ASTROSAT CZTI

Data Quality Report

Orbit 35420

Creation date: 2022-04-21T00:31:54.917431
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_097T07_9000005072_35420cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35420cztM0_level2_quad_clean.evt
Size (bytes)544,144,32061,980,480
Size518.9 MB 59.1 MB
Events in quadrant A2,611,958399,801
Events in quadrant B6,414,286373,093
Events in quadrant C3,199,880383,732
Events in quadrant D3,903,088357,006

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107973
B0227592
C0125412
D0150072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516650.096787%
B516692817.963608%
C51661563.019744%
D51662955.710414%

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 9051 5168 0 0 0.00% 0.00%
B 9051 5168 674 674 7.45% 13.04%
C 9051 5168 122 122 1.35% 2.36%
D 9051 5168 225 225 2.49% 4.35%

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 121917 944.48 641 629 128.4
A 13 6 11001 80.77 641 629 128.4
A 13 254 7797 55.82 641 629 128.4
B 4 251 2252690 19447.68 610 596 115.8
B 5 236 1137900 9821.05 610 596 115.8
B 5 172 217748 1875.19 610 596 115.8
C 0 10 453914 3156.11 616 623 143.6
C 15 214 209707 1455.78 616 623 143.6
C 0 207 121813 843.81 616 623 143.6
D 7 80 830738 5594.77 602 586 148.4
D 8 195 310289 2087.23 602 586 148.4
D 13 249 177990 1195.61 602 586 148.4

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