ASTROSAT CZTI

Data Quality Report

Orbit 13940

Creation date: 2024-06-27T16:48:13.064914
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/AS1T02_041T01_9000002058_13940cztM0_level2.evt modeM0/AS1T02_041T01_9000002058_13940cztM0_level2_quad_clean.evt
Size (bytes)600,192,000105,036,480
Size572.4 MB 100.2 MB
Events in quadrant A2,988,252676,997
Events in quadrant B3,981,315687,743
Events in quadrant C3,273,299729,481
Events in quadrant D7,504,027643,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132803
B0161842
C0137672
D0268212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6353200.314812%
B63532794.391626%
C6353330.519440%
D635370111.034157%

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 7528 6354 0 0 0.00% 0.00%
B 7529 6355 178 178 2.36% 2.80%
C 7529 6355 7 7 0.09% 0.11%
D 7529 6354 665 665 8.83% 10.47%

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 15 222 69775 454.69 749 733 151.8
A 1 162 15689 98.5 749 733 151.8
A 15 69 8390 50.43 749 733 151.8
B 10 245 635150 4549.04 751 731 139.5
B 3 64 212712 1519.99 751 731 139.5
B 4 142 78657 558.76 751 731 139.5
C 3 233 214983 1241.6 757 760 172.5
C 4 254 96115 552.66 757 760 172.5
C 14 234 12458 67.8 757 760 172.5
D 1 52 3358376 19413.83 716 699 173.0
D 12 110 1151459 6653.6 716 699 173.0
D 13 122 79704 456.8 716 699 173.0

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