ASTROSAT CZTI

Data Quality Report

Orbit 31979

Creation date: 2024-06-27T20:35:01.823102
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/AS1C06_010T03_9000004672_31979cztM0_level2.evt modeM0/AS1C06_010T03_9000004672_31979cztM0_level2_quad_clean.evt
Size (bytes)216,872,64038,390,400
Size206.8 MB 36.6 MB
Events in quadrant A946,270274,755
Events in quadrant B2,582,930248,751
Events in quadrant C1,204,191249,343
Events in quadrant D1,693,424240,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041110
B090840
C048450
D064040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204630.146628%
B204637018.084066%
C2046643.128055%
D20461949.481916%

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 2046 2046 0 0 0.00% 0.00%
B 2045 2045 313 313 15.31% 15.31%
C 2046 2046 39 39 1.91% 1.91%
D 2046 2046 156 156 7.62% 7.62%

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 14 238 16719 332.95 239 234 49.5
A 13 254 4045 76.97 239 234 49.5
A 13 6 3243 60.77 239 234 49.5
B 10 245 953659 21870.98 221 216 43.6
B 6 159 561328 12871.32 221 216 43.6
B 0 213 94680 2166.9 221 216 43.6
C 0 10 223206 4089.36 227 227 54.5
C 14 238 41519 757.28 227 227 54.5
C 3 233 29547 537.72 227 227 54.5
D 13 249 336073 6075.1 225 219 55.3
D 8 195 175458 3169.81 225 219 55.3
D 12 233 150769 2723.23 225 219 55.3

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