ASTROSAT CZTI

Data Quality Report

Orbit 22127

Creation date: 2024-06-27T18:37:10.441268
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/AS1T03_145T01_9000003278_22127cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22127cztM0_level2_quad_clean.evt
Size (bytes)432,682,56079,614,720
Size412.6 MB 75.9 MB
Events in quadrant A3,038,838498,805
Events in quadrant B3,218,470507,471
Events in quadrant C3,100,345485,691
Events in quadrant D3,310,381471,880

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130791
B0135349
C0131711
D0140921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6400240.375000%
B6400370.578125%
C6400450.703125%
D64001201.875000%

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 7435 6401 1 1 0.01% 0.02%
B 7435 6401 5 5 0.07% 0.08%
C 7435 6401 0 0 0.00% 0.00%
D 7435 6401 87 87 1.17% 1.36%

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 5 16 15011 90.02 784 767 158.2
A 13 254 11027 64.84 784 767 158.2
A 3 137 6632 37.07 784 767 158.2
B 3 64 53902 357.39 785 766 148.7
B 10 246 49485 327.68 785 766 148.7
B 0 230 26036 169.97 785 766 148.7
C 14 238 120799 674.92 762 766 177.8
C 10 22 7219 36.28 762 766 177.8
C 13 61 5345 25.75 762 766 177.8
D 1 52 274183 1488.48 758 738 183.7
D 13 172 71248 383.82 758 738 183.7
D 2 133 31869 169.46 758 738 183.7

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