ASTROSAT CZTI

Data Quality Report

Orbit 20201031_A09_038T28_9000003952_level2

Creation date: 2021-01-07T16:12:23.202921
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_038T28_9000003952cztM0_level2_bc.evt modeM0/AS1A09_038T28_9000003952cztM0_level2_quad_clean.evt
Size (bytes)217,532,16079,453,440
Size207.5 MB 75.8 MB
Events in quadrant A1,104,347530,498
Events in quadrant B1,212,904546,891
Events in quadrant C1,067,096520,139
Events in quadrant D2,868,984471,479

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100800
B0105930
C0101660
D0174110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4801360.749844%
B4801761.583004%
C4801681.416372%
D480160812.664028%

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 5981 4801 12 12 0.20% 0.25%
B 5981 4800 0 0 0.00% 0.00%
C 5981 4800 1 1 0.02% 0.02%
D 5981 4800 36 36 0.60% 0.75%

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 6 16 35240 583.9 270 265 59.9
A 15 174 25775 425.88 270 265 59.9
A 13 254 7568 121.92 270 265 59.9
B 10 245 109312 2000.19 277 270 54.5
B 0 230 14559 262.1 277 270 54.5
B 15 32 12070 216.44 277 270 54.5
C 2 16 29144 451.34 265 263 64.0
C 8 128 7105 106.92 265 263 64.0
C 7 221 3573 51.73 265 263 64.0
D 1 52 1540163 26475.34 251 242 58.2
D 7 80 337324 5795.34 251 242 58.2
D 2 234 16260 275.39 251 242 58.2

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