ASTROSAT CZTI

Data Quality Report

Orbit 19988

Creation date: 2024-06-27T18:09:44.399955
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/AS1A06_002T02_9000002982_19988cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19988cztM0_level2_quad_clean.evt
Size (bytes)567,025,92071,334,720
Size540.8 MB 68.0 MB
Events in quadrant A5,415,456417,882
Events in quadrant B3,765,471443,387
Events in quadrant C3,859,247420,988
Events in quadrant D3,690,245422,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204123
B0154182
C0155432
D0151312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A652177711.915350%
B65211362.085570%
C65211952.990339%
D65211041.594847%

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 7796 6521 538 538 6.90% 8.25%
B 7796 6521 2 2 0.03% 0.03%
C 7796 6521 15 15 0.19% 0.23%
D 7796 6521 5 5 0.06% 0.08%

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 14 238 1795958 10235.58 888 874 175.4
A 14 254 160251 908.77 888 874 175.4
A 13 252 35337 196.51 888 874 175.4
B 7 220 59036 342.71 920 900 169.6
B 4 216 24720 140.42 920 900 169.6
B 0 197 21909 123.85 920 900 169.6
C 0 207 156332 770.09 882 891 201.8
C 14 238 140098 689.66 882 891 201.8
C 3 233 118262 581.48 882 891 201.8
D 1 52 119462 542.13 912 887 218.7
D 12 218 76443 345.45 912 887 218.7
D 2 234 23751 104.54 912 887 218.7

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