ASTROSAT CZTI

Data Quality Report

Orbit 27124

Creation date: 2024-06-27T19:36:45.803959
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/AS1T03_244T01_9000003912_27124cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27124cztM0_level2_quad_clean.evt
Size (bytes)583,329,600118,293,120
Size556.3 MB 112.8 MB
Events in quadrant A5,384,731795,250
Events in quadrant B3,853,546815,694
Events in quadrant C3,449,594771,174
Events in quadrant D4,539,846748,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205830
B0156180
C0143380
D0179170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64693295.085794%
B64701161.792890%
C64701201.854714%
D64701963.029366%

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 7714 6470 213 213 2.76% 3.29%
B 7714 6470 26 26 0.34% 0.40%
C 7714 6470 0 0 0.00% 0.00%
D 7714 6470 124 124 1.61% 1.92%

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 6 16 1536864 8930.38 876 862 172.0
A 14 235 337609 1957.86 876 862 172.0
A 11 29 85763 493.62 876 862 172.0
B 10 245 110505 684.07 869 851 160.3
B 0 189 96351 595.77 869 851 160.3
B 7 205 80775 498.6 869 851 160.3
C 14 238 134796 686.65 843 849 195.1
C 3 233 15868 76.99 843 849 195.1
C 2 16 8048 36.9 843 849 195.1
D 1 52 555345 2515.24 846 833 220.5
D 7 38 420618 1904.12 846 833 220.5
D 12 233 223503 1010.02 846 833 220.5

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