ASTROSAT CZTI

Data Quality Report

Orbit 38796

Creation date: 2024-06-27T21:56:31.743782
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/AS1A12_044T04_9000005396_38796cztM0_level2.fits modeM0/AS1A12_044T04_9000005396_38796cztM0_level2_quad_clean.evt
Size (bytes)421,649,28087,419,520
Size402.1 MB 83.4 MB
Events in quadrant A2,951,702619,996
Events in quadrant B2,591,599645,548
Events in quadrant C2,570,658608,735
Events in quadrant D7,099,392417,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117663
B0108862
C0104242
D0246522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5074150.295625%
B5074350.689791%
C507490.177375%
D5074141627.906977%

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 7196 5075 5 5 0.07% 0.10%
B 7196 5075 19 19 0.26% 0.37%
C 7196 5075 6 6 0.08% 0.12%
D 7196 5075 1297 1297 18.02% 25.56%

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 391527 3322.8 587 576 117.7
A 12 16 231214 1960.26 587 576 117.7
A 12 194 36080 301.76 587 576 117.7
B 4 171 193214 1691.79 591 575 113.9
B 0 230 21006 179.43 591 575 113.9
B 5 200 15563 131.63 591 575 113.9
C 15 214 224913 1646.02 584 588 136.3
C 0 10 30611 220.3 584 588 136.3
C 14 254 23774 170.13 584 588 136.3
D 12 235 3402367 27675.86 506 492 122.9
D 12 227 619199 5033.47 506 492 122.9
D 10 118 536588 4361.39 506 492 122.9

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