ASTROSAT CZTI

Data Quality Report

Orbit 04897

Creation date: 2024-06-27T14:48:35.137478
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G05_237T01_9000000620_04897cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04897cztM0_level2_quad_clean.evt
Size (bytes)646,643,52087,163,200
Size616.7 MB 83.1 MB
Events in quadrant A3,418,986567,993
Events in quadrant B3,592,404563,354
Events in quadrant C3,191,105560,753
Events in quadrant D8,913,448465,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148688
B0152644
C0142603
D0312651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6902480.695451%
B6904490.709733%
C6904240.347625%
D6905210830.528602%

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 7165 6906 4 4 0.06% 0.06%
B 7165 6906 4 4 0.06% 0.06%
C 7165 6906 0 0 0.00% 0.00%
D 7165 6905 1880 1880 26.24% 27.23%

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 0 50 98071 561.69 841 826 173.1
A 13 14 28898 162.15 841 826 173.1
A 13 251 17776 97.9 841 826 173.1
B 15 204 170852 1034.08 843 826 164.4
B 0 219 37006 220.04 843 826 164.4
B 15 54 27288 160.94 843 826 164.4
C 13 61 6630 30.37 813 821 191.3
C 12 4 4761 20.6 813 821 191.3
C 1 16 4565 19.57 813 821 191.3
D 2 63 4594457 26683.52 684 665 172.2
D 2 234 333408 1932.77 684 665 172.2
D 1 52 298891 1732.28 684 665 172.2

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