ASTROSAT CZTI

Data Quality Report

Orbit 12248

Creation date: 2024-06-27T16:24:26.384110
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/AS1C03_005T01_9000001810_12248cztM0_level2.evt modeM0/AS1C03_005T01_9000001810_12248cztM0_level2_quad_clean.evt
Size (bytes)478,252,800122,423,040
Size456.1 MB 116.8 MB
Events in quadrant A4,207,033817,948
Events in quadrant B3,466,737826,420
Events in quadrant C2,920,874814,963
Events in quadrant D3,440,635787,933

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169652
B0147431
C0134881
D0150511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66041702.574197%
B66041562.362205%
C6604190.287704%
D6604981.483949%

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 7245 6606 10 10 0.14% 0.15%
B 7245 6606 46 46 0.63% 0.70%
C 7245 6606 2 2 0.03% 0.03%
D 7245 6606 68 68 0.94% 1.03%

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 13 251 454777 2961.1 757 742 153.3
A 1 162 263123 1711.18 757 742 153.3
A 1 178 156487 1015.73 757 742 153.3
B 4 239 218014 1542.78 758 741 140.8
B 0 219 77516 545.15 758 741 140.8
B 3 64 56599 396.63 758 741 140.8
C 4 175 34275 198.51 730 733 169.0
C 15 208 21822 124.81 730 733 169.0
C 13 61 5411 27.69 730 733 169.0
D 1 52 274526 1423.08 723 706 192.4
D 13 104 120150 620.77 723 706 192.4
D 2 33 119997 619.97 723 706 192.4

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