ASTROSAT CZTI

Data Quality Report

Orbit 33421

Creation date: 2024-06-27T20:48:39.295550
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/AS1A11_046T04_9000004792_33421cztM0_level2.evt modeM0/AS1A11_046T04_9000004792_33421cztM0_level2_quad_clean.evt
Size (bytes)472,622,400101,111,040
Size450.7 MB 96.4 MB
Events in quadrant A2,807,215687,487
Events in quadrant B4,097,140669,502
Events in quadrant C3,173,192679,158
Events in quadrant D3,864,841643,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114793
B0158422
C0127332
D0151272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5462100.183083%
B546256910.417430%
C5462991.812523%
D54621683.075796%

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 7315 5463 0 0 0.00% 0.00%
B 7315 5463 449 449 6.14% 8.22%
C 7315 5463 91 91 1.24% 1.67%
D 7315 5463 164 164 2.24% 3.00%

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 47 354444 2834.19 630 619 124.8
A 13 254 9640 72.26 630 619 124.8
A 15 174 7579 55.75 630 619 124.8
B 5 172 1469396 12849.23 604 589 114.3
B 5 255 86227 749.17 604 589 114.3
B 0 189 38343 330.27 604 589 114.3
C 15 214 234877 1682.9 609 614 139.2
C 3 233 198763 1423.46 609 614 139.2
C 14 254 161633 1156.73 609 614 139.2
D 8 195 580669 4013.75 599 583 144.5
D 13 249 350438 2420.73 599 583 144.5
D 2 250 280728 1938.39 599 583 144.5

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter