ASTROSAT CZTI

Data Quality Report

Orbit 03843

Creation date: 2024-06-27T14:34:16.390506
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/AS1G05_189T01_9000000492_03843cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03843cztM0_level2_quad_clean.evt
Size (bytes)321,353,28039,666,240
Size306.5 MB 37.8 MB
Events in quadrant A1,700,268256,204
Events in quadrant B1,463,175256,662
Events in quadrant C4,867,370217,976
Events in quadrant D1,485,852245,047

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073891
B064790
C0166890
D067810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3157240.760215%
B315720.063351%
C315770222.236300%
D3157150.475135%

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 3157 3157 11 11 0.35% 0.35%
B 3157 3157 0 0 0.00% 0.00%
C 3157 3157 513 513 16.25% 16.25%
D 3157 3157 16 16 0.51% 0.51%

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 15 234 316973 4374.06 347 340 72.4
A 0 50 13634 183.65 347 340 72.4
A 8 15 13356 179.81 347 340 72.4
B 15 204 67287 955.77 352 344 70.0
B 14 167 16112 225.13 352 344 70.0
B 4 81 10361 143.02 352 344 70.0
C 2 53 3577731 47344.65 317 318 75.6
C 1 241 38772 508.91 317 318 75.6
C 14 67 5141 63.83 317 318 75.6
D 8 112 45111 502.83 338 329 89.1
D 13 248 38203 425.26 338 329 89.1
D 2 14 32732 363.83 338 329 89.1

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