ASTROSAT CZTI

Data Quality Report

Orbit 13241

Creation date: 2024-06-27T16:38:16.140235
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/AS1G08_077T01_9000001970_13241cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13241cztM0_level2_quad_clean.evt
Size (bytes)583,341,120100,209,600
Size556.3 MB 95.6 MB
Events in quadrant A3,178,056684,118
Events in quadrant B7,432,192540,825
Events in quadrant C3,068,827699,909
Events in quadrant D3,554,321663,961

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139803
B0264452
C0135042
D0152152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6382620.971482%
B6382189229.645879%
C6382410.642432%
D63821642.569727%

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 8608 6385 0 0 0.00% 0.00%
B 8608 6384 1329 1329 15.44% 20.82%
C 8608 6385 1 1 0.01% 0.02%
D 8608 6385 102 102 1.18% 1.60%

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 12 189 107821 670.22 789 772 159.7
A 15 239 23192 140.37 789 772 159.7
A 1 162 11148 64.96 789 772 159.7
B 4 239 4714767 37092.38 671 655 127.1
B 3 64 27852 214.0 671 655 127.1
B 0 230 18685 141.87 671 655 127.1
C 15 208 23653 127.89 781 787 178.8
C 13 61 5676 27.34 781 787 178.8
C 8 222 2483 9.49 781 787 178.8
D 10 157 284392 1545.91 768 746 183.5
D 1 52 178573 969.18 768 746 183.5
D 5 222 63819 343.76 768 746 183.5

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