ASTROSAT CZTI

Data Quality Report

Orbit 20200314_C05_002T09_9000003566_level2

Creation date: 2020-03-16T16:21:38.752597
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_002T09_9000003566cztM0_level2_bc.evt modeM0/AS1C05_002T09_9000003566cztM0_level2_quad_clean.evt
Size (bytes)288,060,480114,644,160
Size274.7 MB 109.3 MB
Events in quadrant A1,502,575754,871
Events in quadrant B1,531,192758,233
Events in quadrant C1,464,189733,469
Events in quadrant D3,711,572708,020

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151960
B0152760
C0151640
D0223210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7433821.103188%
B74331051.412619%
C74331321.775864%
D74336198.327728%

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 7993 7433 0 0 0.00% 0.00%
B 7993 7433 1 1 0.01% 0.01%
C 7993 7433 0 0 0.00% 0.00%
D 7993 7432 233 233 2.92% 3.14%

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 4 2 19101 217.49 383 375 86.1
A 13 254 10571 118.42 383 375 86.1
A 3 1 2641 26.32 383 375 86.1
B 10 247 16886 217.25 384 374 76.0
B 4 187 13596 173.96 384 374 76.0
B 4 171 8204 103.02 384 374 76.0
C 7 247 38580 425.3 368 365 89.9
C 3 233 4796 49.31 368 365 89.9
C 10 9 4749 48.79 368 365 89.9
D 1 52 649805 7239.66 368 353 89.7
D 7 238 581592 6479.27 368 353 89.7
D 8 195 550302 6130.47 368 353 89.7

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