ASTROSAT CZTI

Data Quality Report

Orbit 37160

Creation date: 2024-06-27T21:36:21.556366
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_079T01_9000005284_37160cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37160cztM0_level2_quad_clean.evt
Size (bytes)433,710,72095,440,320
Size413.6 MB 91.0 MB
Events in quadrant A2,755,436656,045
Events in quadrant B2,956,310648,550
Events in quadrant C3,198,472636,790
Events in quadrant D3,877,169590,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112773
B0120432
C0125562
D0147642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5120140.273438%
B5120631.230469%
C51201142.226562%
D51203376.582031%

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 7243 5121 8 8 0.11% 0.16%
B 7243 5121 35 35 0.48% 0.68%
C 7243 5121 92 92 1.27% 1.80%
D 7243 5121 300 300 4.14% 5.86%

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 249607 1938.78 638 630 128.4
A 9 143 34426 263.17 638 630 128.4
A 13 6 7647 54.64 638 630 128.4
B 0 190 280910 2369.15 621 606 118.3
B 5 172 166232 1399.88 621 606 118.3
B 5 200 27205 224.82 621 606 118.3
C 14 254 444367 3111.74 611 619 142.6
C 15 214 218107 1525.11 611 619 142.6
C 0 10 127898 892.53 611 619 142.6
D 2 249 578534 3960.22 605 590 145.9
D 2 153 409130 2799.42 605 590 145.9
D 13 249 219096 1497.26 605 590 145.9

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