ASTROSAT CZTI

Data Quality Report

Orbit 20190227_A05_075T09_9000002740_level2

Creation date: 2019-03-05T17:25:45.669101
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/AS1A05_075T09_9000002740cztM0_level2_bc.evt modeM0/AS1A05_075T09_9000002740cztM0_level2_quad_clean.evt
Size (bytes)2,220,197,760716,080,320
Size2.1 GB 682.9 MB
Events in quadrant A22,625,5944,392,270
Events in quadrant B13,990,0134,734,068
Events in quadrant C14,119,0004,591,131
Events in quadrant D13,024,4004,468,428

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010400
B010400
C010400
D010400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01564860
B01175350
C01204400
D01137050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51031676313.252729%
B5103114262.794380%
C5103112402.429896%
D510318401.646058%

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 59096 51025 124 124 0.21% 0.24%
B 59096 51022 138 138 0.23% 0.27%
C 59096 51026 0 0 0.00% 0.00%
D 59096 51029 63 63 0.11% 0.12%

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 0 13 11610500 20514.78 2600 2551 565.8
A 15 174 682563 1201.79 2600 2551 565.8
A 4 2 275587 482.54 2600 2551 565.8
B 10 245 2819857 5382.55 2790 2719 523.4
B 7 220 78036 143.9 2790 2719 523.4
B 4 216 68700 126.07 2790 2719 523.4
C 3 233 3705961 5922.95 2689 2679 625.2
C 9 54 35224 52.05 2689 2679 625.2
C 8 128 21960 30.84 2689 2679 625.2
D 7 238 1077176 1726.69 2729 2634 622.3
D 1 52 1029985 1650.86 2729 2634 622.3
D 2 234 230160 365.61 2729 2634 622.3

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