ASTROSAT CZTI

Data Quality Report

Orbit 26650

Creation date: 2024-06-27T19:31:23.161857
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_145T01_9000003848_26650cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26650cztM0_level2_quad_clean.evt
Size (bytes)597,911,04068,526,720
Size570.2 MB 65.4 MB
Events in quadrant A3,745,010423,696
Events in quadrant B3,422,495425,113
Events in quadrant C3,401,052408,057
Events in quadrant D7,106,549372,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151250
B0136410
C0135630
D0254340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63861031.612903%
B6386871.362355%
C63861342.098340%
D6386135021.139994%

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 7496 6387 0 0 0.00% 0.00%
B 7496 6387 0 0 0.00% 0.00%
C 7496 6387 1 1 0.01% 0.02%
D 7496 6387 993 993 13.25% 15.55%

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 0 13 412646 2384.72 864 848 172.7
A 13 254 10368 55.13 864 848 172.7
A 3 137 7451 38.24 864 848 172.7
B 3 112 31007 188.87 849 831 159.8
B 0 219 30358 184.81 849 831 159.8
B 0 190 21840 131.49 849 831 159.8
C 14 238 133234 688.68 823 830 192.3
C 3 233 24908 125.24 823 830 192.3
C 15 208 24553 123.39 823 830 192.3
D 7 80 2573646 12923.96 737 722 199.1
D 1 52 1634365 8205.89 737 722 199.1
D 2 250 50176 248.41 737 722 199.1

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