ASTROSAT CZTI

Data Quality Report

Orbit 35800

Creation date: 2024-06-27T21:18:20.320210
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/AS1A09_029T10_9000005140_35800cztM0_level2.evt modeM0/AS1A09_029T10_9000005140_35800cztM0_level2_quad_clean.evt
Size (bytes)397,402,56064,391,040
Size379.0 MB 61.4 MB
Events in quadrant A2,713,444415,077
Events in quadrant B3,129,720411,271
Events in quadrant C2,803,222390,616
Events in quadrant D3,045,567378,598

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113573
B0125762
C0115902
D0124632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50501282.534653%
B50501062.099010%
C50501593.148515%
D50501843.643564%

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 7052 5051 115 115 1.63% 2.28%
B 7052 5051 77 77 1.09% 1.52%
C 7052 5051 135 135 1.91% 2.67%
D 7051 5050 182 182 2.58% 3.60%

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 15 169 272267 2354.46 573 563 115.4
A 10 83 158100 1365.14 573 563 115.4
A 7 3 45601 390.28 573 563 115.4
B 5 172 373882 3406.36 571 557 109.6
B 0 213 214368 1950.89 571 557 109.6
B 5 255 103376 938.16 571 557 109.6
C 0 10 354713 2821.44 542 545 125.5
C 15 214 209908 1667.86 542 545 125.5
C 0 207 75948 600.69 542 545 125.5
D 13 249 608803 4546.1 543 527 133.8
D 8 195 95003 706.09 543 527 133.8
D 2 153 47032 347.57 543 527 133.8

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