ASTROSAT CZTI

Data Quality Report

Orbit 17108

Creation date: 2024-06-27T17:32:13.132889
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/AS1A05_004T03_9000002538_17108cztM0_level2.evt modeM0/AS1A05_004T03_9000002538_17108cztM0_level2_quad_clean.evt
Size (bytes)440,769,60093,718,080
Size420.4 MB 89.4 MB
Events in quadrant A3,001,491613,392
Events in quadrant B3,125,765635,464
Events in quadrant C3,184,267600,384
Events in quadrant D3,627,242567,615

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127672
B0131472
C0130582
D0148482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6029290.481008%
B6029340.563941%
C6029590.978603%
D60291071.774755%

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 7404 6030 11 11 0.15% 0.18%
B 7404 6030 2 2 0.03% 0.03%
C 7404 6030 0 0 0.00% 0.00%
D 7404 6030 81 81 1.09% 1.34%

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 4 2 55166 355.09 764 749 153.3
A 12 189 10312 62.4 764 749 153.3
A 0 226 6648 38.49 764 749 153.3
B 0 219 23634 159.39 776 758 143.5
B 0 189 17085 113.76 776 758 143.5
B 12 111 16102 106.91 776 758 143.5
C 3 233 159939 918.35 746 753 173.3
C 14 238 114554 656.52 746 753 173.3
C 13 61 5282 26.13 746 753 173.3
D 5 222 511998 2869.8 737 717 178.2
D 10 70 169606 947.97 737 717 178.2
D 1 52 135602 757.1 737 717 178.2

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