ASTROSAT CZTI

Data Quality Report

Orbit 22350

Creation date: 2024-06-27T18:40:26.393203
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/AS1C05_004T01_9000003308_22350cztM0_level2.evt modeM0/AS1C05_004T01_9000003308_22350cztM0_level2_quad_clean.evt
Size (bytes)447,295,68098,179,200
Size426.6 MB 93.6 MB
Events in quadrant A3,133,129639,796
Events in quadrant B3,262,926659,120
Events in quadrant C3,185,611621,980
Events in quadrant D3,524,518600,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133892
B0136562
C0134622
D0149732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6475140.216216%
B6475300.463320%
C6475661.019305%
D6475751.158301%

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 7820 6476 0 0 0.00% 0.00%
B 7820 6476 1 1 0.01% 0.02%
C 7820 6476 0 0 0.00% 0.00%
D 7820 6476 21 21 0.27% 0.32%

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 3 1 28786 174.87 805 790 160.1
A 13 254 9203 52.55 805 790 160.1
A 0 226 7089 39.35 805 790 160.1
B 0 197 28389 184.09 812 793 149.9
B 0 229 20904 134.16 812 793 149.9
B 12 111 17635 112.35 812 793 149.9
C 14 238 126029 689.71 778 783 181.6
C 0 10 20826 110.37 778 783 181.6
C 3 9 6513 31.55 778 783 181.6
D 12 227 435137 2318.68 776 753 187.3
D 7 223 82837 438.15 776 753 187.3
D 1 52 36811 192.47 776 753 187.3

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