ASTROSAT CZTI

Data Quality Report

Orbit 14718

Creation date: 2024-06-27T16:58:51.649040
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/AS1A04_048T01_9000002176_14718cztM0_level2.evt modeM0/AS1A04_048T01_9000002176_14718cztM0_level2_quad_clean.evt
Size (bytes)467,087,040112,731,840
Size445.4 MB 107.5 MB
Events in quadrant A3,349,390755,459
Events in quadrant B3,328,194755,674
Events in quadrant C3,826,119733,521
Events in quadrant D3,214,190729,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140443
B0139962
C0157882
D0138122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63031051.665873%
B6303741.174044%
C6303590.936062%
D6303731.158179%

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 7494 6304 25 25 0.33% 0.40%
B 7494 6304 0 0 0.00% 0.00%
C 7494 6304 4 4 0.05% 0.06%
D 7494 6304 7 7 0.09% 0.11%

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 9 143 71394 418.66 836 821 168.6
A 12 189 40436 235.01 836 821 168.6
A 3 1 15753 88.58 836 821 168.6
B 0 205 46454 294.63 825 809 154.9
B 12 111 17216 105.91 825 809 154.9
B 11 111 14770 90.12 825 809 154.9
C 3 233 589846 3214.69 798 802 183.2
C 0 207 114789 622.08 798 802 183.2
C 6 96 8278 40.8 798 802 183.2
D 10 199 53561 266.47 810 789 198.0
D 2 234 24314 118.79 810 789 198.0
D 10 70 22073 107.47 810 789 198.0

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