ASTROSAT CZTI

Data Quality Report

Orbit 20180107_A04_196T02_9000001818_level2

Creation date: 2018-08-03T20:33:55.818985
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_196T02_9000001818cztM0_level2_bc.evt modeM0/AS1A04_196T02_9000001818cztM0_level2_quad_clean.evt
Size (bytes)169,004,16054,285,120
Size161.2 MB 51.8 MB
Events in quadrant A1,236,919330,717
Events in quadrant B1,194,644338,947
Events in quadrant C992,582332,122
Events in quadrant D1,371,474317,139

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112210
B0102790
C094930
D0109370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4614811.755527%
B4614861.863893%
C4614210.455137%
D4614921.993932%

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 4614 4614 0 0 0.00% 0.00%
B 4614 4614 0 0 0.00% 0.00%
C 4614 4614 0 0 0.00% 0.00%
D 4615 4615 9 9 0.20% 0.20%

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 158774 2845.24 247 242 55.7
A 1 162 64767 1158.06 247 242 55.7
A 13 251 26463 470.6 247 242 55.7
B 4 239 147391 2975.04 249 244 49.5
B 0 85 16582 330.32 249 244 49.5
B 0 190 12242 242.58 249 244 49.5
C 1 16 21505 391.29 241 238 54.4
C 15 208 13401 242.19 241 238 54.4
C 4 254 12661 228.57 241 238 54.4
D 14 34 133489 2307.12 242 233 57.8
D 13 104 123024 2125.94 242 233 57.8
D 1 52 61111 1054.01 242 233 57.8

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