ASTROSAT CZTI

Data Quality Report

Orbit 20191004_A07_059T01_9000003218_level2

Creation date: 2019-10-05T08:56:31.548330
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/AS1A07_059T01_9000003218cztM0_level2_bc.evt modeM0/AS1A07_059T01_9000003218cztM0_level2_quad_clean.evt
Size (bytes)600,022,080196,516,800
Size572.2 MB 187.4 MB
Events in quadrant A3,738,0951,240,161
Events in quadrant B2,912,4021,318,874
Events in quadrant C2,601,9821,293,255
Events in quadrant D8,030,0611,204,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314590
B0278500
C0270250
D0444400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129577826.035348%
B129571721.327468%
C129571911.474107%
D12957137610.619742%

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 15747 12951 104 104 0.66% 0.80%
B 15747 12957 3 3 0.02% 0.02%
C 15747 12958 0 0 0.00% 0.00%
D 15747 12956 359 359 2.28% 2.77%

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 15 236 1217674 8491.17 650 636 143.3
A 13 254 20386 137.79 650 636 143.3
A 6 16 5382 33.11 650 636 143.3
B 0 197 95048 710.39 689 671 132.9
B 3 64 89744 670.47 689 671 132.9
B 0 230 31683 233.43 689 671 132.9
C 10 23 11913 69.93 671 667 160.8
C 8 208 9923 57.55 671 667 160.8
C 13 61 3920 20.23 671 667 160.8
D 1 52 2394699 15689.6 649 626 152.6
D 12 235 2378109 15580.88 649 626 152.6
D 1 20 303520 1985.02 649 626 152.6

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