ASTROSAT CZTI

Data Quality Report

Orbit 34321

Creation date: 2022-02-04T10:51:38.774960
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/AS1A05_082T08_9000004900_34321cztM0_level2.evt modeM0/AS1A05_082T08_9000004900_34321cztM0_level2_quad_clean.evt
Size (bytes)211,538,88040,389,120
Size201.7 MB 38.5 MB
Events in quadrant A1,115,417267,482
Events in quadrant B1,255,554277,696
Events in quadrant C1,338,596273,070
Events in quadrant D2,547,998247,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045482
B050471
C052701
D090901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A217240.184162%
B2172231.058932%
C2172231.058932%
D21721808.287293%

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 4264 2173 0 0 0.00% 0.00%
B 4264 2173 11 11 0.26% 0.51%
C 4264 2173 17 17 0.40% 0.78%
D 4264 2173 170 170 3.99% 7.82%

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 13946 233.17 284 279 58.6
A 13 254 3448 54.07 284 279 58.6
A 13 6 3030 46.93 284 279 58.6
B 5 172 76873 1361.81 284 278 56.2
B 4 232 19654 344.49 284 278 56.2
B 4 251 16344 285.64 284 278 56.2
C 15 214 91867 1387.42 280 283 66.0
C 0 10 67176 1013.37 280 283 66.0
C 14 254 61763 931.37 280 283 66.0
D 8 195 485438 6784.58 273 267 71.5
D 12 227 444631 6213.94 273 267 71.5
D 12 235 213422 2980.74 273 267 71.5

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