ASTROSAT CZTI

Data Quality Report

Orbit 30471

Creation date: 2024-06-27T20:15:40.574362
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/AS1A10_058T03_9000004380_30471cztM0_level2.evt modeM0/AS1A10_058T03_9000004380_30471cztM0_level2_quad_clean.evt
Size (bytes)547,643,520102,441,600
Size522.3 MB 97.7 MB
Events in quadrant A3,258,568703,923
Events in quadrant B4,955,005695,071
Events in quadrant C3,961,978630,596
Events in quadrant D3,990,256640,551

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135082
B0189411
C0157291
D0157851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61841121.811125%
B61851552.506063%
C61855158.326597%
D61851242.004850%

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 7419 6185 9 9 0.12% 0.15%
B 7420 6186 5 5 0.07% 0.08%
C 7420 6186 109 109 1.47% 1.76%
D 7420 6186 69 69 0.93% 1.12%

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 0 13 68419 417.26 815 803 162.0
A 12 96 34736 209.4 815 803 162.0
A 13 254 12246 70.61 815 803 162.0
B 6 159 1732296 11440.64 797 780 151.3
B 0 230 38399 248.56 797 780 151.3
B 0 229 36577 236.52 797 780 151.3
C 15 208 665635 3932.16 735 739 169.1
C 14 238 205304 1209.79 735 739 169.1
C 14 254 112531 661.13 735 739 169.1
D 13 104 645524 3326.77 768 752 193.8
D 8 195 168826 867.19 768 752 193.8
D 7 238 147015 754.66 768 752 193.8

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