ASTROSAT CZTI

Data Quality Report

Orbit 08641

Creation date: 2024-06-27T15:35:20.385096
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/AS1G07_024T01_9000001206_08641cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08641cztM0_level2_quad_clean.evt
Size (bytes)412,729,920120,686,400
Size393.6 MB 115.1 MB
Events in quadrant A2,813,012796,124
Events in quadrant B3,465,541826,900
Events in quadrant C2,833,106824,357
Events in quadrant D2,966,924776,144

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127673
B0144902
C0127362
D0133262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6194320.516629%
B61941171.888925%
C619460.096868%
D6194270.435906%

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 7524 6195 22 22 0.29% 0.36%
B 7524 6195 75 75 1.00% 1.21%
C 7524 6195 0 0 0.00% 0.00%
D 7524 6195 21 21 0.28% 0.34%

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 15 174 69285 475.59 711 696 144.2
A 8 5 7625 48.05 711 696 144.2
A 0 226 6789 42.25 711 696 144.2
B 5 143 441024 3252.33 730 713 135.4
B 0 219 108320 794.83 730 713 135.4
B 0 214 33378 241.28 730 713 135.4
C 14 67 44753 270.41 712 714 162.9
C 13 61 5476 29.24 712 714 162.9
C 8 208 4142 21.05 712 714 162.9
D 10 253 116462 691.04 698 679 167.5
D 12 233 116222 689.61 698 679 167.5
D 2 234 23796 137.97 698 679 167.5

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