ASTROSAT CZTI

Data Quality Report

Orbit 03820

Creation date: 2024-06-27T14:33:58.254449
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/AS1G05_189T01_9000000492_03820cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03820cztM0_level2_quad_clean.evt
Size (bytes)415,759,68068,088,960
Size396.5 MB 64.9 MB
Events in quadrant A2,879,325423,094
Events in quadrant B3,608,305421,037
Events in quadrant C2,715,213411,398
Events in quadrant D2,993,200399,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122142
B0142801
C0119901
D0129611

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5811971.669248%
B58112514.319394%
C5811591.015316%
D58111041.789709%

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 7051 5811 14 14 0.20% 0.24%
B 7051 5811 135 135 1.91% 2.32%
C 7051 5812 2 2 0.03% 0.03%
D 7051 5811 61 61 0.87% 1.05%

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 13 251 57134 385.8 718 704 146.3
A 0 199 41010 275.57 718 704 146.3
A 0 226 10914 69.8 718 704 146.3
B 14 167 742284 5367.08 713 697 138.2
B 15 204 47976 342.17 713 697 138.2
B 0 173 37509 266.42 713 697 138.2
C 9 247 14252 84.78 684 690 160.0
C 8 128 8589 49.38 684 690 160.0
C 1 16 6341 35.33 684 690 160.0
D 14 34 171761 1022.58 684 664 167.3
D 13 223 76190 451.39 684 664 167.3
D 8 112 46051 271.26 684 664 167.3

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