ASTROSAT CZTI

Data Quality Report

Orbit 20170606_A03_033T01_9000001276_level2

Creation date: 2017-09-24T03:19:32.196813
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/AS1A03_033T01_9000001276cztM0_level2.evt modeM0/AS1A03_033T01_9000001276cztM0_level2_quad_clean.evt
Size (bytes)1,276,603,200226,897,920
Size1.2 GB 216.4 MB
Events in quadrant A10,264,1431,439,280
Events in quadrant B8,334,0421,441,970
Events in quadrant C7,624,1831,422,050
Events in quadrant D11,260,7901,366,216

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421180
B0368390
C0355080
D0460680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174482591.484411%
B174531771.014152%
C174541230.704710%
D1745311596.640692%

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 19776 17456 55 55 0.28% 0.32%
B 19776 17456 11 11 0.06% 0.06%
C 19776 17456 6 6 0.03% 0.03%
D 19776 17454 1065 1065 5.39% 6.10%

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 8 5 2149870 5422.7 1982 1942 396.1
A 13 251 168559 420.64 1982 1942 396.1
A 1 162 150653 375.44 1982 1942 396.1
B 4 48 248986 656.16 1996 1951 376.5
B 0 230 57597 147.8 1996 1951 376.5
B 0 219 52423 134.06 1996 1951 376.5
C 14 234 55876 121.24 1928 1933 444.9
C 9 68 41335 88.56 1928 1933 444.9
C 13 61 14618 28.51 1928 1933 444.9
D 12 233 2816775 5551.19 1893 1849 507.1
D 2 14 555981 1092.78 1893 1849 507.1
D 1 52 272529 533.8 1893 1849 507.1

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