ASTROSAT CZTI

Data Quality Report

Orbit 20756

Creation date: 2024-06-27T18:19:14.153519
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/AS1A05_013T01_9000003070_20756cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20756cztM0_level2_quad_clean.evt
Size (bytes)486,861,120126,901,440
Size464.3 MB 121.0 MB
Events in quadrant A3,445,833881,832
Events in quadrant B3,666,150865,252
Events in quadrant C3,387,360830,675
Events in quadrant D3,820,926829,368

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142922
B0149432
C0141922
D0156172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62501091.744000%
B62501512.416000%
C62501552.480000%
D62501051.680000%

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 7570 6250 2 2 0.03% 0.03%
B 7570 6250 31 31 0.41% 0.50%
C 7570 6250 0 0 0.00% 0.00%
D 7570 6250 6 6 0.08% 0.10%

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 5 16 23114 125.41 891 877 177.3
A 0 226 7857 39.37 891 877 177.3
A 12 194 6446 31.41 891 877 177.3
B 7 220 215374 1334.64 861 843 160.7
B 0 197 29696 179.5 861 843 160.7
B 0 189 21965 131.4 861 843 160.7
C 14 238 135446 706.71 833 841 190.5
C 13 61 5866 26.38 833 841 190.5
C 3 233 3135 12.04 833 841 190.5
D 12 227 167923 820.86 864 842 203.5
D 1 20 163094 797.13 864 842 203.5
D 1 52 119995 585.39 864 842 203.5

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