ASTROSAT CZTI

Data Quality Report

Orbit 29461

Creation date: 2024-06-27T20:04:22.199363
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_102T08_9000004240_29461cztM0_level2.evt modeM0/AS1A10_102T08_9000004240_29461cztM0_level2_quad_clean.evt
Size (bytes)572,031,36055,667,520
Size545.5 MB 53.1 MB
Events in quadrant A2,624,315361,585
Events in quadrant B2,700,632364,290
Events in quadrant C2,886,239329,715
Events in quadrant D8,762,119266,813

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133692329
B0135932359
C0140742369
D0384168898

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114007742678916046
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013026
B012517
C013026
D012723

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52292284.360298%
B52162464.716258%
C522461211.715161%
D4983186137.346980%

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 7684 5357 1 1 0.01% 0.02%
B 7688 5341 1 1 0.01% 0.02%
C 7676 5331 0 0 0.00% 0.00%
D 7670 5113 1819 1819 23.72% 35.58%

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 0 13 16484 113.78 672 655 139.1
A 13 254 9774 65.55 672 655 139.1
A 1 113 7497 49.18 672 655 139.1
B 0 230 24346 183.12 665 646 129.4
B 5 255 20422 152.8 665 646 129.4
B 0 190 17319 128.83 665 646 129.4
C 14 238 241061 1651.26 617 619 145.6
C 14 254 202375 1385.58 617 619 145.6
C 3 233 20602 137.24 617 619 145.6
D 8 195 5564555 40035.94 572 555 139.0
D 1 52 461251 3314.95 572 555 139.0
D 7 223 305939 2197.4 572 555 139.0

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