ASTROSAT CZTI

Data Quality Report

Orbit 35483

Creation date: 2024-06-27T21:14:06.252403
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/AS1T04_095T01_9000005080_35483cztM0_level2.evt modeM0/AS1T04_095T01_9000005080_35483cztM0_level2_quad_clean.evt
Size (bytes)493,027,200106,182,720
Size470.2 MB 101.3 MB
Events in quadrant A2,859,915710,927
Events in quadrant B3,699,461714,189
Events in quadrant C4,408,278698,474
Events in quadrant D3,560,902677,214

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121803
B0149402
C0169422
D0142932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A593580.134794%
B59352273.824768%
C59352193.689975%
D59361202.021563%

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 7459 5936 3 3 0.04% 0.05%
B 7459 5936 122 122 1.64% 2.06%
C 7459 5936 170 170 2.28% 2.86%
D 7460 5937 104 104 1.39% 1.75%

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 144736 1050.52 678 664 137.1
A 15 169 66042 476.71 678 664 137.1
A 13 6 15246 106.33 678 664 137.1
B 5 172 375348 2986.27 664 650 125.5
B 5 236 313147 2490.54 664 650 125.5
B 5 200 185497 1473.19 664 650 125.5
C 4 254 862172 5696.71 654 657 151.2
C 0 207 363502 2399.29 654 657 151.2
C 0 10 302423 1995.41 654 657 151.2
D 7 80 226939 1414.69 661 642 160.0
D 8 195 146968 914.75 661 642 160.0
D 2 153 95216 591.23 661 642 160.0

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