ASTROSAT CZTI

Data Quality Report

Orbit 36824

Creation date: 2024-06-27T21:32:04.714441
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_9000005244_36824cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36824cztM0_level2_quad_clean.evt
Size (bytes)682,640,64086,834,880
Size651.0 MB 82.8 MB
Events in quadrant A2,663,211629,639
Events in quadrant B11,364,622397,960
Events in quadrant C3,048,935639,828
Events in quadrant D3,248,454599,833

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112423
B0372242
C0122742
D0131542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5151150.291206%
B5151409379.460299%
C5151791.533683%
D51511623.145020%

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 7095 5152 11 11 0.16% 0.21%
B 7095 5151 3905 3905 55.04% 75.81%
C 7095 5152 59 59 0.83% 1.15%
D 7095 5152 167 167 2.35% 3.24%

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 233590 1870.65 611 601 124.5
A 9 143 25526 200.12 611 601 124.5
A 13 6 16287 125.94 611 601 124.5
B 12 1 8701256 107590.44 424 413 80.9
B 5 172 305575 3773.49 424 413 80.9
B 0 190 234693 2896.99 424 413 80.9
C 0 207 239320 1709.82 604 611 139.6
C 15 214 216283 1544.81 604 611 139.6
C 0 10 128930 919.12 604 611 139.6
D 12 233 387534 2693.27 593 580 143.7
D 13 249 273046 1896.41 593 580 143.7
D 2 249 104778 725.24 593 580 143.7

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