ASTROSAT CZTI

Data Quality Report

Orbit 34305

Creation date: 2022-02-01T00:26:22.510448
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_047T07_9000004892_34305cztM0_level2.evt modeM0/AS1A11_047T07_9000004892_34305cztM0_level2_quad_clean.evt
Size (bytes)472,170,24062,029,440
Size450.3 MB 59.2 MB
Events in quadrant A2,885,660382,289
Events in quadrant B3,466,885381,708
Events in quadrant C3,021,528389,920
Events in quadrant D4,575,715362,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118293
B0137222
C0122132
D0172692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5163300.581058%
B51631262.440442%
C5163350.677900%
D51633065.926787%

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 7166 5164 13 13 0.18% 0.25%
B 7166 5164 72 72 1.00% 1.39%
C 7166 5164 11 11 0.15% 0.21%
D 7166 5164 188 188 2.62% 3.64%

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 7 16 159982 1171.18 684 674 136.0
A 9 143 33970 244.78 684 674 136.0
A 10 83 30248 217.42 684 674 136.0
B 5 172 351992 2755.48 680 667 127.5
B 0 229 135524 1057.7 680 667 127.5
B 4 251 113155 882.25 680 667 127.5
C 15 214 220436 1414.01 678 684 155.4
C 0 10 89895 574.03 678 684 155.4
C 14 254 40851 258.46 678 684 155.4
D 8 195 525558 3204.01 657 644 163.8
D 7 223 379247 2310.94 657 644 163.8
D 1 52 298013 1815.1 657 644 163.8

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