ASTROSAT CZTI

Data Quality Report

Orbit 11230

Creation date: 2024-06-27T16:10:03.814653
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/AS1T01_200T01_9000001638_11230cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11230cztM0_level2_quad_clean.evt
Size (bytes)549,604,800123,857,280
Size524.1 MB 118.1 MB
Events in quadrant A5,038,081805,785
Events in quadrant B3,904,754842,302
Events in quadrant C3,129,559861,106
Events in quadrant D4,142,730799,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193073
B0159772
C0137322
D0163882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63443205.044136%
B63442604.098361%
C6344881.387137%
D63441442.269861%

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 7564 6345 189 189 2.50% 2.98%
B 7564 6345 133 133 1.76% 2.10%
C 7564 6345 35 35 0.46% 0.55%
D 7564 6345 89 89 1.18% 1.40%

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 15 174 1009534 6794.94 736 720 148.5
A 8 5 992017 6676.96 736 720 148.5
A 14 238 52866 351.23 736 720 148.5
B 4 239 854826 6150.6 751 732 138.9
B 3 189 46070 326.49 751 732 138.9
B 15 204 39725 280.8 751 732 138.9
C 4 254 108348 622.24 750 753 172.9
C 7 238 96684 554.79 750 753 172.9
C 13 61 5510 27.51 750 753 172.9
D 8 195 656600 3741.03 732 711 175.3
D 12 157 224661 1277.36 732 711 175.3
D 1 52 143790 816.09 732 711 175.3

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