ASTROSAT CZTI

Data Quality Report

Orbit 20180401_A04_180T01_9000002000_level2

Creation date: 2018-04-02T13:20:32.049793
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_180T01_9000002000cztM0_level2_bc.evt modeM0/AS1A04_180T01_9000002000cztM0_level2_quad_clean.evt
Size (bytes)1,832,166,720604,080,000
Size1.7 GB 576.1 MB
Events in quadrant A10,351,8783,843,817
Events in quadrant B11,424,3603,840,103
Events in quadrant C12,067,8093,790,623
Events in quadrant D18,404,8143,561,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0991100
B01030130
C01015830
D01286080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09680
B09680
C09680
D09680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A475076391.345065%
B475078621.814469%
C475075371.130360%
D4750723734.995053%

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 56568 47501 5 5 0.01% 0.01%
B 56568 47500 30 30 0.05% 0.06%
C 56568 47503 2 2 0.00% 0.00%
D 56568 47500 174 174 0.31% 0.37%

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 1 162 81688 139.29 2613 2567 568.0
A 4 2 72488 123.09 2613 2567 568.0
A 9 143 57847 97.32 2613 2567 568.0
B 3 64 440943 895.33 2600 2532 489.7
B 3 209 232653 469.96 2600 2532 489.7
B 0 189 111861 223.27 2600 2532 489.7
C 3 233 2071159 3746.91 2528 2508 552.1
C 0 207 36047 60.75 2528 2508 552.1
C 7 238 28976 47.94 2528 2508 552.1
D 5 222 3180511 5460.77 2517 2440 582.0
D 8 195 1748577 3000.33 2517 2440 582.0
D 13 122 911502 1562.01 2517 2440 582.0

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