ASTROSAT CZTI

Data Quality Report

Orbit 08946

Creation date: 2024-06-27T15:39:18.942511
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/AS1A03_092T01_9000001240_08946cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08946cztM0_level2_quad_clean.evt
Size (bytes)451,468,80099,564,480
Size430.6 MB 95.0 MB
Events in quadrant A3,473,400645,945
Events in quadrant B3,252,286654,089
Events in quadrant C3,065,470639,261
Events in quadrant D3,441,956625,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143323
B0136702
C0134102
D0141002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64701562.411128%
B64701452.241113%
C64701001.545595%
D64701261.947450%

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 7595 6470 22 22 0.29% 0.34%
B 7595 6470 2 2 0.03% 0.03%
C 7595 6470 0 0 0.00% 0.00%
D 7595 6470 8 8 0.11% 0.12%

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 8 5 181772 1099.21 816 800 164.6
A 5 16 60520 362.73 816 800 164.6
A 15 174 46434 277.18 816 800 164.6
B 0 219 27381 173.22 813 795 153.5
B 0 214 17513 108.92 813 795 153.5
B 12 111 15708 97.16 813 795 153.5
C 13 61 6032 29.18 785 787 179.8
C 1 3 3200 13.42 785 787 179.8
C 3 202 1963 6.54 785 787 179.8
D 8 195 184903 893.8 792 770 206.0
D 1 52 67322 323.05 792 770 206.0
D 13 29 46690 222.9 792 770 206.0

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