ASTROSAT CZTI

Data Quality Report

Orbit 11856

Creation date: 2024-06-27T16:19:12.494858
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_088T03_9000001750_11856cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11856cztM0_level2_quad_clean.evt
Size (bytes)457,839,36092,767,680
Size436.6 MB 88.5 MB
Events in quadrant A3,356,030600,426
Events in quadrant B3,791,850595,762
Events in quadrant C2,968,416587,439
Events in quadrant D3,299,564564,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142703
B0156212
C0135452
D0145932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6613941.421443%
B66131832.767277%
C6613310.468774%
D6613911.376077%

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 8964 6616 5 5 0.06% 0.08%
B 8964 6616 39 39 0.44% 0.59%
C 8964 6616 0 0 0.00% 0.00%
D 8964 6616 59 59 0.66% 0.89%

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 1 162 118151 730.43 794 777 160.7
A 1 178 57499 352.99 794 777 160.7
A 1 161 51051 312.86 794 777 160.7
B 4 239 403113 2670.75 786 766 150.6
B 15 204 93964 618.64 786 766 150.6
B 4 173 81109 533.31 786 766 150.6
C 13 61 5611 27.7 760 764 175.0
C 14 128 4597 21.91 760 764 175.0
C 3 202 1863 6.28 760 764 175.0
D 1 52 184957 1025.55 752 729 179.6
D 13 104 166240 921.36 752 729 179.6
D 7 71 43152 236.16 752 729 179.6

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