ASTROSAT CZTI

Data Quality Report

Orbit 18705

Creation date: 2024-06-27T17:53:45.334491
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/AS1A05_165T07_9000002796_18705cztM0_level2.evt modeM0/AS1A05_165T07_9000002796_18705cztM0_level2_quad_clean.evt
Size (bytes)630,383,040100,667,520
Size601.2 MB 96.0 MB
Events in quadrant A4,056,446636,391
Events in quadrant B4,478,984644,990
Events in quadrant C6,401,169619,070
Events in quadrant D3,634,638614,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170932
B0182133
C0243332
D0162932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76801161.510417%
B76791471.914312%
C76793264.245344%
D7679260.338586%

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 8775 7682 69 69 0.79% 0.90%
B 8774 7681 19 19 0.22% 0.25%
C 8774 7681 46 46 0.52% 0.60%
D 8774 7681 6 6 0.07% 0.08%

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 409928 2150.73 938 915 190.2
A 6 16 14075 69.2 938 915 190.2
A 13 254 11408 55.17 938 915 190.2
B 10 245 655042 3643.13 939 916 179.6
B 0 197 56795 311.21 939 916 179.6
B 3 64 46922 256.23 939 916 179.6
C 3 233 2615555 12408.98 896 903 210.7
C 0 207 154386 728.42 896 903 210.7
C 14 238 138389 652.5 896 903 210.7
D 7 238 72185 316.73 914 887 225.1
D 1 52 66634 292.07 914 887 225.1
D 2 234 34461 149.15 914 887 225.1

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