ASTROSAT CZTI

Data Quality Report

Orbit 35886

Creation date: 2022-06-08T22:01:55.664347
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_080T01_9000005146_35886cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35886cztM0_level2_quad_clean.evt
Size (bytes)526,507,20056,934,720
Size502.1 MB 54.3 MB
Events in quadrant A2,757,691370,227
Events in quadrant B5,608,787296,851
Events in quadrant C2,965,558359,617
Events in quadrant D4,268,222339,725

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109563
B0199382
C0115172
D0162762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5093120.235618%
B5093116622.894168%
C5093661.295896%
D50932735.360298%

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 7216 5094 1 1 0.01% 0.02%
B 7216 5094 1038 1038 14.38% 20.38%
C 7216 5094 53 53 0.73% 1.04%
D 7216 5094 243 243 3.37% 4.77%

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 164175 1230.7 660 651 132.9
A 15 169 19803 144.14 660 651 132.9
A 13 6 13002 92.96 660 651 132.9
B 5 63 2819035 25938.12 573 560 108.7
B 5 172 349231 3208.78 573 560 108.7
B 5 255 67868 619.42 573 560 108.7
C 0 10 219233 1510.16 627 633 144.8
C 15 214 213730 1472.14 627 633 144.8
C 0 207 45733 311.57 627 633 144.8
D 12 227 392486 2538.25 626 611 154.4
D 2 249 357346 2310.64 626 611 154.4
D 8 195 346959 2243.36 626 611 154.4

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