ASTROSAT CZTI

Data Quality Report

Orbit 42285

Creation date: 2024-06-27T22:38:44.638873
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/AS1A12_089T08_9000005790_42285cztM0_level2.fits modeM0/AS1A12_089T08_9000005790_42285cztM0_level2_quad_clean.evt
Size (bytes)318,441,60094,645,440
Size303.7 MB 90.3 MB
Events in quadrant A2,954,715651,431
Events in quadrant B2,550,086664,487
Events in quadrant C2,496,109623,818
Events in quadrant D3,391,614571,188

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119115
B01072210
C01050712
D0135514

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01031
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5072140.276025%
B5070150.295858%
C506730.059207%
D50721212.385647%

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 7106 5074 3 3 0.04% 0.06%
B 7106 5073 10 10 0.14% 0.20%
C 7106 5072 1 1 0.01% 0.02%
D 7106 5075 96 96 1.35% 1.89%

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 10 83 571913 4631.13 610 601 123.4
A 13 6 7944 59.52 610 601 123.4
A 2 79 7762 58.05 610 601 123.4
B 5 255 122917 1064.64 600 585 114.9
B 3 112 22534 191.02 600 585 114.9
B 0 229 17447 146.75 600 585 114.9
C 15 214 227719 1686.9 579 584 134.6
C 12 249 6673 45.22 579 584 134.6
C 13 61 3896 24.6 579 584 134.6
D 1 52 515747 3634.35 583 566 141.8
D 5 171 167254 1175.9 583 566 141.8
D 9 19 90583 635.03 583 566 141.8

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