ASTROSAT CZTI

Data Quality Report

Orbit 20210211_A10_094T20_9000004164_level2

Creation date: 2021-02-12T11:24:13.924449
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/AS1A10_094T20_9000004164cztM0_level2_bc.evt modeM0/AS1A10_094T20_9000004164cztM0_level2_quad_clean.evt
Size (bytes)244,143,360106,562,880
Size232.8 MB 101.6 MB
Events in quadrant A1,210,449724,080
Events in quadrant B1,296,349734,030
Events in quadrant C1,133,862699,694
Events in quadrant D3,343,978657,519

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121010
B0123760
C0120760
D0194820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58971151.950144%
B58971242.102764%
C58971612.730202%
D58974848.207563%

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 6596 5895 0 0 0.00% 0.00%
B 6596 5895 0 0 0.00% 0.00%
C 6596 5895 0 0 0.00% 0.00%
D 6596 5895 80 80 1.21% 1.36%

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 6 16 27865 403.74 300 294 68.3
A 1 113 15879 228.22 300 294 68.3
A 13 254 10267 146.04 300 294 68.3
B 14 167 56868 935.02 302 294 60.5
B 5 255 34873 571.5 302 294 60.5
B 10 246 16953 275.33 302 294 60.5
C 2 114 11570 160.82 289 286 70.2
C 2 16 7665 105.17 289 286 70.2
C 3 233 2200 27.28 289 286 70.2
D 1 52 1310183 19125.25 285 274 68.5
D 8 195 791862 11557.53 285 274 68.5
D 2 250 85025 1237.4 285 274 68.5

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