ASTROSAT CZTI

Data Quality Report

Orbit 35469

Creation date: 2022-04-21T02:37:14.374335
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/AS1A11_095T06_9000005078_35469cztM0_level2.evt modeM0/AS1A11_095T06_9000005078_35469cztM0_level2_quad_clean.evt
Size (bytes)457,064,64081,227,520
Size435.9 MB 77.5 MB
Events in quadrant A3,078,466508,786
Events in quadrant B3,086,768516,916
Events in quadrant C3,683,548503,423
Events in quadrant D3,558,106483,542

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130613
B0132022
C0145792
D0146232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A640870.109238%
B6408320.499376%
C64081051.638577%
D6408380.593009%

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 9484 6410 0 0 0.00% 0.00%
B 9484 6410 16 16 0.17% 0.25%
C 9484 6410 76 76 0.80% 1.19%
D 9484 6410 28 28 0.30% 0.44%

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 135904 876.39 755 739 154.2
A 13 6 16378 101.4 755 739 154.2
A 13 254 8837 52.51 755 739 154.2
B 5 172 83503 566.4 750 729 146.1
B 5 236 42122 283.24 750 729 146.1
B 12 111 18561 122.02 750 729 146.1
C 0 10 276968 1619.27 733 737 170.6
C 0 207 276359 1615.7 733 737 170.6
C 15 214 263392 1539.69 733 737 170.6
D 8 195 206854 1148.96 734 713 179.4
D 2 249 115098 637.54 734 713 179.4
D 2 152 68526 377.97 734 713 179.4

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