ASTROSAT CZTI

Data Quality Report

Orbit 42629

Creation date: 2024-06-27T22:42:24.585768
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/AS1A05_174T01_9000005820_42629cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42629cztM0_level2_quad_clean.evt
Size (bytes)376,603,200105,292,800
Size359.2 MB 100.4 MB
Events in quadrant A3,408,902700,860
Events in quadrant B3,095,734722,258
Events in quadrant C3,144,610692,068
Events in quadrant D3,795,214628,212

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140032
B0133802
C0132102
D0157363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6374160.251020%
B6375340.533333%
C6375150.235294%
D63741752.745529%

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 9599 6376 2 2 0.02% 0.03%
B 9600 6377 10 10 0.10% 0.16%
C 9600 6377 9 9 0.09% 0.14%
D 9599 6376 153 153 1.59% 2.40%

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 612933 4173.47 715 700 146.7
A 2 79 12875 82.99 715 700 146.7
A 13 248 9988 63.31 715 700 146.7
B 0 245 247603 1788.95 711 692 138.0
B 7 202 21870 153.44 711 692 138.0
B 5 255 19749 138.07 711 692 138.0
C 15 214 262712 1581.1 706 710 165.7
C 14 254 111766 670.19 706 710 165.7
C 15 111 9421 52.57 706 710 165.7
D 13 249 375312 2191.5 697 675 170.9
D 1 52 345087 2014.7 697 675 170.9
D 12 6 150678 877.47 697 675 170.9

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