ASTROSAT CZTI

Data Quality Report

Orbit 20181006_A05_069T02_9000002414_level2

Creation date: 2018-10-08T11:55:24.056282
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_069T02_9000002414cztM0_level2_bc.evt modeM0/AS1A05_069T02_9000002414cztM0_level2_quad_clean.evt
Size (bytes)2,222,481,600798,514,560
Size2.1 GB 761.5 MB
Events in quadrant A14,573,8615,026,132
Events in quadrant B16,130,5595,115,811
Events in quadrant C13,854,0234,891,828
Events in quadrant D18,346,7154,724,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013160
B013160
C013160
D013160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01395850
B01436320
C01362570
D01504010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6455914912.309515%
B6455913752.129835%
C6455911401.765827%
D6455916212.510882%

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 75066 64558 34 34 0.05% 0.05%
B 75066 64559 46 46 0.06% 0.07%
C 75066 64563 39 39 0.05% 0.06%
D 75066 64563 204 204 0.27% 0.32%

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 15 174 1529874 2109.61 3373 3310 723.6
A 3 1 41665 53.0 3373 3310 723.6
A 15 223 37803 47.67 3373 3310 723.6
B 3 112 564469 870.11 3435 3341 644.9
B 0 189 473236 728.64 3435 3341 644.9
B 15 35 399863 614.86 3435 3341 644.9
C 0 207 564412 728.15 3291 3273 770.6
C 3 233 513979 662.71 3291 3273 770.6
C 7 247 77370 96.15 3291 3273 770.6
D 12 218 3009502 3934.15 3316 3202 764.2
D 1 52 1313592 1714.82 3316 3202 764.2
D 12 110 487953 634.36 3316 3202 764.2

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