ASTROSAT CZTI

Data Quality Report

Orbit 20190614_T03_120T01_9000002990_level2

Creation date: 2019-06-16T12:56:21.899402
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/AS1T03_120T01_9000002990cztM0_level2_bc.evt modeM0/AS1T03_120T01_9000002990cztM0_level2_quad_clean.evt
Size (bytes)2,583,622,0801,019,635,200
Size2.4 GB 972.4 MB
Events in quadrant A15,908,7896,964,340
Events in quadrant B15,684,2207,019,495
Events in quadrant C11,946,5896,777,425
Events in quadrant D30,964,4246,352,977

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011160
B011160
C011160
D011160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01319110
B01267280
C01139220
D01770700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497323954.356684%
B5497311862.157423%
C549736521.186037%
D5497346208.404126%

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 60852 54971 95 95 0.16% 0.17%
B 60852 54973 96 96 0.16% 0.17%
C 60852 54974 0 0 0.00% 0.00%
D 60852 54972 1242 1242 2.04% 2.26%

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 14 238 2314388 3169.84 3142 3062 729.2
A 14 254 805372 1100.32 3142 3062 729.2
A 5 16 380005 516.95 3142 3062 729.2
B 10 245 974446 1516.04 3177 3123 640.7
B 7 220 697373 1083.59 3177 3123 640.7
B 4 80 648560 1007.4 3177 3123 640.7
C 3 233 105543 139.73 3040 3051 733.5
C 4 254 72096 94.13 3040 3051 733.5
C 4 175 44244 56.16 3040 3051 733.5
D 1 52 10154704 13788.48 3012 2896 736.3
D 7 38 5518059 7490.85 3012 2896 736.3
D 12 218 2810736 3813.69 3012 2896 736.3

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