ASTROSAT CZTI

Data Quality Report

Orbit 47933

Creation date: 2024-08-08T23:48:33.059433
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/AS1A13_025T02_9000006380_47933cztM0_level2.fits modeM0/AS1A13_025T02_9000006380_47933cztM0_level2_quad_clean.evt
Size (bytes)1,368,316,800284,204,160
Size1.3 GB 271.0 MB
Events in quadrant A19,200,0951,817,950
Events in quadrant B8,573,0451,932,161
Events in quadrant C8,267,7121,915,161
Events in quadrant D13,162,5681,649,007

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0701222
B0387502
C0389212
D0527773

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1872312346.590824%
B187234752.536987%
C187241951.041444%
D1872314287.626983%

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 19893 18725 359 359 1.80% 1.92%
B 19893 18724 2 2 0.01% 0.01%
C 19894 18726 6 6 0.03% 0.03%
D 19893 18725 1050 1050 5.28% 5.61%

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 10 83 10109324 23358.41 2067 2019 432.7
A 0 31 995824 2296.73 2067 2019 432.7
A 7 3 114520 259.99 2067 2019 432.7
B 7 221 90274 214.78 2075 2007 411.0
B 12 111 53692 125.76 2075 2007 411.0
B 12 0 52483 122.82 2075 2007 411.0
C 12 2 60872 121.39 2062 2074 484.4
C 14 254 49249 97.4 2062 2074 484.4
C 8 111 28625 54.82 2062 2074 484.4
D 2 37 3710243 7275.38 2029 1964 509.7
D 15 217 814681 1594.49 2029 1964 509.7
D 14 34 253609 493.71 2029 1964 509.7

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