ASTROSAT CZTI

Data Quality Report

Orbit 20180422_A04_010T01_9000002046_level2

Creation date: 2018-04-25T10:07:21.321924
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_010T01_9000002046cztM0_level2_bc.evt modeM0/AS1A04_010T01_9000002046cztM0_level2_quad_clean.evt
Size (bytes)2,892,199,680926,533,440
Size2.7 GB 883.6 MB
Events in quadrant A16,917,0915,830,484
Events in quadrant B15,816,3675,908,567
Events in quadrant C16,652,9605,819,270
Events in quadrant D33,179,5485,446,541

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01593150
B01557240
C01565760
D02153720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015040
B015040
C015040
D015040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7376418222.470040%
B7376411741.591562%
C7376410271.392278%
D7376343335.874219%

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 85706 73756 169 169 0.20% 0.23%
B 85706 73757 12 12 0.01% 0.02%
C 85706 73755 1 1 0.00% 0.00%
D 85706 73754 698 698 0.81% 0.95%

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 23 2126395 2615.28 3747 3665 811.7
A 0 226 149384 179.53 3747 3665 811.7
A 4 2 91979 108.81 3747 3665 811.7
B 4 80 364367 508.27 3788 3684 709.6
B 3 209 189513 261.87 3788 3684 709.6
B 0 219 167322 230.6 3788 3684 709.6
C 3 233 2076183 2508.99 3711 3654 826.0
C 0 207 39615 43.53 3711 3654 826.0
C 12 4 26545 27.71 3711 3654 826.0
D 1 52 10934932 12742.34 3626 3509 857.9
D 5 222 2676968 3116.35 3626 3509 857.9
D 8 195 1438659 1672.9 3626 3509 857.9

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