ASTROSAT CZTI

Data Quality Report

Orbit 36278

Creation date: 2022-06-14T10:48:34.126045
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/AS1A10_071T35_9000005184_36278cztM0_level2.evt modeM0/AS1A10_071T35_9000005184_36278cztM0_level2_quad_clean.evt
Size (bytes)415,811,52050,215,680
Size396.5 MB 47.9 MB
Events in quadrant A2,513,572297,026
Events in quadrant B3,148,463301,158
Events in quadrant C2,948,198289,210
Events in quadrant D3,635,945275,175

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106123
B0125932
C0117762
D0142482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510160.117624%
B51011843.607136%
C5101901.764360%
D51012885.645952%

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 9197 5103 1 1 0.01% 0.02%
B 9197 5103 139 139 1.51% 2.72%
C 9197 5103 84 84 0.91% 1.65%
D 9197 5103 257 257 2.79% 5.04%

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 171191 1397.67 597 587 122.1
A 13 248 12934 101.15 597 587 122.1
A 9 143 10715 82.97 597 587 122.1
B 8 128 309668 2734.73 588 573 113.0
B 5 172 245915 2170.67 588 573 113.0
B 5 236 183035 1614.34 588 573 113.0
C 0 10 418750 3090.24 577 582 135.3
C 15 214 213887 1576.31 577 582 135.3
C 0 207 65660 480.92 577 582 135.3
D 12 6 561333 4051.21 561 545 138.4
D 13 249 441831 3187.91 561 545 138.4
D 13 171 114932 826.35 561 545 138.4

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