ASTROSAT CZTI

Data Quality Report

Orbit 14970

Creation date: 2024-06-27T17:01:58.238389
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/AS1T02_056T01_9000002210_14970cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14970cztM0_level2_quad_clean.evt
Size (bytes)508,904,640103,507,200
Size485.3 MB 98.7 MB
Events in quadrant A3,717,991670,721
Events in quadrant B4,074,911662,948
Events in quadrant C3,515,042652,999
Events in quadrant D3,609,594640,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155082
B0165831
C0150031
D0157901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7277951.305483%
B72771972.707160%
C7277480.659612%
D72771552.129999%

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 7703 7280 5 5 0.06% 0.07%
B 7703 7280 74 74 0.96% 1.02%
C 7703 7280 3 3 0.04% 0.04%
D 7703 7280 50 50 0.65% 0.69%

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 12 189 114882 631.11 886 867 180.7
A 1 162 74211 405.98 886 867 180.7
A 1 178 34093 183.92 886 867 180.7
B 3 64 321324 1906.17 875 853 168.1
B 10 16 143302 847.29 875 853 168.1
B 0 219 62136 364.51 875 853 168.1
C 3 233 159334 790.27 855 859 200.5
C 10 22 14026 65.66 855 859 200.5
C 13 61 6247 26.87 855 859 200.5
D 15 0 177653 814.48 855 835 217.1
D 7 38 50377 228.21 855 835 217.1
D 13 249 42152 190.32 855 835 217.1

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