ASTROSAT CZTI

Data Quality Report

Orbit 24674

Creation date: 2024-06-27T19:08:37.344028
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/AS1T03_191T01_9000003618_24674cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24674cztM0_level2_quad_clean.evt
Size (bytes)433,782,720124,502,400
Size413.7 MB 118.7 MB
Events in quadrant A3,031,443846,826
Events in quadrant B3,113,342855,362
Events in quadrant C3,057,216814,590
Events in quadrant D3,496,547804,275

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131651
B0132841
C0131571
D0145353

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6446320.496432%
B6446420.651567%
C6447781.209865%
D6446590.915296%

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 7371 6446 2 2 0.03% 0.03%
B 7371 6446 0 0 0.00% 0.00%
C 7372 6447 0 0 0.00% 0.00%
D 7371 6447 33 33 0.45% 0.51%

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 4 2 26857 166.99 778 762 156.3
A 13 254 10610 63.02 778 762 156.3
A 3 137 7043 40.19 778 762 156.3
B 0 189 39582 264.76 773 753 146.7
B 7 202 23072 152.18 773 753 146.7
B 12 111 18055 117.97 773 753 146.7
C 14 238 120684 687.43 750 753 174.5
C 2 16 8210 42.74 750 753 174.5
C 13 61 5308 26.11 750 753 174.5
D 1 52 396238 2166.19 758 736 182.6
D 8 195 226250 1235.15 758 736 182.6
D 2 234 29082 155.25 758 736 182.6

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