ASTROSAT CZTI

Data Quality Report

Orbit 25883

Creation date: 2024-06-27T19:22:27.015085
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/AS1A07_068T01_9000003756_25883cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25883cztM0_level2_quad_clean.evt
Size (bytes)581,532,48091,768,320
Size554.6 MB 87.5 MB
Events in quadrant A5,850,029559,630
Events in quadrant B3,192,672625,724
Events in quadrant C3,724,313574,809
Events in quadrant D4,410,157571,087

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214050
B0135110
C0152170
D0173750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6411113917.766339%
B6411360.561535%
C64112333.634378%
D64112013.135236%

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 7506 6412 871 871 11.60% 13.58%
B 7506 6412 1 1 0.01% 0.02%
C 7506 6412 92 92 1.23% 1.43%
D 7506 6412 139 139 1.85% 2.17%

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 2909768 19089.46 760 745 152.4
A 13 254 9919 60.2 760 745 152.4
A 3 137 7043 41.33 760 745 152.4
B 0 219 22536 140.56 802 781 154.8
B 12 111 18167 112.33 802 781 154.8
B 11 111 16577 102.06 802 781 154.8
C 3 233 638111 3624.38 753 754 175.9
C 14 238 121371 685.9 753 754 175.9
C 7 238 18494 100.88 753 754 175.9
D 1 52 1261455 6865.89 764 745 183.6
D 5 223 167618 908.8 764 745 183.6
D 12 2 55044 295.71 764 745 183.6

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