ASTROSAT CZTI

Data Quality Report

Orbit 20170621_A03_069T02_9000001324_level2

Creation date: 2017-09-24T06:29:06.785924
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/AS1A03_069T02_9000001324cztM0_level2.evt modeM0/AS1A03_069T02_9000001324cztM0_level2_quad_clean.evt
Size (bytes)604,843,200130,512,960
Size576.8 MB 124.5 MB
Events in quadrant A4,617,023849,034
Events in quadrant B4,081,255856,414
Events in quadrant C3,759,145858,528
Events in quadrant D5,294,123809,383

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01760
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191780
B0177580
C0170430
D0214050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83171481.779488%
B83271211.453104%
C8353871.041542%
D83433484.171161%

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 10791 8544 10 10 0.09% 0.12%
B 10791 8556 7 7 0.06% 0.08%
C 10787 8567 0 0 0.00% 0.00%
D 10780 8539 214 214 1.99% 2.51%

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 8 5 737986 3704.81 968 945 198.9
A 13 251 75943 376.99 968 945 198.9
A 1 162 31221 152.19 968 945 198.9
B 0 214 89551 481.07 970 945 184.2
B 0 219 64816 346.78 970 945 184.2
B 5 255 60783 324.88 970 945 184.2
C 8 222 7678 30.57 959 963 219.6
C 13 61 7346 29.06 959 963 219.6
C 14 67 4412 15.7 959 963 219.6
D 1 52 635660 2560.41 934 912 247.9
D 12 227 300688 1209.22 934 912 247.9
D 1 255 205904 826.89 934 912 247.9

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