ASTROSAT CZTI

Data Quality Report

Orbit 37040

Creation date: 2024-06-27T21:34:52.506110
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/AS1T05_044T01_9000005270_37040cztM0_level2.evt modeM0/AS1T05_044T01_9000005270_37040cztM0_level2_quad_clean.evt
Size (bytes)464,832,00088,649,280
Size443.3 MB 84.5 MB
Events in quadrant A2,934,416594,910
Events in quadrant B4,028,682577,124
Events in quadrant C3,107,538576,092
Events in quadrant D3,634,530552,335

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121743
B0156782
C0124972
D0144442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5488170.309767%
B54882634.792274%
C5488330.601312%
D5488891.621720%

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 7311 5489 4 4 0.05% 0.07%
B 7311 5489 179 179 2.45% 3.26%
C 7311 5489 30 30 0.41% 0.55%
D 7311 5489 72 72 0.98% 1.31%

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 10 83 276753 2076.72 659 646 133.0
A 11 254 51161 379.94 659 646 133.0
A 13 248 29015 213.38 659 646 133.0
B 5 172 306782 2541.99 637 622 120.4
B 0 190 300673 2491.26 637 622 120.4
B 5 184 266656 2208.83 637 622 120.4
C 15 214 237213 1618.71 630 636 146.2
C 14 254 139454 949.82 630 636 146.2
C 0 10 115731 787.5 630 636 146.2
D 12 235 463359 2984.2 635 617 155.1
D 2 153 194021 1247.25 635 617 155.1
D 2 250 136729 877.78 635 617 155.1

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