ASTROSAT CZTI

Data Quality Report

Orbit 36465

Creation date: 2022-07-11T13:08:20.163254
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_049T02_9000005206_36465cztM0_level2.evt modeM0/AS1A11_049T02_9000005206_36465cztM0_level2_quad_clean.evt
Size (bytes)185,837,76026,484,480
Size177.2 MB 25.3 MB
Events in quadrant A1,248,006160,937
Events in quadrant B1,398,885159,031
Events in quadrant C1,461,545152,484
Events in quadrant D1,350,608152,180

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051992
B056531
C057891
D056011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245470.285249%
B2454301.222494%
C2454923.748981%
D2454130.529747%

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 4577 2455 3 3 0.07% 0.12%
B 4577 2455 18 18 0.39% 0.73%
C 4577 2455 65 65 1.42% 2.65%
D 4577 2455 9 9 0.20% 0.37%

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 97062 1617.14 295 290 59.8
A 13 254 4671 73.21 295 290 59.8
A 3 252 4036 62.6 295 290 59.8
B 5 172 139463 2441.41 290 282 57.0
B 0 189 57008 995.05 290 282 57.0
B 5 255 28849 501.1 290 282 57.0
C 0 10 262210 4011.93 278 279 65.3
C 15 214 105006 1604.07 278 279 65.3
C 0 207 8562 126.87 278 279 65.3
D 2 250 66109 943.76 283 276 69.8
D 10 199 55808 796.09 283 276 69.8
D 13 249 49227 701.74 283 276 69.8

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