ASTROSAT CZTI

Data Quality Report

Orbit 31158

Creation date: 2024-06-27T20:24:38.608155
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1C06_006T03_9000004502_31158cztM0_level2.evt modeM0/AS1C06_006T03_9000004502_31158cztM0_level2_quad_clean.evt
Size (bytes)754,914,24078,189,120
Size719.9 MB 74.6 MB
Events in quadrant A3,646,598480,741
Events in quadrant B6,261,347473,119
Events in quadrant C4,238,348437,866
Events in quadrant D8,182,679425,608

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160211
B0244741
C0176511
D0299461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7899780.987467%
B79001692.139241%
C79005647.139241%
D79006097.708861%

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 8389 7900 0 0 0.00% 0.00%
B 8390 7901 16 16 0.19% 0.20%
C 8390 7900 20 20 0.24% 0.25%
D 8390 7901 438 438 5.22% 5.54%

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 14740 72.07 944 924 191.7
A 3 137 9781 46.2 944 924 191.7
A 0 226 8035 37.1 944 924 191.7
B 6 159 2290346 12784.62 930 908 179.1
B 12 18 202753 1127.14 930 908 179.1
B 0 229 37175 202.52 930 908 179.1
C 0 10 274947 1322.12 881 888 207.3
C 14 238 267954 1288.38 881 888 207.3
C 14 254 184691 886.71 881 888 207.3
D 8 195 2215909 10031.76 883 860 220.8
D 13 174 2017994 9135.42 883 860 220.8
D 2 250 348652 1575.12 883 860 220.8

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