ASTROSAT CZTI

Data Quality Report

Orbit 30875

Creation date: 2024-06-27T20:20:38.463848
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/AS1A10_071T49_9000004462_30875cztM0_level2.evt modeM0/AS1A10_071T49_9000004462_30875cztM0_level2_quad_clean.evt
Size (bytes)628,784,64081,149,760
Size599.7 MB 77.4 MB
Events in quadrant A3,323,948528,162
Events in quadrant B6,879,240528,120
Events in quadrant C3,866,337488,445
Events in quadrant D4,555,508480,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134142
B0250852
C0151442
D0177662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6192200.322997%
B61921963.165375%
C61921852.987726%
D61922634.247416%

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 7572 6193 0 0 0.00% 0.00%
B 7572 6193 45 45 0.59% 0.73%
C 7572 6193 76 76 1.00% 1.23%
D 7572 6193 293 293 3.87% 4.73%

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 11593 63.25 860 847 169.9
A 3 137 7939 41.74 860 847 169.9
A 0 226 7192 37.35 860 847 169.9
B 6 159 1751387 10997.41 853 834 159.2
B 6 36 1506497 9458.95 853 834 159.2
B 4 80 123354 769.7 853 834 159.2
C 3 233 388083 2067.67 805 813 187.3
C 14 238 133061 706.08 805 813 187.3
C 2 16 127021 673.84 805 813 187.3
D 12 233 826058 4424.67 797 780 186.5
D 8 195 510974 2735.37 797 780 186.5
D 2 250 117941 628.15 797 780 186.5

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