ASTROSAT CZTI

Data Quality Report

Orbit 08587

Creation date: 2024-06-27T15:34:39.806803
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_102T01_9000001202_08587cztM0_level2.evt modeM0/AS1A03_102T01_9000001202_08587cztM0_level2_quad_clean.evt
Size (bytes)444,792,960111,409,920
Size424.2 MB 106.2 MB
Events in quadrant A3,180,906718,008
Events in quadrant B3,437,050743,433
Events in quadrant C3,082,488724,029
Events in quadrant D3,287,386694,622

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146362
B0150081
C0145051
D0150691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71021752.464095%
B71021742.450014%
C7102700.985638%
D71021281.802309%

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 7227 7105 3 3 0.04% 0.04%
B 7227 7104 9 9 0.12% 0.13%
C 7227 7105 1 1 0.01% 0.01%
D 7227 7104 19 19 0.26% 0.27%

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 15 223 36582 216.25 806 788 165.5
A 15 239 12734 72.17 806 788 165.5
A 15 174 12430 70.34 806 788 165.5
B 0 214 146869 940.36 814 791 155.3
B 4 173 53159 337.11 814 791 155.3
B 12 111 16460 100.87 814 791 155.3
C 9 54 15047 78.75 784 785 181.1
C 13 61 5945 28.49 784 785 181.1
C 8 222 4800 22.17 784 785 181.1
D 7 71 84428 435.47 781 755 192.1
D 12 233 75171 387.29 781 755 192.1
D 2 14 49966 256.12 781 755 192.1

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