ASTROSAT CZTI

Data Quality Report

Orbit 11552

Creation date: 2024-06-27T16:14:38.608066
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/AS1G08_009T01_9000001692_11552cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11552cztM0_level2_quad_clean.evt
Size (bytes)658,785,60089,294,400
Size628.3 MB 85.2 MB
Events in quadrant A5,663,846550,616
Events in quadrant B4,399,284579,554
Events in quadrant C3,002,953583,850
Events in quadrant D6,445,997536,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213912
B0172811
C0134241
D0237131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65036459.918499%
B65033104.767031%
C6503661.014916%
D6503102515.761956%

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 7529 6505 279 279 3.71% 4.29%
B 7529 6505 145 145 1.93% 2.23%
C 7529 6505 0 0 0.00% 0.00%
D 7529 6505 916 916 12.17% 14.08%

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 2238291 14225.28 770 754 157.3
A 1 162 158704 1004.18 770 754 157.3
A 1 178 91494 576.89 770 754 157.3
B 4 239 909207 6015.54 789 771 151.0
B 11 51 190072 1253.53 789 771 151.0
B 15 204 170661 1124.99 789 771 151.0
C 13 61 5702 27.5 769 774 179.2
C 13 250 2042 7.08 769 774 179.2
C 3 202 1919 6.39 769 774 179.2
D 1 52 1862177 11128.77 698 678 167.3
D 1 255 938622 5607.4 698 678 167.3
D 13 137 584180 3488.4 698 678 167.3

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