ASTROSAT CZTI

Data Quality Report

Orbit 20210623_A10_071T54_9000004482_level2

Creation date: 2021-06-25T10:54:25.336914
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_071T54_9000004482cztM0_level2_bc.evt modeM0/AS1A10_071T54_9000004482cztM0_level2_quad_clean.evt
Size (bytes)2,876,074,560718,194,240
Size2.7 GB 684.9 MB
Events in quadrant A12,334,6074,612,776
Events in quadrant B29,546,7644,603,833
Events in quadrant C13,324,0494,369,522
Events in quadrant D27,932,5134,167,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01213490
B01802420
C01266150
D01773880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011880
B011880
C011880
D011880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A582909581.643507%
B5829018923.245840%
C5829017292.966203%
D5829048128.255275%

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 66930 58287 3 3 0.00% 0.01%
B 66930 58283 27 27 0.04% 0.05%
C 66929 58281 4 4 0.01% 0.01%
D 66929 58284 970 970 1.45% 1.66%

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 105262 150.02 3167 3111 680.9
A 15 174 49323 67.87 3167 3111 680.9
A 11 47 22116 27.91 3167 3111 680.9
B 6 159 15882191 26496.91 3183 3106 599.3
B 4 52 476583 790.08 3183 3106 599.3
B 0 190 278438 459.44 3183 3106 599.3
C 0 10 1315590 1855.22 3020 3007 707.5
C 3 233 115292 158.71 3020 3007 707.5
C 2 114 109042 149.87 3020 3007 707.5
D 12 218 5443564 8036.72 3002 2906 677.0
D 13 174 4947929 7304.59 3002 2906 677.0
D 8 195 4120627 6082.53 3002 2906 677.0

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