ASTROSAT CZTI

Data Quality Report

Orbit 25184

Creation date: 2024-06-27T19:14:49.032555
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/AS1A07_027T01_9000003690_25184cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25184cztM0_level2_quad_clean.evt
Size (bytes)395,392,32078,523,200
Size377.1 MB 74.9 MB
Events in quadrant A2,808,126511,016
Events in quadrant B2,871,540515,784
Events in quadrant C2,858,775485,876
Events in quadrant D3,062,699480,904

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117870
B0119300
C0118250
D0126940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5489510.929131%
B5489611.111314%
C5489581.056659%
D5489460.838040%

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 6694 5490 0 0 0.00% 0.00%
B 6694 5490 6 6 0.09% 0.11%
C 6694 5490 0 0 0.00% 0.00%
D 6694 5490 11 11 0.16% 0.20%

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 13 254 7990 50.86 728 716 143.0
A 0 226 6249 38.68 728 716 143.0
A 3 137 6213 38.43 728 716 143.0
B 3 64 30786 225.67 714 699 133.3
B 10 251 20567 149.02 714 699 133.3
B 0 190 17545 126.35 714 699 133.3
C 14 238 110803 693.3 684 689 158.8
C 8 208 43987 272.61 684 689 158.8
C 7 247 24374 149.13 684 689 158.8
D 8 195 251858 1469.34 703 683 170.9
D 12 233 84054 487.71 703 683 170.9
D 1 52 31417 179.79 703 683 170.9

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