ASTROSAT CZTI

Data Quality Report

Orbit 04574

Creation date: 2024-06-27T14:43:58.205611
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/AS1G05_233T10_9000000570_04574cztM0_level2.evt modeM0/AS1G05_233T10_9000000570_04574cztM0_level2_quad_clean.evt
Size (bytes)451,088,64063,501,120
Size430.2 MB 60.6 MB
Events in quadrant A3,349,303373,591
Events in quadrant B3,258,524378,609
Events in quadrant C3,069,519372,865
Events in quadrant D3,546,131348,212

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142073
B0137962
C0135322
D0151382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64411231.909641%
B6441721.117839%
C6441500.776277%
D64412323.601925%

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 7791 6442 42 42 0.54% 0.65%
B 7791 6442 0 0 0.00% 0.00%
C 7791 6442 9 9 0.12% 0.14%
D 7791 6442 179 179 2.30% 2.78%

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 288967 1851.01 774 758 155.7
A 0 50 69637 442.37 774 758 155.7
A 0 226 7811 45.3 774 758 155.7
B 12 18 74456 498.69 788 770 147.8
B 14 167 50373 335.7 788 770 147.8
B 15 54 17962 116.35 788 770 147.8
C 14 48 111618 639.97 753 756 173.2
C 14 67 10853 58.28 753 756 173.2
C 13 61 6274 31.85 753 756 173.2
D 13 235 288357 1632.98 730 708 176.1
D 10 15 285050 1614.2 730 708 176.1
D 2 136 69739 391.89 730 708 176.1

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