ASTROSAT CZTI

Data Quality Report

Orbit 20210102_A10_050T06_9000004092_level2

Creation date: 2021-01-06T14:33:26.969941
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_050T06_9000004092cztM0_level2_bc.evt modeM0/AS1A10_050T06_9000004092cztM0_level2_quad_clean.evt
Size (bytes)2,272,248,000645,480,000
Size2.1 GB 615.6 MB
Events in quadrant A11,029,5524,186,170
Events in quadrant B20,179,8974,040,468
Events in quadrant C10,675,8904,025,578
Events in quadrant D23,538,1123,881,264

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01061560
B01488020
C01054020
D01444050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010120
B010120
C010120
D010120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0570
C0570
D0570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497776211.247564%
B49777574311.537457%
C497779141.836189%
D4977729025.830002%

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 54972 49772 8 8 0.01% 0.02%
B 54972 49764 237 237 0.43% 0.48%
C 54973 49769 2 2 0.00% 0.00%
D 54972 49770 560 560 1.02% 1.13%

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 15 174 432408 747.96 2647 2596 574.6
A 12 96 366946 634.04 2647 2596 574.6
A 13 254 69969 117.24 2647 2596 574.6
B 10 245 8754843 18391.66 2510 2446 475.9
B 10 246 1738437 3647.89 2510 2446 475.9
B 0 230 47481 94.63 2510 2446 475.9
C 15 208 285393 467.08 2558 2542 605.6
C 7 247 247891 405.15 2558 2542 605.6
C 3 233 144058 233.69 2558 2542 605.6
D 8 195 6909653 11785.96 2565 2488 586.1
D 1 52 6335232 10805.81 2565 2488 586.1
D 13 104 247013 417.24 2565 2488 586.1

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