ASTROSAT CZTI

Data Quality Report

Orbit 36308

Creation date: 2022-06-16T07:43:02.397911
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_089T02_9000005188_36308cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36308cztM0_level2_quad_clean.evt
Size (bytes)514,923,84056,819,520
Size491.1 MB 54.2 MB
Events in quadrant A2,777,902351,211
Events in quadrant B4,324,267337,144
Events in quadrant C2,900,041339,994
Events in quadrant D5,215,645302,708

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117693
B0165962
C0119852
D0193812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5561370.665348%
B55614738.505664%
C5561771.384643%
D55615509.890307%

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 9087 5563 27 27 0.30% 0.49%
B 9087 5563 381 381 4.19% 6.85%
C 9087 5563 69 69 0.76% 1.24%
D 9087 5562 554 554 6.10% 9.96%

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 183508 1438.5 630 619 127.1
A 9 143 125292 980.6 630 619 127.1
A 13 6 17601 133.57 630 619 127.1
B 5 172 1111952 9421.83 606 589 118.0
B 4 171 420696 3561.55 606 589 118.0
B 5 236 218211 1844.94 606 589 118.0
C 0 10 253442 1776.05 605 609 142.4
C 15 214 235170 1647.7 605 609 142.4
C 0 207 37574 259.66 605 609 142.4
D 12 235 1436819 9911.73 586 570 144.9
D 12 6 692621 4775.93 586 570 144.9
D 13 249 324187 2233.32 586 570 144.9

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