ASTROSAT CZTI

Data Quality Report

Orbit 44144

Creation date: 2024-06-27T22:59:43.984480
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/AS1A13_012T02_9000005950_44144cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44144cztM0_level2_quad_clean.evt
Size (bytes)518,011,200116,213,760
Size494.0 MB 110.8 MB
Events in quadrant A6,583,470706,419
Events in quadrant B4,044,091806,417
Events in quadrant C3,571,144791,055
Events in quadrant D4,401,215699,722

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245241
B0172801
C0159311
D0186881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A740099813.486486%
B74012533.418457%
C7401260.351304%
D74012543.431969%

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 7780 7401 382 382 4.91% 5.16%
B 7781 7403 150 150 1.93% 2.03%
C 7781 7403 4 4 0.05% 0.05%
D 7781 7403 182 182 2.34% 2.46%

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 15 223 1753310 10707.11 781 764 163.7
A 10 83 1273364 7774.9 781 764 163.7
A 14 238 509699 3109.32 781 764 163.7
B 5 172 567743 3505.74 817 792 161.7
B 0 200 159614 982.07 817 792 161.7
B 5 235 29777 179.23 817 792 161.7
C 1 241 332568 1737.59 811 816 190.9
C 14 254 44184 227.14 811 816 190.9
C 2 14 10153 48.9 811 816 190.9
D 1 47 831938 4109.94 793 767 202.2
D 2 249 267856 1320.69 793 767 202.2
D 13 249 67518 330.07 793 767 202.2

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