ASTROSAT CZTI

Data Quality Report

Orbit 17832

Creation date: 2024-06-27T17:41:32.228079
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_025T04_9000002652_17832cztM0_level2.evt modeM0/AS1A05_025T04_9000002652_17832cztM0_level2_quad_clean.evt
Size (bytes)447,134,40094,262,400
Size426.4 MB 89.9 MB
Events in quadrant A3,579,128606,593
Events in quadrant B3,218,248636,522
Events in quadrant C3,109,113605,776
Events in quadrant D3,222,515581,637

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144182
B0133052
C0128522
D0135632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60712043.360237%
B6071350.576511%
C6071400.658870%
D6070160.263591%

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 7476 6072 171 171 2.29% 2.82%
B 7476 6072 5 5 0.07% 0.08%
C 7476 6072 0 0 0.00% 0.00%
D 7475 6071 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 15 174 606133 3959.36 773 758 152.9
A 0 226 6741 39.13 773 758 152.9
A 12 194 5541 31.28 773 758 152.9
B 10 245 44398 300.15 793 775 145.3
B 0 189 19817 131.02 793 775 145.3
B 12 111 16977 111.48 793 775 145.3
C 14 238 121043 680.31 759 766 176.8
C 5 218 26279 144.31 759 766 176.8
C 13 61 5286 25.57 759 766 176.8
D 7 238 157072 808.86 750 734 193.3
D 12 110 91841 471.37 750 734 193.3
D 10 70 51627 263.31 750 734 193.3

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