ASTROSAT CZTI

Data Quality Report

Orbit 11507

Creation date: 2024-06-27T16:13:57.156498
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/AS1A04_021T05_9000001686_11507cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11507cztM0_level2_quad_clean.evt
Size (bytes)589,743,360104,132,160
Size562.4 MB 99.3 MB
Events in quadrant A5,163,085673,278
Events in quadrant B4,568,715669,921
Events in quadrant C2,873,566727,493
Events in quadrant D4,856,038670,660

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194142
B0174281
C0121731
D0184181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A589559610.110263%
B589562210.551315%
C5895781.323155%
D58953746.344360%

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 7186 5897 341 341 4.75% 5.78%
B 7186 5897 284 284 3.95% 4.82%
C 7186 5897 0 0 0.00% 0.00%
D 7186 5897 247 247 3.44% 4.19%

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 1933315 13208.41 732 720 146.3
A 15 223 214683 1462.34 732 720 146.3
A 15 239 87232 591.27 732 720 146.3
B 4 239 737801 5469.88 716 699 134.8
B 3 64 710163 5264.79 716 699 134.8
B 11 51 181130 1338.94 716 699 134.8
C 13 61 5445 27.72 736 743 169.6
C 12 4 2865 12.51 736 743 169.6
C 3 202 1852 6.54 736 743 169.6
D 6 219 695157 4012.83 728 710 173.1
D 1 52 656825 3791.33 728 710 173.1
D 8 195 260183 1499.35 728 710 173.1

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