ASTROSAT CZTI

Data Quality Report

Orbit 20180624_A04_130T03_9000002186_level2

Creation date: 2018-06-28T14:08:28.731153
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_130T03_9000002186cztM0_level2_bc.evt modeM0/AS1A04_130T03_9000002186cztM0_level2_quad_clean.evt
Size (bytes)638,210,880219,625,920
Size608.6 MB 209.5 MB
Events in quadrant A4,166,8791,410,739
Events in quadrant B4,619,1191,391,334
Events in quadrant C5,105,0501,331,314
Events in quadrant D4,265,5911,338,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373280
B0392550
C0413030
D0373330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171063351.958377%
B171064602.689115%
C171062431.420554%
D171062701.578394%

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 20816 17107 1 1 0.00% 0.01%
B 20816 17106 10 10 0.05% 0.06%
C 20816 17107 0 0 0.00% 0.00%
D 20817 17107 8 8 0.04% 0.05%

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 144376 653.31 1021 1004 219.5
A 14 237 44675 199.0 1021 1004 219.5
A 4 2 41378 183.97 1021 1004 219.5
B 3 64 234113 1238.6 1011 990 188.2
B 0 219 176420 932.07 1011 990 188.2
B 4 173 63612 332.71 1011 990 188.2
C 3 233 1223205 5850.76 957 947 208.9
C 0 207 122352 581.15 957 947 208.9
C 10 22 10395 45.23 957 947 208.9
D 12 110 98011 435.8 985 960 222.7
D 10 199 78638 348.8 985 960 222.7
D 2 234 63118 279.11 985 960 222.7

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