ASTROSAT CZTI

Data Quality Report

Orbit 35489

Creation date: 2024-06-27T21:14:11.311857
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/AS1A11_097T22_9000005082_35489cztM0_level2.evt modeM0/AS1A11_097T22_9000005082_35489cztM0_level2_quad_clean.evt
Size (bytes)520,796,16098,772,480
Size496.7 MB 94.2 MB
Events in quadrant A3,257,444642,081
Events in quadrant B5,508,416635,235
Events in quadrant C3,518,582673,993
Events in quadrant D3,096,347636,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135033
B0203172
C0140812
D0131672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57801873.235294%
B578073912.785467%
C5780921.591696%
D57801081.868512%

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 9064 5782 164 164 1.81% 2.84%
B 9064 5782 481 481 5.31% 8.32%
C 9064 5782 52 52 0.57% 0.90%
D 9064 5782 87 87 0.96% 1.50%

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 15 169 531438 3974.06 664 652 133.6
A 10 83 138915 1035.19 664 652 133.6
A 9 143 16402 117.92 664 652 133.6
B 4 171 1425150 11725.6 640 624 121.5
B 5 236 935668 7696.56 640 624 121.5
B 5 172 353710 2906.33 640 624 121.5
C 0 10 325681 2108.04 664 670 154.2
C 15 214 236435 1529.18 664 670 154.2
C 4 254 139876 902.9 664 670 154.2
D 13 249 204324 1290.32 657 639 157.9
D 10 118 74967 470.86 657 639 157.9
D 12 6 62183 389.87 657 639 157.9

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