ASTROSAT CZTI

Data Quality Report

Orbit 33819

Creation date: 2024-06-27T20:53:03.484207
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_106T03_9000004826_33819cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33819cztM0_level2_quad_clean.evt
Size (bytes)594,875,52083,960,640
Size567.3 MB 80.1 MB
Events in quadrant A4,026,236532,404
Events in quadrant B4,117,818524,184
Events in quadrant C3,828,122531,163
Events in quadrant D5,610,647508,270

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164913
B0166072
C0153782
D0212472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63974176.518681%
B63973004.689698%
C63971221.907144%
D63972493.892450%

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 9262 6399 247 247 2.67% 3.86%
B 9262 6399 202 202 2.18% 3.16%
C 9262 6399 107 107 1.16% 1.67%
D 9262 6399 197 197 2.13% 3.08%

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 1185679 8074.95 728 713 146.7
A 13 6 17079 111.53 728 713 146.7
A 13 254 11318 72.27 728 713 146.7
B 5 172 938079 6776.23 726 710 138.3
B 0 189 71995 515.32 726 710 138.3
B 4 232 38921 276.23 726 710 138.3
C 14 254 312761 1879.68 716 722 166.0
C 15 214 275214 1653.5 716 722 166.0
C 3 233 175102 1050.44 716 722 166.0
D 8 195 1599418 8711.77 710 691 183.5
D 2 250 553063 3009.98 710 691 183.5
D 12 235 281100 1528.0 710 691 183.5

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