ASTROSAT CZTI

Data Quality Report

Orbit 36158

Creation date: 2022-06-06T04:06:34.539189
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_059T08_9000005160_36158cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36158cztM0_level2_quad_clean.evt
Size (bytes)424,684,80089,242,560
Size405.0 MB 85.1 MB
Events in quadrant A2,807,441573,591
Events in quadrant B3,207,269611,553
Events in quadrant C3,121,732585,004
Events in quadrant D3,352,977549,003

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116593
B0128852
C0124282
D0135142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5478150.273823%
B5478701.277839%
C5478490.894487%
D54781322.409639%

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 9244 5480 6 6 0.06% 0.11%
B 9244 5480 38 38 0.41% 0.69%
C 9244 5480 33 33 0.36% 0.60%
D 9244 5479 94 94 1.02% 1.72%

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 173868 1294.2 667 656 133.8
A 9 143 37632 276.28 667 656 133.8
A 13 254 9209 63.91 667 656 133.8
B 5 172 382994 2979.78 675 658 128.3
B 0 246 51493 396.19 675 658 128.3
B 0 190 48496 372.83 675 658 128.3
C 15 214 233082 1515.36 664 672 153.4
C 0 10 134242 870.9 664 672 153.4
C 0 207 106246 688.36 664 672 153.4
D 13 249 219038 1370.33 655 637 159.4
D 12 17 188716 1180.08 655 637 159.4
D 2 250 119263 744.31 655 637 159.4

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