ASTROSAT CZTI

Data Quality Report

Orbit 00703

Creation date: 2024-06-27T14:01:54.759402
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/AS1P01_142T01_9000000102_00703cztM0_level2.evt modeM0/AS1P01_142T01_9000000102_00703cztM0_level2_quad_clean.evt
Size (bytes)1,023,664,32061,894,080
Size976.2 MB 59.0 MB
Events in quadrant A7,277,480369,994
Events in quadrant B7,822,372369,238
Events in quadrant C8,017,057359,230
Events in quadrant D7,485,385353,912

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259171
B0274691
C0280982
D0265421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6038370.612786%
B603880.132494%
C603750.082823%
D6037240.397548%

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 6878 6039 266 266 3.87% 4.40%
B 6878 6039 285 285 4.14% 4.72%
C 6877 6038 175 175 2.54% 2.90%
D 6877 6038 284 284 4.13% 4.70%

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 10 216 313454 732.12 1775 1790 425.7
A 15 171 64086 146.34 1775 1790 425.7
A 12 133 55689 126.61 1775 1790 425.7
B 5 191 405640 915.6 1872 1880 441.0
B 5 247 202424 454.77 1872 1880 441.0
B 0 220 53215 116.41 1872 1880 441.0
C 3 31 318625 668.52 1701 1768 474.0
C 3 15 276794 580.27 1701 1768 474.0
C 3 175 239228 501.01 1701 1768 474.0
D 0 25 1024100 2011.34 1644 1703 508.3
D 12 188 204198 398.36 1644 1703 508.3
D 1 4 55708 106.24 1644 1703 508.3

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