ASTROSAT CZTI

Data Quality Report

Orbit 10064

Creation date: 2024-06-27T15:54:18.916989
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_008T01_9000001442_10064cztM0_level2.evt modeM0/AS1A03_008T01_9000001442_10064cztM0_level2_quad_clean.evt
Size (bytes)42,471,36011,975,040
Size40.5 MB 11.4 MB
Events in quadrant A299,51575,522
Events in quadrant B318,31880,390
Events in quadrant C314,37580,043
Events in quadrant D301,07267,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01597114563
B01610114634
C01590814406
D01767116277

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161139
B0158137
C0157144
D0158144

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053
B065
C054
D065

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70010.142857%
B73130.410397%
C75100.000000%
D66371.055807%

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 8482 1144 0 0 0.00% 0.00%
B 8421 1204 0 0 0.00% 0.00%
C 8494 1236 0 0 0.00% 0.00%
D 7745 1104 6 6 0.08% 0.54%

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 6627 368.4 75 73 17.8
A 0 8 1397 74.42 75 73 17.8
A 0 226 654 32.66 75 73 17.8
B 0 219 2409 132.66 80 78 17.6
B 0 214 2340 128.73 80 78 17.6
B 12 111 1745 94.87 80 78 17.6
C 13 61 619 26.23 80 80 20.6
C 4 175 558 23.26 80 80 20.6
C 8 222 430 17.03 80 80 20.6
D 10 199 24045 1196.71 68 66 20.0
D 8 195 4416 217.09 68 66 20.0
D 9 85 3702 181.46 68 66 20.0

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