ASTROSAT CZTI

Data Quality Report

Orbit 43471

Creation date: 2024-06-27T22:52:20.477732
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/AS1A12_018T01_9000005874_43471cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43471cztM0_level2_quad_clean.evt
Size (bytes)456,707,52084,231,360
Size435.6 MB 80.3 MB
Events in quadrant A5,252,260527,049
Events in quadrant B2,667,879604,329
Events in quadrant C2,573,466571,124
Events in quadrant D5,997,050473,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190761
B0115661
C0110871
D0215561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534186116.120577%
B5341230.430631%
C534130.056169%
D534171913.461899%

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 7104 5341 764 764 10.75% 14.30%
B 7104 5342 14 14 0.20% 0.26%
C 7104 5342 0 0 0.00% 0.00%
D 7104 5342 754 754 10.61% 14.11%

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 15 222 2394291 21633.29 536 524 110.7
A 10 83 549284 4959.33 536 524 110.7
A 15 237 202830 1828.31 536 524 110.7
B 0 245 148391 1360.93 570 557 108.6
B 0 189 122323 1120.96 570 557 108.6
B 3 112 38584 350.07 570 557 108.6
C 15 214 233747 1755.73 564 566 132.8
C 3 233 132730 995.13 564 566 132.8
C 13 61 3804 24.38 564 566 132.8
D 12 233 1393358 10776.54 534 519 129.2
D 2 16 1258519 9733.28 534 519 129.2
D 1 52 799909 6184.96 534 519 129.2

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