ASTROSAT CZTI

Data Quality Report

Orbit 37772

Creation date: 2024-06-27T21:44:15.273126
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/AS1A11_106T02_9000005344_37772cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37772cztM0_level2_quad_clean.evt
Size (bytes)446,184,00090,339,840
Size425.5 MB 86.2 MB
Events in quadrant A2,994,535586,645
Events in quadrant B3,391,615576,916
Events in quadrant C2,859,899597,282
Events in quadrant D3,872,230569,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127403
B0142062
C0121782
D0155602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5807320.551059%
B58071973.392457%
C5807400.688824%
D58071041.790942%

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 7119 5808 24 24 0.34% 0.41%
B 7119 5808 166 166 2.33% 2.86%
C 7119 5808 33 33 0.46% 0.57%
D 7119 5807 93 93 1.31% 1.60%

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 10 83 353126 2700.83 644 630 130.5
A 9 143 98798 752.16 644 630 130.5
A 13 6 16202 119.31 644 630 130.5
B 4 81 292636 2417.66 630 616 120.8
B 5 172 247472 2043.74 630 616 120.8
B 0 213 129691 1068.62 630 616 120.8
C 15 214 240226 1616.96 631 635 148.2
C 0 10 116909 784.72 631 635 148.2
C 12 250 21937 143.76 631 635 148.2
D 12 235 625481 4086.87 627 611 152.9
D 13 249 243580 1589.1 627 611 152.9
D 2 249 134697 876.97 627 611 152.9

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