ASTROSAT CZTI

Data Quality Report

Orbit 51167

Creation date: 2025-03-15T08:49:35.667184
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/AS1C07_001T01_9000006454_51167cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51167cztM0_level2_quad_clean.evt
Size (bytes)998,369,28081,823,680
Size952.1 MB 78.0 MB
Events in quadrant A13,907,074310,534
Events in quadrant B4,584,562685,328
Events in quadrant C5,715,542610,214
Events in quadrant D12,211,597384,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0461150
B0184380
C0218120
D0411510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6975413059.211470%
B69752924.186380%
C69752864.100358%
D6975283040.573477%

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 6975 6975 3825 3825 54.84% 54.84%
B 6975 6975 169 169 2.42% 2.42%
C 6975 6975 258 258 3.70% 3.70%
D 6975 6975 3091 3091 44.32% 44.32%

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 14 254 4347054 31738.33 553 540 136.9
A 4 4 3492170 25495.95 553 540 136.9
A 4 207 1386418 10119.71 553 540 136.9
B 5 185 472867 3035.13 722 697 155.6
B 4 171 273043 1750.65 722 697 155.6
B 10 60 243969 1563.76 722 697 155.6
C 12 247 1020808 5319.51 704 701 191.8
C 15 147 447770 2331.31 704 701 191.8
C 15 157 330126 1717.84 704 701 191.8
D 8 176 8439564 51486.83 591 571 163.9
D 2 216 196856 1197.55 591 571 163.9
D 7 60 144258 876.64 591 571 163.9

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