ASTROSAT CZTI

Data Quality Report

Orbit 20220822_A10_094T23_9000005304_level2

Creation date: 2022-08-25T17:17:46.681081
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/AS1A10_094T23_9000005304cztM0_level2_bc.evt modeM0/AS1A10_094T23_9000005304cztM0_level2_quad_clean.evt
Size (bytes)352,437,120165,769,920
Size336.1 MB 158.1 MB
Events in quadrant A2,178,0791,110,212
Events in quadrant B2,335,9911,113,372
Events in quadrant C2,275,8261,150,736
Events in quadrant D3,315,9721,074,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173070
B0190910
C0173430
D0221540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8229130.157978%
B82292503.038036%
C8229430.522542%
D82293564.326164%

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 10352 8230 1 1 0.01% 0.01%
B 10351 8228 1 1 0.01% 0.01%
C 10351 8228 9 9 0.09% 0.11%
D 10351 8228 99 99 0.96% 1.20%

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 10 83 354335 3587.5 446 441 98.6
A 13 248 44942 451.12 446 441 98.6
A 12 189 18888 187.0 446 441 98.6
B 12 18 202791 2319.79 443 436 87.2
B 0 213 132501 1513.99 443 436 87.2
B 5 255 121985 1393.43 443 436 87.2
C 15 214 326193 3098.57 450 450 105.1
C 0 10 143996 1365.45 450 450 105.1
C 1 23 20280 188.62 450 450 105.1
D 2 249 622959 5796.55 446 434 107.4
D 12 227 432547 4023.56 446 434 107.4
D 2 153 128851 1195.74 446 434 107.4

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