ASTROSAT CZTI

Data Quality Report

Orbit 02838

Creation date: 2024-06-27T14:22:17.288676
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/AS1P01_999T99_9000000410_02838cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02838cztM0_level2_quad_clean.evt
Size (bytes)692,867,52039,556,800
Size660.8 MB 37.7 MB
Events in quadrant A2,191,669230,400
Events in quadrant B3,066,878234,756
Events in quadrant C6,384,833205,429
Events in quadrant D9,006,018179,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102573
B0124542
C0223452
D0301292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4947290.586214%
B4947621.253285%
C4947148630.038407%
D4947286357.873459%

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 7103 4948 14 14 0.20% 0.28%
B 7103 4948 45 45 0.63% 0.91%
C 7103 4948 1096 1096 15.43% 22.15%
D 7103 4947 2321 2321 32.68% 46.92%

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 0 31 48022 450.59 522 511 105.4
A 0 149 32068 299.28 522 511 105.4
A 0 226 30095 280.57 522 511 105.4
B 0 173 514047 4979.55 535 524 103.1
B 0 191 171167 1654.7 535 524 103.1
B 0 219 105948 1022.28 535 524 103.1
C 0 64 3424595 32429.56 456 459 105.6
C 0 219 675606 6394.23 456 459 105.6
C 1 16 217541 2055.96 456 459 105.6
D 0 226 3533180 39930.74 353 346 88.5
D 1 4 2238417 25296.36 353 346 88.5
D 1 66 1674013 18917.04 353 346 88.5

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
Veto Counter