ASTROSAT CZTI

Data Quality Report

Orbit 34672

Creation date: 2022-02-25T22:18:22.334395
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_065T06_9000004958_34672cztM0_level2.evt modeM0/AS1A11_065T06_9000004958_34672cztM0_level2_quad_clean.evt
Size (bytes)335,139,84059,342,400
Size319.6 MB 56.6 MB
Events in quadrant A2,010,032403,832
Events in quadrant B1,910,891412,941
Events in quadrant C1,749,896400,649
Events in quadrant D4,260,328351,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081291
B077621
C070641
D0149401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3212170.529265%
B3212541.681196%
C3212511.587796%
D321257017.745953%

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 3212 3212 4 4 0.12% 0.12%
B 3212 3212 30 30 0.93% 0.93%
C 3212 3212 35 35 1.09% 1.09%
D 3212 3212 650 650 20.24% 20.24%

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 15 169 539541 7109.37 368 360 75.8
A 10 83 21594 279.98 368 360 75.8
A 7 48 12711 162.85 368 360 75.8
B 5 255 172178 2429.37 363 354 70.7
B 5 172 94409 1329.82 363 354 70.7
B 0 190 92126 1297.54 363 354 70.7
C 0 10 156241 1880.84 354 356 82.9
C 15 214 138216 1663.36 354 356 82.9
C 14 67 54930 658.46 354 356 82.9
D 8 195 1563525 17430.33 339 331 89.7
D 7 38 830755 9259.61 339 331 89.7
D 13 249 173849 1934.81 339 331 89.7

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