ASTROSAT CZTI

Data Quality Report

Orbit 27449

Creation date: 2024-06-27T19:40:12.482848
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_249T01_9000003934_27449cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27449cztM0_level2_quad_clean.evt
Size (bytes)522,504,00085,775,040
Size498.3 MB 81.8 MB
Events in quadrant A3,751,711528,077
Events in quadrant B3,916,605527,347
Events in quadrant C3,775,397504,088
Events in quadrant D3,860,909505,721

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159610
B0162100
C0160100
D0166880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76501652.156863%
B76501922.509804%
C76502583.372549%
D76501562.039216%

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 7900 7650 0 0 0.00% 0.00%
B 7900 7651 2 2 0.03% 0.03%
C 7900 7650 1 1 0.01% 0.01%
D 7900 7651 37 37 0.47% 0.48%

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 13008 61.24 972 950 196.9
A 3 137 9485 43.35 972 950 196.9
A 0 226 8188 36.76 972 950 196.9
B 0 189 94708 503.91 955 931 186.1
B 0 230 25806 133.66 955 931 186.1
B 12 111 23461 121.06 955 931 186.1
C 14 238 146071 658.89 924 927 220.3
C 10 22 23959 104.55 924 927 220.3
C 13 61 6398 24.84 924 927 220.3
D 2 250 241936 1068.54 944 920 225.6
D 2 234 34146 147.31 944 920 225.6
D 2 120 13736 56.82 944 920 225.6

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