ASTROSAT CZTI

Data Quality Report

Orbit 31768

Creation date: 2024-06-27T20:32:29.746695
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_109T01_9000004638_31768cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31768cztM0_level2_quad_clean.evt
Size (bytes)275,699,52038,177,280
Size262.9 MB 36.4 MB
Events in quadrant A1,618,096240,690
Events in quadrant B2,518,539236,658
Events in quadrant C2,165,401232,313
Events in quadrant D1,840,248229,852

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066371
B094531
C086511
D075384

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3030752.475248%
B30301193.927393%
C30301685.544554%
D3029632.079894%

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 4015 3031 0 0 0.00% 0.00%
B 4015 3031 5 5 0.12% 0.16%
C 4015 3031 21 21 0.52% 0.69%
D 4015 3031 6 6 0.15% 0.20%

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 5530 60.94 419 412 84.0
A 3 137 4206 45.18 419 412 84.0
A 0 226 3520 37.01 419 412 84.0
B 6 159 777307 9795.07 409 400 79.3
B 10 245 75326 944.65 409 400 79.3
B 10 247 21151 261.62 409 400 79.3
C 0 10 392397 4220.02 388 391 92.9
C 3 233 165920 1781.95 388 391 92.9
C 14 238 62989 673.88 388 391 92.9
D 8 195 225172 2342.34 400 390 96.0
D 12 227 39832 411.01 400 390 96.0
D 1 52 24218 248.3 400 390 96.0

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