ASTROSAT CZTI

Data Quality Report

Orbit 00683

Creation date: 2024-06-27T14:01:30.121586
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_147T02_9000000098_00683cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00683cztM0_level2_quad_clean.evt
Size (bytes)1,050,454,08067,403,520
Size1001.8 MB 64.3 MB
Events in quadrant A7,785,537394,016
Events in quadrant B8,515,250402,809
Events in quadrant C7,793,298398,441
Events in quadrant D7,282,982387,188

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278941
B0299961
C0278801
D0263221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6490961.479199%
B66001301.969697%
C6601660.999849%
D6601630.954401%

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 7100 6492 314 314 4.42% 4.84%
B 7100 6601 446 446 6.28% 6.76%
C 7101 6602 321 321 4.52% 4.86%
D 7101 6602 255 255 3.59% 3.86%

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 10 233 12828 22.01 2024 2044 489.9
A 15 17 8247 12.66 2024 2044 489.9
A 11 79 6804 9.72 2024 2044 489.9
B 14 53 130022 250.37 2150 2160 510.7
B 0 220 99258 190.13 2150 2160 510.7
B 0 182 56519 106.44 2150 2160 510.7
C 15 241 218219 398.95 1935 1999 542.0
C 9 52 7442 10.04 1935 1999 542.0
C -1 -1 -1 -1.0 1935 1999 542.0
D 1 4 132883 222.41 1890 1956 588.7
D 0 25 39499 63.78 1890 1956 588.7
D 9 64 29165 46.22 1890 1956 588.7

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