ASTROSAT CZTI

Data Quality Report

Orbit 34958

Creation date: 2022-03-17T04:01:23.333441
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/AS1A11_047T09_9000005010_34958cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34958cztM0_level2_quad_clean.evt
Size (bytes)442,080,00066,790,080
Size421.6 MB 63.7 MB
Events in quadrant A2,453,471437,223
Events in quadrant B3,504,472421,668
Events in quadrant C2,821,330425,027
Events in quadrant D4,271,072388,938

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103532
B0134911
C0112041
D0161231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498080.160643%
B49803396.807229%
C4980821.646586%
D49802404.819277%

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 7103 4981 1 1 0.01% 0.02%
B 7103 4981 275 275 3.87% 5.52%
C 7103 4981 68 68 0.96% 1.37%
D 7103 4981 214 214 3.01% 4.30%

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 10 83 70498 574.59 610 600 121.6
A 8 192 8680 66.42 610 600 121.6
A 13 254 8622 65.94 610 600 121.6
B 5 172 849478 7647.69 590 576 111.0
B 4 232 193748 1740.27 590 576 111.0
B 0 190 135413 1214.74 590 576 111.0
C 0 10 273850 1975.27 593 600 138.3
C 15 214 208670 1504.09 593 600 138.3
C 14 67 9872 67.03 593 600 138.3
D 8 195 1166221 8209.42 582 567 142.0
D 10 118 364086 2560.18 582 567 142.0
D 13 249 140244 983.71 582 567 142.0

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