ASTROSAT CZTI

Data Quality Report

Orbit 14948

Creation date: 2024-06-27T17:01:41.604572
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/AS1T02_056T01_9000002210_14948cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14948cztM0_level2_quad_clean.evt
Size (bytes)730,229,76066,323,520
Size696.4 MB 63.3 MB
Events in quadrant A3,259,985411,654
Events in quadrant B3,337,241410,747
Events in quadrant C3,258,057401,082
Events in quadrant D11,812,688323,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137743
B0139732
C0136792
D0395382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6612280.423472%
B6612450.680581%
C6612100.151240%
D6612302745.780399%

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 7763 6614 1 1 0.01% 0.02%
B 7763 6614 2 2 0.03% 0.03%
C 7763 6614 0 0 0.00% 0.00%
D 7763 6614 3043 3043 39.20% 46.01%

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 49646 292.63 825 809 166.9
A 3 1 21086 121.5 825 809 166.9
A 9 143 10808 59.91 825 809 166.9
B 0 189 29833 184.83 825 806 157.0
B 0 230 24700 152.14 825 806 157.0
B 0 219 21287 130.41 825 806 157.0
C 3 233 157581 856.69 795 800 183.0
C 13 61 5806 27.35 795 800 183.0
C 3 202 1898 6.0 795 800 183.0
D 7 254 8804512 54266.93 686 670 162.2
D 7 223 256931 1579.59 686 670 162.2
D 13 249 67966 414.81 686 670 162.2

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