ASTROSAT CZTI

Data Quality Report

Orbit 30985

Creation date: 2024-06-27T20:21:55.795874
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/AS1A10_071T42_9000004476_30985cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30985cztM0_level2_quad_clean.evt
Size (bytes)1,507,152,960243,158,400
Size1.4 GB 231.9 MB
Events in quadrant A8,984,4781,557,378
Events in quadrant B14,703,1791,548,206
Events in quadrant C10,494,0441,488,248
Events in quadrant D10,191,1011,472,425

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388074
B0576805
C0428694
D0414814

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188524162.206662%
B188516873.644369%
C188527183.808614%
D188524142.196053%

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 20827 18852 0 0 0.00% 0.00%
B 20826 18851 42 42 0.20% 0.22%
C 20827 18852 67 67 0.32% 0.36%
D 20827 18852 74 74 0.36% 0.39%

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 13 254 33121 66.1 2325 2277 466.6
A 3 137 23980 46.51 2325 2277 466.6
A 0 226 19770 37.49 2325 2277 466.6
B 6 159 5177121 11701.69 2286 2226 442.2
B 0 190 122856 272.77 2286 2226 442.2
B 5 172 112437 249.21 2286 2226 442.2
C 0 10 1195289 2272.98 2219 2230 524.9
C 14 238 352617 667.55 2219 2230 524.9
C 14 67 132152 247.52 2219 2230 524.9
D 8 195 1052401 1955.72 2256 2193 537.0
D 2 250 239502 441.92 2256 2193 537.0
D 7 238 137553 252.07 2256 2193 537.0

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