ASTROSAT CZTI

Data Quality Report

Orbit 19004

Creation date: 2024-06-27T17:57:57.836422
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_003T05_9000002830_19004cztM0_level2.evt modeM0/AS1A06_003T05_9000002830_19004cztM0_level2_quad_clean.evt
Size (bytes)681,707,52082,552,320
Size650.1 MB 78.7 MB
Events in quadrant A7,089,825510,627
Events in quadrant B3,324,539563,716
Events in quadrant C3,239,257524,402
Events in quadrant D6,570,854465,740

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252322
B0136052
C0132822
D0237872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226151224.285255%
B6226631.011886%
C6226691.108256%
D622678912.672663%

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 7541 6227 1096 1096 14.53% 17.60%
B 7541 6227 2 2 0.03% 0.03%
C 7541 6227 0 0 0.00% 0.00%
D 7541 6227 640 640 8.49% 10.28%

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 14 235 4282226 29808.99 728 717 143.6
A 8 144 6692 41.6 728 717 143.6
A 0 226 6336 39.12 728 717 143.6
B 7 220 41998 266.05 825 808 154.8
B 12 111 17762 109.51 825 808 154.8
B 3 112 17067 105.02 825 808 154.8
C 14 238 123319 673.3 783 792 182.0
C 3 233 59365 321.86 783 792 182.0
C 13 61 5517 25.96 783 792 182.0
D 7 238 2975402 16600.48 741 721 179.2
D 1 52 665706 3711.01 741 721 179.2
D 7 96 61808 340.9 741 721 179.2

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