ASTROSAT CZTI

Data Quality Report

Orbit 03760

Creation date: 2024-06-27T14:33:19.129678
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_248T01_9000000486_03760cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03760cztM0_level2_quad_clean.evt
Size (bytes)610,303,68053,323,200
Size582.0 MB 50.9 MB
Events in quadrant A3,112,970301,122
Events in quadrant B3,723,107296,275
Events in quadrant C2,863,673296,369
Events in quadrant D8,354,493278,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134952
B0152081
C0129331
D0291091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6322771.217969%
B6322891.407782%
C6322230.363809%
D6322202732.062638%

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 7417 6323 23 23 0.31% 0.36%
B 7417 6322 34 34 0.46% 0.54%
C 7417 6323 0 0 0.00% 0.00%
D 7417 6322 2001 2001 26.98% 31.65%

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 0 50 95935 627.0 734 718 151.9
A 13 251 86996 568.13 734 718 151.9
A 0 118 78904 514.85 734 718 151.9
B 15 204 488121 3407.44 740 722 143.0
B 5 200 106590 740.13 740 722 143.0
B 4 81 98255 681.86 740 722 143.0
C 8 208 36236 213.96 710 713 166.0
C 10 34 32739 192.9 710 713 166.0
C 12 4 17145 98.97 710 713 166.0
D 12 79 5357034 35111.61 620 601 152.6
D 1 20 291474 1906.68 620 601 152.6
D 13 239 139075 907.7 620 601 152.6

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
Veto Counter