ASTROSAT CZTI

Data Quality Report

Orbit 09291

Creation date: 2024-06-27T15:44:00.749037
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/AS1G07_077T02_9000001308_09291cztM0_level2.evt modeM0/AS1G07_077T02_9000001308_09291cztM0_level2_quad_clean.evt
Size (bytes)1,836,610,560342,717,120
Size1.7 GB 326.8 MB
Events in quadrant A16,484,5862,158,909
Events in quadrant B12,120,9642,207,247
Events in quadrant C11,133,2702,203,293
Events in quadrant D14,211,8032,107,977

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066069407
B053183261
C050795190
D059543279

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05062
B05062
C05062
D05060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A247409573.868230%
B247623011.215572%
C247811880.758646%
D247655952.402584%

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 34478 24848 344 344 1.00% 1.38%
B 34479 24856 20 20 0.06% 0.08%
C 34479 24856 0 0 0.00% 0.00%
D 34479 24853 268 268 0.78% 1.08%

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 8 5 3848126 6707.39 2844 2782 573.3
A 15 223 776771 1350.06 2844 2782 573.3
A 15 239 434877 753.7 2844 2782 573.3
B 0 214 261169 474.22 2898 2828 544.8
B 8 234 206293 373.48 2898 2828 544.8
B 0 219 123708 221.89 2898 2828 544.8
C 14 67 32269 44.84 2838 2848 656.1
C 13 61 21590 28.56 2838 2848 656.1
C 12 4 15298 18.97 2838 2848 656.1
D 1 52 1980997 2843.21 2794 2724 695.8
D 12 233 749589 1073.41 2794 2724 695.8
D 7 71 379999 542.23 2794 2724 695.8

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