ASTROSAT CZTI

Data Quality Report

Orbit 36241

Creation date: 2022-06-13T12:55:28.967933
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/AS1A10_071T34_9000005178_36241cztM0_level2.evt modeM0/AS1A10_071T34_9000005178_36241cztM0_level2_quad_clean.evt
Size (bytes)403,309,44077,454,720
Size384.6 MB 73.9 MB
Events in quadrant A2,609,990502,091
Events in quadrant B2,920,566502,006
Events in quadrant C2,786,315495,648
Events in quadrant D3,533,314470,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112012
B0121501
C0114911
D0140581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5352130.242900%
B5352871.625561%
C5352320.597907%
D53521232.298206%

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 6934 5353 4 4 0.06% 0.07%
B 6934 5353 62 62 0.89% 1.16%
C 6934 5353 18 18 0.26% 0.34%
D 6934 5353 108 108 1.56% 2.02%

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 142144 1117.03 624 610 126.7
A 9 143 33958 263.19 624 610 126.7
A 14 239 20177 154.43 624 610 126.7
B 5 172 285968 2402.55 614 597 118.8
B 5 255 89431 747.9 614 597 118.8
B 0 190 43899 364.56 614 597 118.8
C 15 214 218478 1526.7 606 608 142.7
C 0 10 191064 1334.6 606 608 142.7
C 0 207 6705 42.72 606 608 142.7
D 12 6 355026 2371.15 604 588 149.5
D 12 235 348220 2325.62 604 588 149.5
D 13 171 150594 1003.52 604 588 149.5

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