ASTROSAT CZTI

Data Quality Report

Orbit 20190703_A05_163T01_9000003010_level2

Creation date: 2019-07-05T13:08:10.366797
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_163T01_9000003010cztM0_level2_bc.evt modeM0/AS1A05_163T01_9000003010cztM0_level2_quad_clean.evt
Size (bytes)4,210,269,1201,682,527,680
Size3.9 GB 1.6 GB
Events in quadrant A26,756,65410,611,318
Events in quadrant B27,813,24210,764,924
Events in quadrant C26,276,48810,394,336
Events in quadrant D37,750,62310,234,000

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026560
B026560
C026560
D026560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02705800
B02724180
C02715570
D03030650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13079415661.197303%
B13079419111.461076%
C13079422541.723321%
D13079431442.403780%

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 150555 130791 0 0 0.00% 0.00%
B 150555 130793 23 23 0.02% 0.02%
C 150555 130796 8 8 0.01% 0.01%
D 150555 130793 898 898 0.60% 0.69%

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 13 254 136589 86.39 6899 6759 1502.9
A 6 16 94114 58.13 6899 6759 1502.9
A 14 111 71862 43.32 6899 6759 1502.9
B 0 198 435176 323.26 6978 6800 1325.2
B 0 214 201407 146.85 6978 6800 1325.2
B 0 230 160230 115.78 6978 6800 1325.2
C 3 9 204413 124.47 6731 6695 1588.5
C 7 247 76296 43.82 6731 6695 1588.5
C 3 233 67931 38.55 6731 6695 1588.5
D 1 52 7134864 4511.33 6838 6590 1580.1
D 7 238 2657555 1677.74 6838 6590 1580.1
D 11 176 824696 517.76 6838 6590 1580.1

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