ASTROSAT CZTI

Data Quality Report

Orbit 07158

Creation date: 2024-06-27T15:16:18.118735
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/AS1G06_029T02_9000000974_07158cztM0_level2.evt modeM0/AS1G06_029T02_9000000974_07158cztM0_level2_quad_clean.evt
Size (bytes)1,240,928,640215,550,720
Size1.2 GB 205.6 MB
Events in quadrant A8,120,4691,337,967
Events in quadrant B8,583,3411,350,513
Events in quadrant C8,027,0481,336,618
Events in quadrant D11,633,0531,262,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366904
B0377173
C0366913
D0466053

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180051550.860872%
B180051821.010830%
C180051450.805332%
D180057654.248820%

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 19855 18005 3 3 0.02% 0.02%
B 19855 18005 7 7 0.04% 0.04%
C 19855 18005 3 3 0.02% 0.02%
D 19855 18005 493 493 2.48% 2.74%

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 15 57687 131.19 2083 2034 424.2
A 13 248 26900 58.62 2083 2034 424.2
A 0 226 20035 42.43 2083 2034 424.2
B 0 214 156513 383.8 2097 2043 402.5
B 0 219 144515 353.99 2097 2043 402.5
B 4 81 75359 182.16 2097 2043 402.5
C 4 254 97785 203.68 2024 2033 470.1
C 13 61 15821 29.33 2024 2033 470.1
C 8 128 14361 26.22 2024 2033 470.1
D 2 216 2049124 4180.46 1999 1934 489.7
D 2 14 898617 1831.07 1999 1934 489.7
D 8 195 831748 1694.52 1999 1934 489.7

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