ASTROSAT CZTI

Data Quality Report

Orbit 09550

Creation date: 2024-06-27T15:47:36.068516
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/AS1G07_049T02_9000001354_09550cztM0_level2.evt modeM0/AS1G07_049T02_9000001354_09550cztM0_level2_quad_clean.evt
Size (bytes)442,255,680124,260,480
Size421.8 MB 118.5 MB
Events in quadrant A3,274,423835,708
Events in quadrant B3,198,600846,210
Events in quadrant C2,903,132838,074
Events in quadrant D3,595,429810,211

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01288
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013894192
B013546141
C013038169
D015020162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6203380.612607%
B6223510.819540%
C6205230.370669%
D6220500.803859%

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 7471 6281 0 0 0.00% 0.00%
B 7471 6283 8 8 0.11% 0.13%
C 7471 6280 1 1 0.01% 0.02%
D 7471 6284 30 30 0.40% 0.48%

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 1 162 163723 1078.14 759 744 151.2
A 1 178 68911 450.94 759 744 151.2
A 1 161 66909 437.7 759 744 151.2
B 15 85 74675 523.36 761 743 141.3
B 0 214 44488 309.67 761 743 141.3
B 4 81 34695 240.35 761 743 141.3
C 13 61 5596 28.81 742 748 168.3
C 14 234 5337 27.27 742 748 168.3
C 8 222 2059 7.79 742 748 168.3
D 12 227 520141 2921.66 739 723 177.8
D 1 52 120402 673.18 739 723 177.8
D 13 122 49458 274.13 739 723 177.8

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