ASTROSAT CZTI

Data Quality Report

Orbit 20220613_A10_071T35_9000005184_level2

Creation date: 2022-06-15T12:14:34.553757
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/AS1A10_071T35_9000005184cztM0_level2_bc.evt modeM0/AS1A10_071T35_9000005184cztM0_level2_quad_clean.evt
Size (bytes)2,591,470,080669,888,000
Size2.4 GB 638.9 MB
Events in quadrant A12,662,3594,250,449
Events in quadrant B17,486,6204,259,789
Events in quadrant C15,843,1604,164,425
Events in quadrant D28,732,7433,826,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140150
B01353250
C01224650
D01778750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011280
B011280
C011280
D011280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02070
B02070
C02070
D02070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55216880.159374%
B5521618733.392133%
C552166621.198928%
D55216562710.190887%

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 75859 55228 2 2 0.00% 0.00%
B 75859 55213 287 287 0.38% 0.52%
C 75859 55214 107 107 0.14% 0.19%
D 75859 55214 1412 1412 1.86% 2.56%

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 1387125 2196.74 2829 2780 630.2
A 13 6 134362 208.8 2829 2780 630.2
A 13 248 86702 133.17 2829 2780 630.2
B 5 172 3557083 6342.64 2823 2758 560.4
B 5 236 1067061 1899.23 2823 2758 560.4
B 8 128 832090 1479.93 2823 2758 560.4
C 15 214 2163219 3429.97 2757 2734 629.9
C 0 10 1639944 2599.22 2757 2734 629.9
C 0 207 1181289 1871.07 2757 2734 629.9
D 12 6 7769039 12362.54 2652 2571 628.2
D 12 227 4969113 7905.66 2652 2571 628.2
D 13 249 1601525 2545.19 2652 2571 628.2

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