ASTROSAT CZTI

Data Quality Report

Orbit 20230225_T05_086T01_9000005518_level2

Creation date: 2023-02-27T11:36:04.483698
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/AS1T05_086T01_9000005518cztM0_level2.fits modeM0/AS1T05_086T01_9000005518cztM0_level2_quad_clean.evt
Size (bytes)687,980,160854,674,560
Size656.1 MB 815.1 MB
Events in quadrant A4,163,1005,687,277
Events in quadrant B4,050,7285,750,630
Events in quadrant C3,864,1884,755,795
Events in quadrant D3,337,0124,278,218

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016100
B016100
C016100
D016100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01714330
B01645530
C02818730
D02450710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02850
B02850
C02850
D02850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A789663950.500215%
B789642000.253280%
C78963834810.572040%
D7896677489.811818%

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 106673 78965 0 0 0.00% 0.00%
B 106673 78957 0 0 0.00% 0.00%
C 106673 78916 0 0 0.00% 0.00%
D 106673 78652 0 0 0.00% 0.00%

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 7 110 3599 9.36 1088 1022 275.3
A 9 19 3387 8.59 1088 1022 275.3
A 0 29 3383 8.58 1088 1022 275.3
B 2 9 3498 12.08 1068 1022 205.0
B 3 80 2978 9.54 1068 1022 205.0
B 2 8 2871 9.02 1068 1022 205.0
C 1 81 3554 9.89 1020 957 262.6
C 1 80 3391 9.27 1020 957 262.6
C 3 202 3066 8.03 1020 957 262.6
D 10 189 2488 6.31 954 869 256.5
D 6 38 2444 6.14 954 869 256.5
D 7 3 2428 6.07 954 869 256.5

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