ASTROSAT CZTI

Data Quality Report

Orbit 37636

Creation date: 2024-06-27T21:42:29.409895
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_37636cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37636cztM0_level2_quad_clean.evt
Size (bytes)454,008,96098,305,920
Size433.0 MB 93.8 MB
Events in quadrant A3,167,490651,972
Events in quadrant B2,853,199681,919
Events in quadrant C2,865,327681,277
Events in quadrant D4,525,625612,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125093
B0115582
C0115492
D0168662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49801633.273092%
B4980691.385542%
C4980450.903614%
D498051610.361446%

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 7043 4981 125 125 1.77% 2.51%
B 7042 4979 47 47 0.67% 0.94%
C 7042 4979 31 31 0.44% 0.62%
D 7042 4979 564 564 8.01% 11.33%

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 15 222 384245 3119.75 614 603 123.0
A 10 83 302979 2458.9 614 603 123.0
A 9 143 81544 658.21 614 603 123.0
B 5 172 96104 816.03 628 613 117.0
B 15 85 62787 531.32 628 613 117.0
B 10 245 50133 423.18 628 613 117.0
C 15 214 230805 1589.6 624 629 144.8
C 0 10 105554 724.62 624 629 144.8
C 12 250 69675 476.83 624 629 144.8
D 2 249 924091 6385.24 600 583 144.6
D 12 227 749181 5175.89 600 583 144.6
D 2 153 195995 1351.1 600 583 144.6

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