ASTROSAT CZTI

Data Quality Report

Orbit 45803

Creation date: 2024-06-27T23:16:21.024657
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/AS1T05_088T01_9000006126_45803cztM0_level2.fits modeM0/AS1T05_088T01_9000006126_45803cztM0_level2_quad_clean.evt
Size (bytes)2,787,580,800335,759,040
Size2.6 GB 320.2 MB
Events in quadrant A20,807,1592,522,130
Events in quadrant B29,939,7381,919,952
Events in quadrant C12,248,5492,475,464
Events in quadrant D38,373,3281,616,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780986
B01053664
C0535894
D01305024

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A236696732.843382%
B23670615025.982256%
C236705962.517955%
D23670718730.363329%

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 26324 23673 231 231 0.88% 0.98%
B 26325 23673 4157 4157 15.79% 17.56%
C 26325 23674 442 442 1.68% 1.87%
D 26325 23673 7002 7002 26.60% 29.58%

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 10 83 9651520 18017.05 2600 2544 535.5
A 13 248 890152 1657.39 2600 2544 535.5
A 2 79 80607 145.76 2600 2544 535.5
B 3 112 18826873 40765.79 2377 2300 461.8
B 5 172 621084 1340.01 2377 2300 461.8
B 4 171 279082 599.39 2377 2300 461.8
C 12 2 2061329 3446.1 2554 2569 597.4
C 12 249 72759 117.49 2554 2569 597.4
C 12 250 68671 110.65 2554 2569 597.4
D 11 241 18038152 30906.94 2314 2244 583.6
D 1 52 5890131 10089.68 2314 2244 583.6
D 8 48 2358731 4038.16 2314 2244 583.6

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