ASTROSAT CZTI

Data Quality Report

Orbit 30716

Creation date: 2024-06-27T20:18:47.088255
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_071T44_9000004434_30716cztM0_level2.evt modeM0/AS1A10_071T44_9000004434_30716cztM0_level2_quad_clean.evt
Size (bytes)627,065,28075,240,000
Size598.0 MB 71.8 MB
Events in quadrant A4,041,675485,477
Events in quadrant B5,205,785485,716
Events in quadrant C4,369,292445,600
Events in quadrant D4,965,158438,290

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163921
B0191531
C0171341
D0193643

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60551402.312139%
B60561792.955746%
C60563916.456407%
D60551472.427746%

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 7400 6055 31 31 0.42% 0.51%
B 7401 6056 18 18 0.24% 0.30%
C 7401 6056 188 188 2.54% 3.10%
D 7400 6055 95 95 1.28% 1.57%

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 332165 1858.64 906 894 178.2
A 8 192 218272 1219.63 906 894 178.2
A 13 254 11088 57.19 906 894 178.2
B 6 159 1655888 10042.28 890 872 164.8
B 0 229 44457 264.46 890 872 164.8
B 12 111 19180 111.09 890 872 164.8
C 10 22 873483 4580.07 827 837 190.5
C 14 238 138570 722.89 827 837 190.5
C 3 233 97797 508.89 827 837 190.5
D 8 195 1456709 6797.62 845 829 214.2
D 10 253 137540 638.31 845 829 214.2
D 13 249 73806 340.73 845 829 214.2

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