ASTROSAT CZTI

Data Quality Report

Orbit 20190129_A06_003T04_9000002682_level2

Creation date: 2025-11-26T21:31:00.765868
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/AS1A06_003T04_9000002682cztM0_level2.fits modeM0/AS1A06_003T04_9000002682cztM0_level2_quad_clean.evt
Size (bytes)1,225,474,5601,059,975,360
Size1.1 GB 1010.9 MB
Events in quadrant A7,530,7846,067,123
Events in quadrant B7,321,2546,303,008
Events in quadrant C7,323,5025,881,600
Events in quadrant D6,319,0585,235,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025620
B025620
C025620
D025620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02889450
B02686350
C02637900
D03339620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12569089407.112738%
B12569017301.376402%
C12569019611.560188%
D12569071465.685417%

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 146039 125677 0 0 0.00% 0.00%
B 146039 125676 0 0 0.00% 0.00%
C 146039 125686 0 0 0.00% 0.00%
D 146039 125646 0 0 0.00% 0.00%

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 29 7147 11.01 1961 1836 482.5
A 7 110 5985 8.6 1961 1836 482.5
A 0 30 5669 7.94 1961 1836 482.5
B 2 9 5914 10.72 1933 1848 379.2
B 3 17 4996 8.3 1933 1848 379.2
B 2 8 4930 8.13 1933 1848 379.2
C 1 80 5628 7.72 1935 1805 495.3
C 1 81 5619 7.7 1935 1805 495.3
C 12 241 5099 6.65 1935 1805 495.3
D 10 190 4819 6.68 1807 1646 475.0
D 3 14 4671 6.37 1807 1646 475.0
D 6 231 4621 6.26 1807 1646 475.0

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