ASTROSAT CZTI

Data Quality Report

Orbit 08627

Creation date: 2024-06-27T15:35:10.004207
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/AS1G07_024T01_9000001206_08627cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08627cztM0_level2_quad_clean.evt
Size (bytes)410,843,520120,193,920
Size391.8 MB 114.6 MB
Events in quadrant A2,802,042793,868
Events in quadrant B3,025,017828,396
Events in quadrant C2,857,964816,056
Events in quadrant D3,326,726760,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129253
B0132242
C0130022
D0147148

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6323420.664242%
B6323590.933101%
C6323310.490274%
D63221752.768111%

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 7573 6323 7 7 0.09% 0.11%
B 7573 6324 7 7 0.09% 0.11%
C 7573 6324 0 0 0.00% 0.00%
D 7573 6323 129 129 1.70% 2.04%

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 15 174 23991 159.26 720 705 146.2
A 0 226 6733 41.23 720 705 146.2
A 12 194 6201 37.59 720 705 146.2
B 0 214 46567 334.15 740 722 137.2
B 10 246 24175 170.94 740 722 137.2
B 4 80 21371 150.5 740 722 137.2
C 8 208 36776 219.1 714 717 164.6
C 14 64 26254 155.17 714 717 164.6
C 13 61 5498 29.05 714 717 164.6
D 10 253 341058 2023.17 695 673 168.2
D 12 221 155071 917.71 695 673 168.2
D 7 71 78334 461.6 695 673 168.2

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