ASTROSAT CZTI

Data Quality Report

Orbit 09561

Creation date: 2024-06-27T15:47:44.677940
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_069T01_9000001356_09561cztM0_level2.evt modeM0/AS1G07_069T01_9000001356_09561cztM0_level2_quad_clean.evt
Size (bytes)1,176,269,760236,900,160
Size1.1 GB 225.9 MB
Events in quadrant A8,610,7391,483,573
Events in quadrant B8,804,1961,483,106
Events in quadrant C8,109,8041,487,956
Events in quadrant D8,852,4051,452,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03848
B038412
C03842
D038414

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038624395
B039481438
C037751413
D039956476

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18436860.466479%
B184041150.624864%
C18415290.157480%
D183941070.581711%

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 20836 18597 0 0 0.00% 0.00%
B 20836 18590 28 28 0.13% 0.15%
C 20836 18597 0 0 0.00% 0.00%
D 20836 18593 68 68 0.33% 0.37%

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 1 162 226471 516.55 2124 2069 434.4
A 1 178 78609 176.19 2124 2069 434.4
A 1 161 78406 175.72 2124 2069 434.4
B 0 214 135690 333.03 2122 2068 401.2
B 4 80 109327 267.32 2122 2068 401.2
B 0 187 84949 206.57 2122 2068 401.2
C 13 61 15477 27.82 2077 2084 481.4
C 9 68 8731 13.81 2077 2084 481.4
C 12 4 6177 8.5 2077 2084 481.4
D 1 52 340330 672.71 2056 2007 502.9
D 12 233 258562 510.12 2056 2007 502.9
D 8 195 152252 298.74 2056 2007 502.9

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