ASTROSAT CZTI

Data Quality Report

Orbit 11496

Creation date: 2024-06-27T16:13:48.306160
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/AS1A04_021T05_9000001686_11496cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11496cztM0_level2_quad_clean.evt
Size (bytes)548,516,16062,994,240
Size523.1 MB 60.1 MB
Events in quadrant A5,439,176346,946
Events in quadrant B5,293,506376,933
Events in quadrant C2,433,254420,893
Events in quadrant D3,084,776389,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199242
B0193241
C0109981
D0127261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A532895717.961712%
B5328106720.026276%
C5328140.262763%
D53281132.120871%

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 5689 5330 518 518 9.11% 9.72%
B 5689 5330 716 716 12.59% 13.43%
C 5689 5330 0 0 0.00% 0.00%
D 5689 5330 56 56 0.98% 1.05%

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 8 5 3035724 25171.51 582 569 120.6
A 1 162 34368 280.3 582 569 120.6
A 9 143 28223 229.34 582 569 120.6
B 4 81 2056378 17949.05 592 577 114.5
B 4 239 717072 6255.67 592 577 114.5
B 11 51 145973 1269.44 592 577 114.5
C 13 61 4591 27.03 624 628 146.6
C 3 202 1473 5.76 624 628 146.6
C -1 -1 -1 -1.0 624 628 146.6
D 1 52 236910 1581.82 614 596 149.4
D 13 152 133864 892.06 614 596 149.4
D 10 253 125070 833.19 614 596 149.4

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