ASTROSAT CZTI

Data Quality Report

Orbit 20190203_A05_097T01_9000002690_level2

Creation date: 2019-02-04T10:54:35.815644
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/AS1A05_097T01_9000002690cztM0_level2_bc.evt modeM0/AS1A05_097T01_9000002690cztM0_level2_quad_clean.evt
Size (bytes)752,607,360249,485,760
Size717.7 MB 237.9 MB
Events in quadrant A4,365,5381,542,264
Events in quadrant B4,484,2071,588,478
Events in quadrant C4,083,2671,556,890
Events in quadrant D8,522,4041,522,486

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0418380
B0423360
C0411270
D0558780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195363881.986077%
B195364512.308559%
C195364792.451884%
D195369484.852580%

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 22516 19537 0 0 0.00% 0.00%
B 22516 19536 9 9 0.04% 0.05%
C 22516 19537 0 0 0.00% 0.00%
D 22516 19536 92 92 0.41% 0.47%

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 15 174 209692 905.85 1056 1032 230.3
A 4 2 100262 430.78 1056 1032 230.3
A 0 226 7032 26.05 1056 1032 230.3
B 0 197 99532 480.27 1071 1044 205.1
B 3 64 91476 440.99 1071 1044 205.1
B 0 189 43755 208.28 1071 1044 205.1
C 3 233 66162 268.89 1032 1025 242.2
C 5 218 17866 69.52 1032 1025 242.2
C 9 160 13367 50.95 1032 1025 242.2
D 7 238 3232427 13271.78 1053 1016 243.5
D 10 70 311787 1276.37 1053 1016 243.5
D 11 176 300602 1230.43 1053 1016 243.5

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