ASTROSAT CZTI

Data Quality Report

Orbit 40669

Creation date: 2024-06-27T22:18:56.798933
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_029T02_9000005558_40669cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40669cztM0_level2_quad_clean.evt
Size (bytes)470,508,48090,334,080
Size448.7 MB 86.1 MB
Events in quadrant A3,214,111652,792
Events in quadrant B3,567,556652,403
Events in quadrant C6,146,620575,685
Events in quadrant D4,019,515433,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131123
B0146622
C0224482
D0163362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6020150.249169%
B60202193.637874%
C60206019.983389%
D6020167427.807309%

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 7304 6021 4 4 0.05% 0.07%
B 7304 6021 150 150 2.05% 2.49%
C 7304 6021 590 590 8.08% 9.80%
D 7304 6021 330 330 4.52% 5.48%

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 535599 3864.44 669 655 138.4
A 12 189 45622 324.84 669 655 138.4
A 2 79 15783 109.28 669 655 138.4
B 0 229 519196 4062.12 653 634 127.7
B 5 255 316765 2476.39 653 634 127.7
B 0 230 51206 396.15 653 634 127.7
C 9 187 3286881 22412.71 621 621 146.6
C 15 214 251372 1710.15 621 621 146.6
C 14 254 121051 821.35 621 621 146.6
D 12 128 939399 7179.21 522 507 130.8
D 12 227 329789 2517.85 522 507 130.8
D 12 191 299093 2283.13 522 507 130.8

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