ASTROSAT CZTI

Data Quality Report

Orbit 39144

Creation date: 2024-06-27T22:00:57.632640
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_044T16_9000005442_39144cztM0_level2.fits modeM0/AS1A12_044T16_9000005442_39144cztM0_level2_quad_clean.evt
Size (bytes)215,832,96055,056,960
Size205.8 MB 52.5 MB
Events in quadrant A1,627,353380,578
Events in quadrant B1,408,909384,313
Events in quadrant C1,455,267362,071
Events in quadrant D3,264,187327,713

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066181
B061441
C061871
D0118701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2984110.368633%
B298450.167560%
C298430.100536%
D29841595.328418%

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 5107 2985 2 2 0.04% 0.07%
B 5107 2985 3 3 0.06% 0.10%
C 5107 2985 1 1 0.02% 0.03%
D 5107 2985 244 244 4.78% 8.17%

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 209709 2950.05 352 347 71.0
A 15 223 44840 626.94 352 347 71.0
A 9 143 10850 147.99 352 347 71.0
B 5 172 40535 590.76 346 337 68.0
B 12 111 8222 115.88 346 337 68.0
B 11 111 7766 109.18 346 337 68.0
C 15 214 125921 1606.25 332 335 78.2
C 9 187 20457 257.36 332 335 78.2
C 0 239 9150 112.74 332 335 78.2
D 12 235 1787829 22186.06 330 321 80.6
D 5 222 86426 1068.71 330 321 80.6
D 2 250 79325 980.58 330 321 80.6

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