ASTROSAT CZTI

Data Quality Report

Orbit 31575

Creation date: 2024-06-27T20:30:19.778041
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/AS1C06_006T05_9000004600_31575cztM0_level2.evt modeM0/AS1C06_006T05_9000004600_31575cztM0_level2_quad_clean.evt
Size (bytes)452,822,40071,095,680
Size431.8 MB 67.8 MB
Events in quadrant A2,306,192466,088
Events in quadrant B3,973,217460,110
Events in quadrant C2,683,455450,440
Events in quadrant D4,416,416430,021

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B091
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010436279
B015875439
C011305297
D017174518

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01042
B01044
C01042
D01044

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4937851.721693%
B49301633.306288%
C49371533.099048%
D49261402.842063%

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 5810 4946 0 0 0.00% 0.00%
B 5819 4938 11 11 0.19% 0.22%
C 5819 4949 11 11 0.19% 0.22%
D 5795 4929 46 46 0.79% 0.93%

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 13 254 9431 73.26 597 584 120.8
A 3 137 5989 44.76 597 584 120.8
A 0 226 5048 36.96 597 584 120.8
B 6 159 1338697 11821.49 586 571 113.2
B 4 80 167540 1475.06 586 571 113.2
B 0 245 43488 379.14 586 571 113.2
C 3 233 163602 1208.55 572 576 134.9
C 10 22 124878 921.48 572 576 134.9
C 14 238 93797 691.07 572 576 134.9
D 8 195 1844667 13321.21 572 554 138.4
D 12 33 202780 1460.81 572 554 138.4
D 12 233 57819 413.66 572 554 138.4

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