ASTROSAT CZTI

Data Quality Report

Orbit 14678

Creation date: 2024-06-27T16:58:22.500121
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_101T01_9000002170_14678cztM0_level2.evt modeM0/AS1A04_101T01_9000002170_14678cztM0_level2_quad_clean.evt
Size (bytes)520,692,48097,617,600
Size496.6 MB 93.1 MB
Events in quadrant A4,888,868629,189
Events in quadrant B3,391,360628,670
Events in quadrant C3,823,453626,644
Events in quadrant D3,225,014618,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191963
B0142012
C0156602
D0139622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64981742.677747%
B64981001.538935%
C6498861.323484%
D6498610.938750%

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 7709 6499 26 26 0.34% 0.40%
B 7709 6499 6 6 0.08% 0.09%
C 7709 6499 1 1 0.01% 0.02%
D 7709 6499 4 4 0.05% 0.06%

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 15 1258658 7381.61 845 830 170.4
A 0 253 299759 1754.27 845 830 170.4
A 1 162 40794 234.53 845 830 170.4
B 0 219 39431 241.74 833 813 159.7
B 0 205 26462 160.56 833 813 159.7
B 0 197 24374 147.49 833 813 159.7
C 3 233 636870 3377.52 813 819 188.3
C 0 207 12852 63.9 813 819 188.3
C 13 61 5872 26.83 813 819 188.3
D 2 120 28914 129.18 817 803 217.6
D 2 152 28349 126.58 817 803 217.6
D 2 234 24236 107.68 817 803 217.6

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