ASTROSAT CZTI

Data Quality Report

Orbit 03951

Creation date: 2024-06-27T14:35:37.020562
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_246T02_9000000504_03951cztM0_level2.evt modeM0/AS1G05_246T02_9000000504_03951cztM0_level2_quad_clean.evt
Size (bytes)496,221,12070,594,560
Size473.2 MB 67.3 MB
Events in quadrant A3,668,944431,734
Events in quadrant B3,427,915442,609
Events in quadrant C2,995,894432,807
Events in quadrant D4,504,781387,538

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149343
B0141282
C0131432
D0178582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63451552.442868%
B6345731.150512%
C6345370.583136%
D63454827.596533%

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 8935 6347 68 68 0.76% 1.07%
B 8935 6347 9 9 0.10% 0.14%
C 8935 6347 2 2 0.02% 0.03%
D 8935 6347 382 382 4.28% 6.02%

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 0 199 328199 2072.25 772 756 158.0
A 0 118 152302 959.07 772 756 158.0
A 8 15 88841 557.45 772 756 158.0
B 3 0 124894 821.21 792 775 151.1
B 15 204 120892 794.73 792 775 151.1
B 4 81 42743 277.67 792 775 151.1
C 10 65 30035 167.16 753 757 175.1
C 1 16 22955 126.74 753 757 175.1
C 13 61 6422 32.34 753 757 175.1
D 2 232 1365011 7860.13 719 698 173.6
D 12 233 147963 848.43 719 698 173.6
D 13 239 48179 273.55 719 698 173.6

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