ASTROSAT CZTI

Data Quality Report

Orbit 09295

Creation date: 2024-06-27T15:44:05.660206
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_077T03_9000001310_09295cztM0_level2.evt modeM0/AS1G07_077T03_9000001310_09295cztM0_level2_quad_clean.evt
Size (bytes)1,764,299,520325,739,520
Size1.6 GB 310.6 MB
Events in quadrant A15,370,4022,013,854
Events in quadrant B12,131,1862,074,963
Events in quadrant C11,479,9362,061,355
Events in quadrant D12,739,4741,974,079

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0572
B0570
C0572
D0571

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0638751442
B0544101141
C0530841035
D0575041244

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05284
B05286
C05286
D052812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A252594341.718199%
B253022320.916924%
C25325870.343534%
D253052390.944477%

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 31529 25689 156 156 0.49% 0.61%
B 31529 25691 28 28 0.09% 0.11%
C 31529 25708 1 1 0.00% 0.00%
D 31529 25690 125 125 0.40% 0.49%

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 8 5 2899524 4906.76 2952 2889 590.3
A 5 16 229058 383.12 2952 2889 590.3
A 12 236 228128 381.54 2952 2889 590.3
B 0 214 225360 398.6 2995 2920 558.1
B 4 173 94741 164.54 2995 2920 558.1
B 12 111 61353 104.71 2995 2920 558.1
C 14 67 46136 64.72 2920 2938 667.5
C 10 22 23907 31.42 2920 2938 667.5
C 13 61 22089 28.69 2920 2938 667.5
D 12 233 535684 761.68 2864 2792 699.6
D 1 52 521433 741.31 2864 2792 699.6
D 7 71 232736 328.67 2864 2792 699.6

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter