ASTROSAT CZTI

Data Quality Report

Orbit 15677

Creation date: 2024-06-27T17:11:59.435724
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/AS1T02_084T01_9000002318_15677cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15677cztM0_level2_quad_clean.evt
Size (bytes)465,667,20081,008,640
Size444.1 MB 77.3 MB
Events in quadrant A3,177,357506,580
Events in quadrant B3,330,343512,593
Events in quadrant C3,322,047502,151
Events in quadrant D3,843,810490,997

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131953
B0135682
C0134682
D0153692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6316580.918303%
B6316881.393287%
C63161231.947435%
D63163785.984801%

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 7552 6318 0 0 0.00% 0.00%
B 7552 6318 2 2 0.03% 0.03%
C 7552 6318 0 0 0.00% 0.00%
D 7552 6318 212 212 2.81% 3.36%

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 69 14076 81.14 819 801 163.6
A 4 2 8922 49.64 819 801 163.6
A 13 248 8591 47.61 819 801 163.6
B 0 189 31109 197.85 817 799 153.2
B 4 216 29476 187.19 817 799 153.2
B 3 209 18236 113.82 817 799 153.2
C 14 238 123734 675.62 793 800 182.0
C 3 233 101967 555.99 793 800 182.0
C 13 61 5704 26.95 793 800 182.0
D 1 52 813136 4424.97 770 746 183.6
D 10 70 67888 365.71 770 746 183.6
D 5 51 29391 156.03 770 746 183.6

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