ASTROSAT CZTI

Data Quality Report

Orbit 11651

Creation date: 2024-06-27T16:16:27.544208
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/AS1A04_037T01_9000001716_11651cztM0_level2.evt modeM0/AS1A04_037T01_9000001716_11651cztM0_level2_quad_clean.evt
Size (bytes)524,790,72072,866,880
Size500.5 MB 69.5 MB
Events in quadrant A4,759,005432,510
Events in quadrant B3,595,286456,308
Events in quadrant C3,270,915449,492
Events in quadrant D3,838,418425,633

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186893
B0144042
C0135702
D0152792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63403335.252366%
B63401432.255521%
C6340861.356467%
D63401362.145110%

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 7611 6342 132 132 1.73% 2.08%
B 7611 6342 16 16 0.21% 0.25%
C 7611 6342 0 0 0.00% 0.00%
D 7611 6342 59 59 0.78% 0.93%

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 8 5 949701 5680.5 834 821 167.0
A 1 162 222359 1326.24 834 821 167.0
A 1 178 130792 778.08 834 821 167.0
B 4 239 220662 1388.25 849 829 158.4
B 15 204 54864 341.23 849 829 158.4
B 12 111 18093 109.02 849 829 158.4
C 13 61 5986 26.77 838 844 192.1
C 3 202 2073 6.4 838 844 192.1
C 12 4 1950 5.76 838 844 192.1
D 1 52 311577 1573.24 826 806 197.5
D 8 195 145258 731.27 826 806 197.5
D 13 122 83711 419.7 826 806 197.5

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