,983,36089,680,320
Size608.4 MB 85.5 MB
Events in quadrant A8,090,523425,182
Events in quadrant B4,402,414627,198
Events in quadrant C2,821,721628,147
Events in quadrant D3,584,073598,906

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283192
B0172211
C0127261
D0147381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6232232437.291399%
B62323014.829910%
C6232380.609756%
D6232631.010911%

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 7271 6232 2182 2182 30.01% 35.01%
B 7272 6233 178 178 2.45% 2.86%
C 7272 6233 4 4 0.06% 0.06%
D 7272 6233 29 29 0.40% 0.47%

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 15 239 5915630 52164.92 556 543 113.4
A 1 162 13843 117.29 556 543 113.4
A 4 2 7832 64.28 556 543 113.4
B 4 239 1108694 8005.06 727 710 138.4
B 4 81 222431 1601.91 727 710 138.4
B 15 204 64674 462.13 727 710 138.4
C 1 3 22761 133.03 715 720 165.7
C 13 61 5389 28.18 715 720 165.7
C 14 67 4001 19.8 715 720 165.7
D 8 195 297496 1722.17 716 695 172.3
D 1 52 149778 865.04 716 695 172.3
D 10 199 95668 551.07 716 695 172.3

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