ASTROSAT CZTI

Data Quality Report

Orbit 45957

Creation date: 2024-06-27T23:18:10.879519
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_071T06_9000006146_45957cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45957cztM0_level2_quad_clean.evt
Size (bytes)708,986,880123,670,080
Size676.1 MB 117.9 MB
Events in quadrant A6,675,047837,603
Events in quadrant B8,954,551779,622
Events in quadrant C3,454,022832,949
Events in quadrant D6,546,941741,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244490
B0323250
C0161840
D0250292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7945861.082442%
B7946116414.648880%
C794660.075510%
D79451912.404028%

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 7944 7944 1 1 0.01% 0.01%
B 7946 7946 935 935 11.77% 11.77%
C 7946 7946 1 1 0.01% 0.01%
D 7945 7945 171 171 2.15% 2.15%

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 3205365 17302.34 881 861 185.2
A 0 247 31561 165.76 881 861 185.2
A 14 235 15314 78.04 881 861 185.2
B 3 112 5053455 30239.13 841 814 167.1
B 4 21 464067 2772.48 841 814 167.1
B 8 234 23063 133.15 841 814 167.1
C 12 249 34854 166.83 866 869 203.7
C 14 254 20182 94.8 866 869 203.7
C 10 20 12202 55.63 866 869 203.7
D 11 241 2573285 11922.93 853 824 215.8
D 12 233 210289 970.84 853 824 215.8
D 12 2 133035 612.78 853 824 215.8

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