ASTROSAT CZTI

Data Quality Report

Orbit 02459

Creation date: 2024-06-27T14:18:04.337428
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/AS1G02_018T06_9000000370_02459cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02459cztM0_level2_quad_clean.evt
Size (bytes)421,623,36060,603,840
Size402.1 MB 57.8 MB
Events in quadrant A3,025,198342,897
Events in quadrant B3,140,468354,163
Events in quadrant C3,070,700350,978
Events in quadrant D3,095,021337,850

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131963
B0133142
C0132642
D0136782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6435360.559441%
B6435400.621601%
C6435380.590521%
D6435711.103341%

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 7655 6436 0 0 0.00% 0.00%
B 7655 6436 0 0 0.00% 0.00%
C 7655 6436 0 0 0.00% 0.00%
D 7655 6436 18 18 0.24% 0.28%

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 63 9220 53.1 780 763 159.3
A 8 15 8822 50.61 780 763 159.3
A 12 194 8678 49.7 780 763 159.3
B 3 0 23254 149.72 800 782 150.1
B 15 85 16736 106.3 800 782 150.1
B 5 6 13930 87.6 800 782 150.1
C 8 112 27473 148.23 768 770 180.2
C 12 4 16711 88.49 768 770 180.2
C 8 128 12457 64.87 768 770 180.2
D 6 112 87381 488.92 752 736 177.2
D 7 67 70071 391.24 752 736 177.2
D 9 64 19118 103.73 752 736 177.2

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