ASTROSAT CZTI

Data Quality Report

Orbit 10868

Creation date: 2024-06-27T16:04:55.318990
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/AS1A03_118T01_9000001570_10868cztM0_level2.evt modeM0/AS1A03_118T01_9000001570_10868cztM0_level2_quad_clean.evt
Size (bytes)516,735,360105,261,120
Size492.8 MB 100.4 MB
Events in quadrant A4,544,628688,544
Events in quadrant B4,056,825706,511
Events in quadrant C2,874,190711,392
Events in quadrant D3,761,990657,348

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176552
B0160511
C0126141
D0152381

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60753826.288066%
B60752604.279835%
C6075490.806584%
D60753265.366255%

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 7260 6075 196 196 2.70% 3.23%
B 7260 6075 127 127 1.75% 2.09%
C 7260 6076 1 1 0.01% 0.02%
D 7260 6076 129 129 1.78% 2.12%

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 8 5 1457096 9688.89 740 725 150.3
A 15 223 143552 950.19 740 725 150.3
A 15 239 60076 394.84 740 725 150.3
B 4 239 1022000 7248.35 747 731 140.9
B 0 219 46166 322.47 747 731 140.9
B 15 204 25588 176.42 747 731 140.9
C 14 67 10381 57.32 732 736 168.3
C 13 61 5381 27.6 732 736 168.3
C 8 208 4074 19.84 732 736 168.3
D 1 52 466152 2709.31 718 699 171.8
D 13 249 147674 855.51 718 699 171.8
D 2 14 111702 646.13 718 699 171.8

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