ASTROSAT CZTI

Data Quality Report

Orbit 35668

Creation date: 2022-05-04T02:32:04.088834
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/AS1C07_001T07_9000005104_35668cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35668cztM0_level2_quad_clean.evt
Size (bytes)130,947,84030,335,040
Size124.9 MB 28.9 MB
Events in quadrant A844,694204,313
Events in quadrant B812,288213,279
Events in quadrant C979,068207,532
Events in quadrant D1,233,603190,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033941
B032201
C037851
D045641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A137560.436364%
B1375171.236364%
C1375836.036364%
D137515311.127273%

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 1378 1378 0 0 0.00% 0.00%
B 1378 1378 7 7 0.51% 0.51%
C 1378 1378 66 66 4.79% 4.79%
D 1378 1378 133 133 9.65% 9.65%

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 102027 2833.69 172 169 35.9
A 10 83 58932 1634.79 172 169 35.9
A 13 6 14612 401.8 172 169 35.9
B 5 255 59844 1777.17 174 169 33.6
B 5 172 42694 1266.43 174 169 33.6
B 5 200 9617 281.37 174 169 33.6
C 0 10 154104 3789.57 172 173 40.6
C 1 23 62007 1522.27 172 173 40.6
C 15 214 58257 1429.95 172 173 40.6
D 10 234 195899 4784.19 166 162 40.9
D 10 249 91402 2230.08 166 162 40.9
D 2 249 67696 1650.66 166 162 40.9

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