ASTROSAT CZTI

Data Quality Report

Orbit 00225

Creation date: 2024-06-27T13:58:07.954102
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/AS1P01_123T01_9000000024_00225cztM0_level2.evt modeM0/AS1P01_123T01_9000000024_00225cztM0_level2_quad_clean.evt
Size (bytes)876,988,80074,640,960
Size836.4 MB 71.2 MB
Events in quadrant A6,538,568477,741
Events in quadrant B6,595,614480,412
Events in quadrant C5,790,721482,436
Events in quadrant D7,288,167453,673

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231072
B0233291
C0209271
D0254261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A522550.095694%
B5225250.478469%
C522520.038278%
D52252534.842105%

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 6929 5226 168 168 2.42% 3.21%
B 6929 5226 213 213 3.07% 4.08%
C 6929 5226 57 57 0.82% 1.09%
D 6929 5226 706 706 10.19% 13.51%

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 5 244 170115 463.66 1633 1612 363.4
A 0 253 16780 41.74 1633 1612 363.4
A 0 6 16024 39.66 1633 1612 363.4
B 5 46 162129 422.51 1595 1607 379.9
B 8 6 155615 405.37 1595 1607 379.9
B 7 220 133715 347.72 1595 1607 379.9
C 1 1 72720 173.8 1453 1505 409.7
C 0 186 5308 9.28 1453 1505 409.7
C 5 234 4916 8.32 1453 1505 409.7
D 1 4 1790085 4045.11 1402 1452 442.2
D 2 85 60393 133.3 1402 1452 442.2
D 10 98 17487 36.26 1402 1452 442.2

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