ASTROSAT CZTI

Data Quality Report

Orbit 37677

Creation date: 2024-06-27T21:42:59.229628
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_37677cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37677cztM0_level2_quad_clean.evt
Size (bytes)438,641,28058,671,360
Size418.3 MB 56.0 MB
Events in quadrant A3,131,990353,096
Events in quadrant B3,082,271357,435
Events in quadrant C2,768,326356,380
Events in quadrant D3,939,685335,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126393
B0124532
C0112502
D0152612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5336350.655922%
B5336841.574213%
C5336160.299850%
D53361983.710645%

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 7129 5337 10 10 0.14% 0.19%
B 7128 5335 70 70 0.98% 1.31%
C 7128 5335 10 10 0.14% 0.19%
D 7128 5335 191 191 2.68% 3.58%

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 319855 2470.25 644 631 129.2
A 9 143 111477 857.76 644 631 129.2
A 6 10 100226 770.7 644 631 129.2
B 5 172 308594 2525.54 638 622 121.9
B 5 200 73246 595.56 638 622 121.9
B 5 255 42825 346.09 638 622 121.9
C 15 214 247927 1717.52 625 631 144.0
C 0 10 63306 435.29 625 631 144.0
C 14 254 14387 95.54 625 631 144.0
D 12 227 1044372 6881.9 621 603 151.7
D 5 222 193677 1273.0 621 603 151.7
D 5 70 79727 521.69 621 603 151.7

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