ASTROSAT CZTI

Data Quality Report

Orbit 37646

Creation date: 2024-06-27T21:42:35.581296
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/AS1A11_075T01_9000005342_37646cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37646cztM0_level2_quad_clean.evt
Size (bytes)503,375,04056,220,480
Size480.1 MB 53.6 MB
Events in quadrant A5,240,543327,564
Events in quadrant B3,267,237337,217
Events in quadrant C2,819,566335,825
Events in quadrant D3,541,511313,379

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193133
B0131532
C0115592
D0141822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55433245.845210%
B55431632.940646%
C5543150.270612%
D55431773.193217%

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 7186 5543 206 206 2.87% 3.72%
B 7185 5542 135 135 1.88% 2.44%
C 7185 5542 9 9 0.13% 0.16%
D 7185 5542 177 177 2.46% 3.19%

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 15 222 2141620 16560.84 639 625 129.3
A 10 83 326250 2518.75 639 625 129.3
A 9 143 143392 1104.32 639 625 129.3
B 5 255 399929 3162.32 641 624 126.3
B 5 172 198285 1565.39 641 624 126.3
B 5 184 34442 267.82 641 624 126.3
C 15 214 258870 1764.99 631 635 146.3
C 0 10 73603 498.72 631 635 146.3
C 14 254 23450 155.94 631 635 146.3
D 2 249 645820 4270.57 627 609 151.1
D 13 249 206809 1364.81 627 609 151.1
D 2 153 94444 621.08 627 609 151.1

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