ASTROSAT CZTI

Data Quality Report

Orbit 23169

Creation date: 2024-06-27T18:50:49.579617
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/AS1A07_148T05_9000003424_23169cztM0_level2.evt modeM0/AS1A07_148T05_9000003424_23169cztM0_level2_quad_clean.evt
Size (bytes)533,856,96065,491,200
Size509.1 MB 62.5 MB
Events in quadrant A3,329,400386,095
Events in quadrant B3,433,636393,136
Events in quadrant C3,867,290377,228
Events in quadrant D5,077,097353,188

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141401
B0143161
C0159851
D0196341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6786620.913646%
B6787630.928245%
C67871311.930161%
D67875197.646972%

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 7766 6786 1 1 0.01% 0.01%
B 7767 6787 5 5 0.06% 0.07%
C 7767 6787 24 24 0.31% 0.35%
D 7767 6787 440 440 5.66% 6.48%

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 13 254 9190 47.56 862 842 175.5
A 0 226 7620 38.61 862 842 175.5
A 3 137 7306 36.82 862 842 175.5
B 0 190 36011 212.5 856 834 165.5
B 12 111 20086 116.3 856 834 165.5
B 4 216 19333 111.75 856 834 165.5
C 0 10 416986 2140.77 826 830 194.4
C 14 238 129882 663.86 826 830 194.4
C 8 208 91425 466.03 826 830 194.4
D 7 238 1123353 5554.24 821 797 202.1
D 1 239 534499 2640.68 821 797 202.1
D 1 52 210654 1038.34 821 797 202.1

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