ASTROSAT CZTI

Data Quality Report

Orbit 12432

Creation date: 2024-06-27T16:27:15.496640
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/AS1A04_141T01_9000001848_12432cztM0_level2.evt modeM0/AS1A04_141T01_9000001848_12432cztM0_level2_quad_clean.evt
Size (bytes)476,040,96092,053,440
Size454.0 MB 87.8 MB
Events in quadrant A3,524,903584,872
Events in quadrant B3,794,112602,453
Events in quadrant C3,318,800599,719
Events in quadrant D3,348,337557,908

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144093
B0151642
C0136852
D0141002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6348220.346566%
B63481632.567738%
C6348270.425331%
D6348921.449275%

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 7669 6350 10 10 0.13% 0.16%
B 7669 6350 100 100 1.30% 1.57%
C 7669 6350 13 13 0.17% 0.20%
D 7669 6350 79 79 1.03% 1.24%

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 13 251 219040 1359.91 797 782 160.5
A 1 162 81645 503.84 797 782 160.5
A 1 178 39226 239.53 797 782 160.5
B 4 239 597567 3978.58 806 789 150.0
B 12 111 16767 106.52 806 789 150.0
B 11 51 16544 105.03 806 789 150.0
C 15 208 206836 1128.29 798 804 182.6
C 13 61 5835 27.55 798 804 182.6
C 1 16 2374 8.6 798 804 182.6
D 1 52 285885 1568.31 776 755 181.8
D 10 199 34748 186.97 776 755 181.8
D 8 195 26987 144.29 776 755 181.8

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