ASTROSAT CZTI

Data Quality Report

Orbit 32354

Creation date: 2024-06-27T20:39:16.134181
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/AS1A09_131T01_9000004702_32354cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32354cztM0_level2_quad_clean.evt
Size (bytes)613,154,880130,521,600
Size584.8 MB 124.5 MB
Events in quadrant A3,246,741894,147
Events in quadrant B6,266,408871,907
Events in quadrant C3,592,284884,545
Events in quadrant D5,019,562844,079

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139533
B0234232
C0149752
D0195492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6571440.669609%
B65716149.344088%
C65712313.515447%
D65712023.074114%

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 7571 6572 1 1 0.01% 0.02%
B 7571 6572 291 291 3.84% 4.43%
C 7571 6572 42 42 0.55% 0.64%
D 7571 6572 75 75 0.99% 1.14%

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 12 189 93718 582.23 799 783 159.6
A 15 174 41455 254.81 799 783 159.6
A 13 6 23695 143.54 799 783 159.6
B 6 159 1890617 13147.7 775 756 143.7
B 10 245 785087 5456.57 775 756 143.7
B 5 172 280779 1948.11 775 756 143.7
C 0 10 146580 814.94 776 780 178.9
C 14 238 141122 784.43 776 780 178.9
C 3 233 101901 565.21 776 780 178.9
D 8 195 1319715 7235.33 769 750 182.3
D 12 218 148746 811.85 769 750 182.3
D 14 52 126754 691.21 769 750 182.3

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