ASTROSAT CZTI

Data Quality Report

Orbit 36494

Creation date: 2022-06-28T21:05:30.056784
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_049T04_9000005210_36494cztM0_level2.evt modeM0/AS1A11_049T04_9000005210_36494cztM0_level2_quad_clean.evt
Size (bytes)227,698,56043,781,760
Size217.2 MB 41.8 MB
Events in quadrant A1,137,115310,409
Events in quadrant B1,314,029303,336
Events in quadrant C1,226,573294,843
Events in quadrant D3,071,356262,031

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113989033983466446
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046741
B052851
C049391
D0106411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A214040.186916%
B2140592.757009%
C2140401.869159%
D214039018.224299%

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 2140 2140 0 0 0.00% 0.00%
B 2140 2140 42 42 1.96% 1.96%
C 2140 2140 29 29 1.36% 1.36%
D 2140 2140 480 480 22.43% 22.43%

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 94194 1694.87 267 262 55.4
A 13 254 3701 62.05 267 262 55.4
A 12 189 2797 45.74 267 262 55.4
B 5 172 229517 4624.77 254 249 49.6
B 15 85 25830 516.02 254 249 49.6
B 5 255 25153 502.36 254 249 49.6
C 0 10 167617 2873.56 247 249 58.2
C 15 214 94303 1614.83 247 249 58.2
C 13 61 1699 24.9 247 249 58.2
D 12 235 1120426 18839.43 243 236 59.5
D 12 227 784955 13197.46 243 236 59.5
D 13 171 86568 1451.94 243 236 59.5

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