ASTROSAT CZTI

Data Quality Report

Orbit 04301

Creation date: 2024-06-27T14:40:07.363286
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/AS1G05_219T01_9000000540_04301cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04301cztM0_level2_quad_clean.evt
Size (bytes)565,986,24076,979,520
Size539.8 MB 73.4 MB
Events in quadrant A3,871,234470,889
Events in quadrant B3,612,251483,660
Events in quadrant C3,162,573474,050
Events in quadrant D6,040,607435,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162283
B0152802
C0142002
D0229122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66934106.125803%
B66931231.837741%
C6693380.567757%
D6693104015.538622%

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 7603 6693 308 308 4.05% 4.60%
B 7603 6693 24 24 0.32% 0.36%
C 7603 6694 5 5 0.07% 0.07%
D 7603 6693 863 863 11.35% 12.89%

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 15 234 793753 5005.99 767 752 158.4
A 0 50 87437 547.22 767 752 158.4
A 13 14 15175 91.05 767 752 158.4
B 14 167 171209 1104.39 795 778 154.3
B 7 252 124439 801.32 795 778 154.3
B 10 16 71987 461.44 795 778 154.3
C 9 247 158273 884.21 763 770 178.1
C 10 65 8002 40.6 763 770 178.1
C 14 67 6467 31.98 763 770 178.1
D 13 53 2638615 14998.39 720 699 175.9
D 2 136 503265 2857.43 720 699 175.9
D 12 22 36423 203.11 720 699 175.9

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