ASTROSAT CZTI

Data Quality Report

Orbit 10498

Creation date: 2024-06-27T16:00:11.229693
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/AS1G07_057T01_9000001520_10498cztM0_level2.evt modeM0/AS1G07_057T01_9000001520_10498cztM0_level2_quad_clean.evt
Size (bytes)432,351,36066,807,360
Size412.3 MB 63.7 MB
Events in quadrant A3,042,425387,857
Events in quadrant B3,062,439386,780
Events in quadrant C2,792,776389,466
Events in quadrant D3,778,384431,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300164
B0300157
C0300161
D0289148

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B021
C021
D021

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060317793
B03521922496
C03079718276
D03841723064

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60401272.102649%
B57591332.309429%
C6075901.481481%
D65201131.733129%

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 7558 7129 0 0 0.00% 0.00%
B 7557 6863 0 0 0.00% 0.00%
C 7558 7106 0 0 0.00% 0.00%
D 7558 6977 0 0 0.00% 0.00%

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 15 239 156548 1045.05 725 711 149.1
A 3 80 70724 469.51 725 711 149.1
A 5 16 13494 85.72 725 711 149.1
B 4 239 250385 1843.07 694 678 135.5
B 0 214 55105 401.72 694 678 135.5
B 11 51 20671 147.57 694 678 135.5
C 14 234 14160 80.15 708 712 167.8
C 8 128 9285 51.1 708 712 167.8
C 8 112 5400 27.94 708 712 167.8
D 1 20 365723 1954.53 762 742 186.7
D 2 16 161257 859.58 762 742 186.7
D 8 195 160876 857.54 762 742 186.7

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