ASTROSAT CZTI

Data Quality Report

Orbit 35532

Creation date: 2022-04-26T10:59:21.971434
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_097T09_9000005086_35532cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35532cztM0_level2_quad_clean.evt
Size (bytes)435,778,56084,142,080
Size415.6 MB 80.2 MB
Events in quadrant A2,674,353551,663
Events in quadrant B2,894,805554,840
Events in quadrant C3,279,006538,978
Events in quadrant D3,969,593511,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116523
B0122312
C0131492
D0154542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5592140.250358%
B5592460.822604%
C5592831.484263%
D55922564.577969%

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 7235 5593 0 0 0.00% 0.00%
B 7235 5593 30 30 0.41% 0.54%
C 7235 5593 45 45 0.62% 0.80%
D 7235 5593 230 230 3.18% 4.11%

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 136549 1022.64 653 638 132.9
A 15 169 9013 63.02 653 638 132.9
A 13 254 7294 50.08 653 638 132.9
B 5 236 319902 2544.31 643 626 125.5
B 5 207 22350 173.12 643 626 125.5
B 5 172 17442 134.01 643 626 125.5
C 0 10 508180 3434.36 633 638 147.8
C 15 214 232650 1569.94 633 638 147.8
C 14 67 31142 206.41 633 638 147.8
D 12 235 910224 5866.38 629 612 155.1
D 2 250 259453 1669.35 629 612 155.1
D 8 195 220693 1419.37 629 612 155.1

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