ASTROSAT CZTI

Data Quality Report

Orbit 45155

Creation date: 2024-06-27T23:10:00.741290
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_049T04_9000006048_45155cztM0_level2.fits modeM0/AS1A13_049T04_9000006048_45155cztM0_level2_quad_clean.evt
Size (bytes)597,600,00095,149,440
Size569.9 MB 90.7 MB
Events in quadrant A11,257,879362,016
Events in quadrant B3,397,235739,292
Events in quadrant C3,190,950718,576
Events in quadrant D3,807,115640,355

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374971
B0138861
C0133301
D0152251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6026318052.771324%
B60271011.675792%
C6027580.962336%
D60271742.887008%

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 7216 6027 2848 2848 39.47% 47.25%
B 7217 6028 23 23 0.32% 0.38%
C 7217 6028 20 20 0.28% 0.33%
D 7217 6027 114 114 1.58% 1.89%

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 7755861 78082.74 480 470 99.3
A 10 83 1591488 16018.67 480 470 99.3
A 15 174 22949 226.32 480 470 99.3
B 12 16 196899 1399.5 715 692 140.2
B 5 172 146802 1042.17 715 692 140.2
B 4 170 127602 905.22 715 692 140.2
C 1 3 158898 941.06 719 723 168.1
C 12 2 139361 824.82 719 723 168.1
C 14 254 55248 324.39 719 723 168.1
D 13 249 410934 2338.59 709 689 175.4
D 1 52 240974 1369.74 709 689 175.4
D 11 241 159334 904.35 709 689 175.4

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