ASTROSAT CZTI

Data Quality Report

Orbit 29646

Creation date: 2024-06-27T20:06:25.481490
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/AS1T03_286T01_9000004268_29646cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29646cztM0_level2_quad_clean.evt
Size (bytes)359,182,08074,105,280
Size342.5 MB 70.7 MB
Events in quadrant A2,328,197475,673
Events in quadrant B2,459,530495,958
Events in quadrant C2,453,918477,746
Events in quadrant D3,300,132448,493

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101461
B0104271
C0104141
D0132661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4931100.202799%
B4931210.425877%
C4931511.034273%
D49311292.616102%

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 4931 4931 0 0 0.00% 0.00%
B 4931 4931 8 8 0.16% 0.16%
C 4931 4931 0 0 0.00% 0.00%
D 4931 4931 112 112 2.27% 2.27%

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 13 254 9362 72.55 603 590 120.9
A 3 137 5700 42.26 603 590 120.9
A 0 226 5050 36.89 603 590 120.9
B 15 33 56099 485.83 609 593 114.3
B 12 111 13880 116.3 609 593 114.3
B 11 111 12389 103.25 609 593 114.3
C 14 238 97611 713.49 590 595 136.0
C 3 233 22779 163.15 590 595 136.0
C 7 247 12536 87.82 590 595 136.0
D 13 153 485890 3579.72 577 562 135.6
D 8 195 340155 2504.8 577 562 135.6
D 2 250 148303 1089.72 577 562 135.6

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