ASTROSAT CZTI

Data Quality Report

Orbit 20210219_A10_021T08_9000004186_level2

Creation date: 2021-02-20T14:32:13.339319
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/AS1A10_021T08_9000004186cztM0_level2_bc.evt modeM0/AS1A10_021T08_9000004186cztM0_level2_quad_clean.evt
Size (bytes)485,599,680172,255,680
Size463.1 MB 164.3 MB
Events in quadrant A2,935,5321,115,797
Events in quadrant B3,194,6691,138,750
Events in quadrant C3,135,5581,098,015
Events in quadrant D4,654,3061,072,168

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261670
B0273550
C0276460
D0322520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114571621.413983%
B114572251.963865%
C114572982.601030%
D114574163.630968%

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 14151 11457 0 0 0.00% 0.00%
B 14151 11457 0 0 0.00% 0.00%
C 14151 11457 0 0 0.00% 0.00%
D 14151 11458 21 21 0.15% 0.18%

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 13 254 21097 128.63 759 750 158.2
A 0 226 4838 25.84 759 750 158.2
A 12 194 4542 23.97 759 750 158.2
B 0 183 178664 1276.09 770 758 139.4
B 5 255 39021 274.45 770 758 139.4
B 0 190 13475 91.22 770 758 139.4
C 3 233 256717 1501.32 744 746 170.5
C 2 114 22365 126.8 744 746 170.5
C 13 61 4268 20.66 744 746 170.5
D 8 195 809243 4908.59 746 728 164.7
D 1 52 682214 4137.38 746 728 164.7
D 13 153 86029 517.87 746 728 164.7

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