ASTROSAT CZTI

Data Quality Report

Orbit 20200102_A07_054T01_9000003406_level2

Creation date: 2020-01-04T14:46:42.064930
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/AS1A07_054T01_9000003406cztM0_level2_bc.evt modeM0/AS1A07_054T01_9000003406cztM0_level2_quad_clean.evt
Size (bytes)2,649,971,5201,164,870,720
Size2.5 GB 1.1 GB
Events in quadrant A14,669,4837,779,342
Events in quadrant B17,251,5327,903,266
Events in quadrant C15,637,1497,555,908
Events in quadrant D27,890,9907,211,082

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01453470
B01535190
C01500220
D01896840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014360
B014360
C014360
D014360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A705107511.065097%
B7051015522.201106%
C7051014672.080556%
D7051039385.585023%

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 80115 70510 38 38 0.05% 0.05%
B 80115 70511 259 259 0.32% 0.37%
C 80115 70511 57 57 0.07% 0.08%
D 80116 70509 1501 1501 1.87% 2.13%

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 228248 275.86 3726 3657 814.1
A 13 254 102467 121.37 3726 3657 814.1
A 2 79 63138 73.06 3726 3657 814.1
B 3 64 1028341 1428.16 3772 3677 717.5
B 4 216 614698 851.63 3772 3677 717.5
B 0 189 327317 451.08 3772 3677 717.5
C 10 9 686814 795.02 3604 3594 859.4
C 0 10 474889 548.41 3604 3594 859.4
C 0 207 275708 316.64 3604 3594 859.4
D 1 52 9797226 11528.54 3591 3474 849.5
D 13 153 1300714 1527.02 3591 3474 849.5
D 13 172 1161049 1362.62 3591 3474 849.5

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