ASTROSAT CZTI

Data Quality Report

Orbit 07970

Creation date: 2024-06-27T15:26:12.029637
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/AS1G06_077T01_9000001090_07970cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07970cztM0_level2_quad_clean.evt
Size (bytes)500,817,60085,034,880
Size477.6 MB 81.1 MB
Events in quadrant A3,462,972521,395
Events in quadrant B3,760,536530,544
Events in quadrant C3,686,510528,275
Events in quadrant D3,781,999507,380

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149563
B0158452
C0156322
D0162122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70041331.898915%
B70041632.327242%
C70041181.684752%
D70042313.298115%

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 8860 7005 19 19 0.21% 0.27%
B 8860 7006 25 25 0.28% 0.36%
C 8860 7006 1 1 0.01% 0.01%
D 8860 7005 91 91 1.03% 1.30%

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 0 128 128453 737.39 853 833 173.1
A 0 254 41936 237.49 853 833 173.1
A 0 226 7803 40.27 853 833 173.1
B 5 255 231667 1389.99 858 836 166.1
B 10 16 95136 567.84 858 836 166.1
B 4 239 39966 235.63 858 836 166.1
C 9 68 224877 1154.18 836 840 194.1
C 1 16 165680 849.21 836 840 194.1
C 8 143 25057 124.76 836 840 194.1
D 4 95 274805 1354.67 829 802 202.3
D 1 52 171716 845.0 829 802 202.3
D 2 14 136357 670.19 829 802 202.3

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