ASTROSAT CZTI

Data Quality Report

Orbit 20190104_C04_009T02_9000002618_level2

Creation date: 2019-01-08T12:01:55.716204
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/AS1C04_009T02_9000002618cztM0_level2_bc.evt modeM0/AS1C04_009T02_9000002618cztM0_level2_quad_clean.evt
Size (bytes)326,712,960193,950,720
Size311.6 MB 185.0 MB
Events in quadrant A2,008,6381,307,802
Events in quadrant B2,579,0851,318,865
Events in quadrant C2,125,4941,266,232
Events in quadrant D2,453,9771,250,861

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213620
B0235140
C0217110
D0227500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10556210.198939%
B10553810.767554%
C10556920.871542%
D10556790.748390%

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 11496 10556 0 0 0.00% 0.00%
B 11496 10556 2 2 0.02% 0.02%
C 11496 10556 0 0 0.00% 0.00%
D 11496 10556 5 5 0.04% 0.05%

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 12 194 3482 25.3 522 512 117.4
A 0 226 3379 24.42 522 512 117.4
A 13 254 2636 18.09 522 512 117.4
B 10 245 174962 1668.07 527 513 104.6
B 0 189 100831 959.23 527 513 104.6
B 7 220 93867 892.64 527 513 104.6
C 3 233 152732 1266.88 503 500 120.2
C 5 218 35879 294.43 503 500 120.2
C 13 61 2930 20.22 503 500 120.2
D 1 52 144850 1167.67 515 495 123.6
D 12 233 74027 594.79 515 495 123.6
D 7 238 73720 592.31 515 495 123.6

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