ASTROSAT CZTI

Data Quality Report

Orbit 36285

Creation date: 2022-06-14T19:18:51.676232
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_071T33_9000005186_36285cztM0_level2.evt modeM0/AS1A10_071T33_9000005186_36285cztM0_level2_quad_clean.evt
Size (bytes)257,184,00033,393,600
Size245.3 MB 31.8 MB
Events in quadrant A1,422,707216,029
Events in quadrant B2,610,991180,900
Events in quadrant C1,511,088212,805
Events in quadrant D2,052,390200,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060022
B095691
C060961
D079081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2798100.357398%
B279852318.691923%
C2798180.643317%
D27981124.002859%

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 4440 2799 5 5 0.11% 0.18%
B 4440 2799 360 360 8.11% 12.86%
C 4440 2799 15 15 0.34% 0.54%
D 4440 2799 107 107 2.41% 3.82%

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 10 83 92321 1341.6 335 328 68.6
A 9 143 27077 390.1 335 328 68.6
A 13 6 6260 86.51 335 328 68.6
B 4 171 997834 16712.02 299 290 59.7
B 8 128 193499 3236.86 299 290 59.7
B 5 172 150992 2524.74 299 290 59.7
C 15 214 117425 1509.2 325 327 77.6
C 0 10 97093 1247.16 325 327 77.6
C 0 207 23522 298.95 325 327 77.6
D 12 6 351866 4432.57 320 312 79.3
D 13 171 261013 3287.05 320 312 79.3
D 13 249 67053 841.5 320 312 79.3

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