ASTROSAT CZTI

Data Quality Report

Orbit 19775

Creation date: 2024-06-27T18:06:53.584438
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_104T08_9000002954_19775cztM0_level2.evt modeM0/AS1A05_104T08_9000002954_19775cztM0_level2_quad_clean.evt
Size (bytes)578,203,20073,307,520
Size551.4 MB 69.9 MB
Events in quadrant A3,260,616451,567
Events in quadrant B3,385,628459,165
Events in quadrant C6,559,940417,670
Events in quadrant D3,843,732417,301

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139651
B0142301
C0238771
D0159801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6803640.940761%
B68041151.690182%
C6804118117.357437%
D68042073.042328%

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 7568 6804 0 0 0.00% 0.00%
B 7569 6805 17 17 0.22% 0.25%
C 7569 6805 922 922 12.18% 13.55%
D 7569 6805 163 163 2.15% 2.40%

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 6 16 12205 66.63 840 822 170.8
A 0 226 7495 39.06 840 822 170.8
A 13 254 7432 38.69 840 822 170.8
B 7 220 75850 462.06 840 819 162.4
B 12 111 19708 116.32 840 819 162.4
B 11 111 17755 104.3 840 819 162.4
C 3 233 3502237 19718.73 750 753 177.6
C 14 238 115558 646.53 750 753 177.6
C 7 247 14701 78.55 750 753 177.6
D 7 238 470381 2379.48 802 778 197.4
D 12 218 155692 784.95 802 778 197.4
D 1 52 109783 552.33 802 778 197.4

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