ASTROSAT CZTI

Data Quality Report

Orbit 20180709_A04_218T03_9000002214_level2

Creation date: 2018-07-11T09:53:34.240118
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/AS1A04_218T03_9000002214cztM0_level2_bc.evt modeM0/AS1A04_218T03_9000002214cztM0_level2_quad_clean.evt
Size (bytes)1,093,740,480412,761,600
Size1.0 GB 393.6 MB
Events in quadrant A7,265,2792,609,444
Events in quadrant B8,525,4262,639,930
Events in quadrant C8,089,0982,601,152
Events in quadrant D7,108,5822,503,471

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0691180
B0741640
C0685330
D0669190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06400
B06400
C06400
D06400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A312562690.860635%
B3125612303.935244%
C312561850.591886%
D312562730.873432%

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 36243 31256 4 4 0.01% 0.01%
B 36243 31254 75 75 0.21% 0.24%
C 36243 31257 0 0 0.00% 0.00%
D 36243 31255 7 7 0.02% 0.02%

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 12 189 495420 1415.56 1586 1550 348.9
A 1 162 280145 798.52 1586 1550 348.9
A 2 79 210662 599.37 1586 1550 348.9
B 3 64 1433640 4790.48 1581 1538 298.9
B 10 16 549557 1833.16 1581 1538 298.9
B 0 229 134668 445.33 1581 1538 298.9
C 3 233 1963587 5690.69 1557 1535 344.8
C 3 232 18025 47.83 1557 1535 344.8
C 3 234 12186 30.89 1557 1535 344.8
D 2 136 338264 939.53 1569 1514 358.4
D 12 235 225053 623.67 1569 1514 358.4
D 2 234 109928 302.48 1569 1514 358.4

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