ASTROSAT CZTI

Data Quality Report

Orbit 37637

Creation date: 2024-06-27T21:42:30.044123
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_9000005342_37637cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37637cztM0_level2_quad_clean.evt
Size (bytes)400,423,68097,971,840
Size381.9 MB 93.4 MB
Events in quadrant A2,766,724649,551
Events in quadrant B2,711,314674,047
Events in quadrant C2,801,656676,637
Events in quadrant D3,511,525620,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112793
B0110892
C0112122
D0136312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4933240.486519%
B4933340.689236%
C4933330.668964%
D49331913.871883%

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 9119 4935 21 21 0.23% 0.43%
B 9119 4933 23 23 0.25% 0.47%
C 9119 4933 20 20 0.22% 0.41%
D 9119 4933 213 213 2.34% 4.32%

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 301568 2520.5 598 587 119.4
A 15 222 68917 572.21 598 587 119.4
A 9 143 49603 410.47 598 587 119.4
B 5 172 82126 708.74 606 590 115.0
B 0 213 50458 433.47 606 590 115.0
B 0 190 40110 343.52 606 590 115.0
C 15 214 226958 1632.62 603 609 138.6
C 14 254 91391 654.8 603 609 138.6
C 0 10 82727 592.31 603 609 138.6
D 2 249 718202 5114.09 586 573 140.3
D 2 250 321322 2285.77 586 573 140.3
D 13 249 70264 496.64 586 573 140.3

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