ASTROSAT CZTI

Data Quality Report

Orbit 33435

Creation date: 2024-06-27T20:48:47.670573
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_046T04_9000004792_33435cztM0_level2.evt modeM0/AS1A11_046T04_9000004792_33435cztM0_level2_quad_clean.evt
Size (bytes)577,319,04097,110,720
Size550.6 MB 92.6 MB
Events in quadrant A2,620,591669,326
Events in quadrant B3,116,028673,767
Events in quadrant C3,185,443666,716
Events in quadrant D8,206,466562,290

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108792
B0128271
C0127081
D0280801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526440.075988%
B52641372.602584%
C52641001.899696%
D5264127624.240122%

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 7057 5265 0 0 0.00% 0.00%
B 7057 5265 94 94 1.33% 1.79%
C 7057 5265 89 89 1.26% 1.69%
D 7057 5265 1384 1384 19.61% 26.29%

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 47 264774 2185.96 605 594 120.9
A 13 6 13574 107.4 605 594 120.9
A 13 254 9739 75.67 605 594 120.9
B 5 172 479132 4236.93 601 588 112.9
B 5 255 81948 720.34 601 588 112.9
B 0 213 46533 406.79 601 588 112.9
C 1 23 374535 2773.51 588 594 134.8
C 15 214 228742 1692.17 588 594 134.8
C 3 233 113599 838.16 588 594 134.8
D 1 52 3272208 24402.96 539 523 134.1
D 8 195 2208870 16471.7 539 523 134.1
D 13 249 190628 1417.96 539 523 134.1

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