ASTROSAT CZTI

Data Quality Report

Orbit 36301

Creation date: 2022-06-15T19:33:56.420283
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_089T02_9000005188_36301cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36301cztM0_level2_quad_clean.evt
Size (bytes)487,486,08089,677,440
Size464.9 MB 85.5 MB
Events in quadrant A2,884,190607,777
Events in quadrant B4,966,458565,879
Events in quadrant C3,106,849586,990
Events in quadrant D3,426,629563,802

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121253
B0183552
C0126562
D0139542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5587260.465366%
B558770212.564883%
C5587691.235010%
D55881412.523264%

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 7290 5588 6 6 0.08% 0.11%
B 7290 5588 582 582 7.98% 10.42%
C 7290 5588 47 47 0.64% 0.84%
D 7291 5589 132 132 1.81% 2.36%

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 194617 1443.73 664 652 134.4
A 15 223 74266 547.92 664 652 134.4
A 9 143 20695 149.18 664 652 134.4
B 5 172 1326538 11087.84 622 606 119.6
B 4 171 415070 3465.87 622 606 119.6
B 5 236 346074 2888.9 622 606 119.6
C 15 214 236740 1606.95 632 636 146.9
C 0 10 189126 1282.88 632 636 146.9
C 0 207 158732 1076.02 632 636 146.9
D 12 6 498298 3151.53 638 618 157.9
D 7 223 108359 682.26 638 618 157.9
D 2 250 90954 572.05 638 618 157.9

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