ASTROSAT CZTI

Data Quality Report

Orbit 20210223_T03_272T01_9000004204_level2

Creation date: 2021-02-25T10:00:04.687432
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_272T01_9000004204cztM0_level2_bc.evt modeM0/AS1T03_272T01_9000004204cztM0_level2_quad_clean.evt
Size (bytes)5,941,512,000983,257,920
Size5.5 GB 937.7 MB
Events in quadrant A16,343,2006,664,632
Events in quadrant B22,411,1776,691,665
Events in quadrant C72,571,9095,790,421
Events in quadrant D63,550,4855,507,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015200
B015200
C015200
D015200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01555900
B01795000
C03407860
D03246550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A746567671.027379%
B7465620932.803526%
C746562125828.474604%
D746561952526.153290%

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 89267 74663 0 0 0.00% 0.00%
B 89268 74657 29 29 0.03% 0.04%
C 89267 74657 3417 3417 3.83% 4.58%
D 89267 74614 7616 7616 8.53% 10.21%

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 140501 153.93 4185 4127 885.9
A 0 13 125463 136.96 4185 4127 885.9
A 0 226 26763 25.55 4185 4127 885.9
B 10 245 2644695 3405.28 4166 4082 775.4
B 0 229 1797467 2312.72 4166 4082 775.4
B 0 183 929993 1194.04 4166 4082 775.4
C 3 233 58243033 67153.45 3641 3637 867.3
C 2 114 135700 152.28 3641 3637 867.3
C 14 254 129006 144.56 3641 3637 867.3
D 7 223 27096192 32607.77 3606 3498 830.9
D 1 52 15590229 18759.61 3606 3498 830.9
D 8 195 3371686 4053.83 3606 3498 830.9

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