ASTROSAT CZTI

Data Quality Report

Orbit 24983

Creation date: 2024-06-27T19:12:19.522860
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/AS1A08_003T18_9000003658_24983cztM0_level2.evt modeM0/AS1A08_003T18_9000003658_24983cztM0_level2_quad_clean.evt
Size (bytes)471,093,12095,549,760
Size449.3 MB 91.1 MB
Events in quadrant A3,171,168634,731
Events in quadrant B3,332,074657,569
Events in quadrant C3,671,100597,883
Events in quadrant D3,679,555578,516

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130382
B0134822
C0146662
D0148502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6086300.492935%
B6086450.739402%
C60862103.450542%
D6086550.903713%

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 7496 6087 0 0 0.00% 0.00%
B 7496 6087 5 5 0.07% 0.08%
C 7496 6087 114 114 1.52% 1.87%
D 7496 6087 42 42 0.56% 0.69%

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 13 254 8672 48.02 823 811 163.7
A 0 226 7025 37.96 823 811 163.7
A 3 137 6976 37.66 823 811 163.7
B 3 64 71856 458.36 823 806 155.0
B 12 111 18026 111.09 823 806 155.0
B 10 246 17989 110.85 823 806 155.0
C 2 16 351474 1938.01 778 787 181.0
C 14 238 125642 689.99 778 787 181.0
C 7 247 86529 473.84 778 787 181.0
D 10 70 253350 1334.77 780 760 189.2
D 7 238 189680 998.31 780 760 189.2
D 1 52 112397 589.93 780 760 189.2

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