ASTROSAT CZTI

Data Quality Report

Orbit 33664

Creation date: 2024-06-27T20:51:15.059988
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/AS1T04_076T01_9000004810_33664cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33664cztM0_level2_quad_clean.evt
Size (bytes)513,120,96057,504,960
Size489.4 MB 54.8 MB
Events in quadrant A3,989,072319,566
Events in quadrant B3,401,338349,793
Events in quadrant C3,237,386347,635
Events in quadrant D4,527,743327,240

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153533
B0135502
C0126482
D0175602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56674137.287807%
B56671913.370390%
C5667721.270513%
D56672764.870302%

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 7251 5668 351 351 4.84% 6.19%
B 7251 5668 151 151 2.08% 2.66%
C 7251 5668 60 60 0.83% 1.06%
D 7251 5668 244 244 3.37% 4.30%

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 1169986 8827.93 660 647 132.5
A 15 237 244080 1837.8 660 647 132.5
A 9 143 10717 76.02 660 647 132.5
B 5 172 580269 4489.46 672 655 129.1
B 0 219 44465 339.33 672 655 129.1
B 5 255 33394 253.58 672 655 129.1
C 15 214 264416 1694.23 665 671 155.7
C 0 10 222792 1426.85 665 671 155.7
C 3 233 85704 546.23 665 671 155.7
D 8 195 732548 4463.53 653 633 164.0
D 2 249 383665 2335.89 653 633 164.0
D 7 80 227481 1383.42 653 633 164.0

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