ASTROSAT CZTI

Data Quality Report

Orbit 20210203_A10_123T08_9000004152_level2

Creation date: 2021-02-06T20:30:05.496703
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/AS1A10_123T08_9000004152cztM0_level2_bc.evt modeM0/AS1A10_123T08_9000004152cztM0_level2_quad_clean.evt
Size (bytes)2,930,446,080822,456,000
Size2.7 GB 784.4 MB
Events in quadrant A12,426,4695,363,648
Events in quadrant B12,973,4955,556,410
Events in quadrant C13,339,8915,342,710
Events in quadrant D45,998,6614,605,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012020
B012020
C012020
D012020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01224120
B01242320
C01272640
D02373100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A589047181.218933%
B589049421.599212%
C5890415252.588958%
D589041153319.579315%

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 68559 58907 2 2 0.00% 0.00%
B 68559 58905 23 23 0.03% 0.04%
C 68559 58907 2 2 0.00% 0.00%
D 68559 58906 4807 4807 7.01% 8.16%

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 101145 145.37 3155 3105 674.4
A 12 96 92712 132.87 3155 3105 674.4
A 6 16 46822 64.82 3155 3105 674.4
B 10 245 211380 342.95 3226 3157 607.2
B 5 255 141810 228.36 3226 3157 607.2
B 15 33 69669 109.55 3226 3157 607.2
C 3 233 1197912 1648.37 3081 3074 724.9
C 2 114 113538 152.39 3081 3074 724.9
C 14 254 103171 138.09 3081 3074 724.9
D 8 195 18376727 27864.34 2840 2746 659.4
D 1 52 7851241 11902.33 2840 2746 659.4
D 7 80 6215963 9422.41 2840 2746 659.4

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