ASTROSAT CZTI

Data Quality Report

Orbit 31580

Creation date: 2024-06-27T20:30:12.394012
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_094T72_9000004604_31580cztM0_level2.evt modeM0/AS1A10_094T72_9000004604_31580cztM0_level2_quad_clean.evt
Size (bytes)356,777,28074,162,880
Size340.2 MB 70.7 MB
Events in quadrant A1,839,961523,818
Events in quadrant B3,362,593500,818
Events in quadrant C1,987,520508,271
Events in quadrant D3,359,337447,215

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078841
B0126601
C082331
D0125681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3752190.506397%
B37522546.769723%
C3752591.572495%
D375251113.619403%

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 4817 3752 0 0 0.00% 0.00%
B 4817 3752 169 169 3.51% 4.50%
C 4817 3752 9 9 0.19% 0.24%
D 4817 3752 443 443 9.20% 11.81%

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 13 254 6927 67.05 477 467 96.3
A 3 137 4688 43.81 477 467 96.3
A 0 226 3961 36.27 477 467 96.3
B 6 159 1058036 12163.21 452 441 87.0
B 5 172 388172 4459.23 452 441 87.0
B 4 80 74917 856.54 452 441 87.0
C 14 238 75579 699.05 458 460 107.5
C 3 233 45526 419.38 458 460 107.5
C 15 208 36066 331.35 458 460 107.5
D 12 218 1111764 11040.09 422 412 100.7
D 8 195 411623 4084.94 422 412 100.7
D 13 249 78838 779.08 422 412 100.7

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