ASTROSAT CZTI

Data Quality Report

Orbit 20200226_C05_002T07_9000003536_level2

Creation date: 2020-02-27T13:55:49.850349
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C05_002T07_9000003536cztM0_level2_bc.evt modeM0/AS1C05_002T07_9000003536cztM0_level2_quad_clean.evt
Size (bytes)238,006,080110,171,520
Size227.0 MB 105.1 MB
Events in quadrant A1,484,272732,915
Events in quadrant B1,549,517750,712
Events in quadrant C1,628,721720,096
Events in quadrant D2,119,896704,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136550
B0139710
C0143850
D0153990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61361582.574967%
B61361822.966102%
C61362524.106910%
D61361652.689048%

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 7491 6136 0 0 0.00% 0.00%
B 7491 6137 0 0 0.00% 0.00%
C 7491 6136 0 0 0.00% 0.00%
D 7491 6136 2 2 0.03% 0.03%

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 9365 108.44 383 376 82.9
A 4 2 5968 67.46 383 376 82.9
A 2 250 3247 34.63 383 376 82.9
B 0 189 53164 707.9 388 380 74.6
B 0 245 5834 73.15 388 380 74.6
B 4 216 5139 63.82 388 380 74.6
C 7 247 138997 1568.38 372 371 88.4
C 0 10 55913 628.39 372 371 88.4
C 1 16 5825 61.71 372 371 88.4
D 8 195 542783 6215.0 380 368 87.3
D 9 35 48372 550.03 380 368 87.3
D 1 52 46935 533.57 380 368 87.3

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