ASTROSAT CZTI

Data Quality Report

Orbit 35514

Creation date: 2022-04-23T18:01:46.074681
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/AS1A11_097T07_9000005084_35514cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35514cztM0_level2_quad_clean.evt
Size (bytes)486,702,72095,800,320
Size464.2 MB 91.4 MB
Events in quadrant A3,207,885614,182
Events in quadrant B3,521,784621,734
Events in quadrant C3,887,227610,161
Events in quadrant D3,662,021582,051

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138343
B0147902
C0155052
D0151832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A678760.088404%
B6787851.252394%
C6787711.046118%
D67871251.841756%

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 9442 6789 0 0 0.00% 0.00%
B 9442 6789 52 52 0.55% 0.77%
C 9442 6789 50 50 0.53% 0.74%
D 9442 6789 107 107 1.13% 1.58%

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 83 151980 952.2 788 771 158.8
A 13 254 10218 59.49 788 771 158.8
A 3 137 8271 47.23 788 771 158.8
B 5 236 220697 1439.61 780 757 152.8
B 5 172 165069 1075.5 780 757 152.8
B 15 85 20682 130.42 780 757 152.8
C 0 10 297102 1642.78 768 772 180.4
C 0 207 286083 1581.69 768 772 180.4
C 15 214 282626 1562.53 768 772 180.4
D 13 249 262263 1405.06 760 741 186.1
D 2 153 122791 655.73 760 741 186.1
D 8 195 116432 621.57 760 741 186.1

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