ASTROSAT CZTI

Data Quality Report

Orbit 25594

Creation date: 2024-06-27T19:19:20.496647
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/AS1A09_043T02_9000003726_25594cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25594cztM0_level2_quad_clean.evt
Size (bytes)628,384,32087,125,760
Size599.3 MB 83.1 MB
Events in quadrant A4,352,400577,665
Events in quadrant B3,412,302588,663
Events in quadrant C3,280,090548,721
Events in quadrant D7,539,979463,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167990
B0138350
C0135550
D0272430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65891672.534527%
B65901181.790592%
C65901271.927162%
D659096014.567527%

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 7409 6591 6 6 0.08% 0.09%
B 7410 6592 0 0 0.00% 0.00%
C 7410 6592 0 0 0.00% 0.00%
D 7410 6592 804 804 10.85% 12.20%

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 6 16 626667 3645.63 850 832 171.7
A 8 192 445242 2588.79 850 832 171.7
A 13 254 10284 55.06 850 832 171.7
B 0 219 50934 309.85 845 826 161.7
B 0 190 33356 201.15 845 826 161.7
B 12 111 19696 116.69 845 826 161.7
C 14 238 131968 691.44 806 812 189.7
C 3 233 8182 38.85 806 812 189.7
C 13 61 5619 25.34 806 812 189.7
D 1 52 2251256 11998.67 766 745 187.6
D 12 2 1957120 10430.47 766 745 187.6
D 2 244 232658 1236.45 766 745 187.6

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