ASTROSAT CZTI

Data Quality Report

Orbit 10641

Creation date: 2024-06-27T16:01:52.512033
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/AS1T01_191T01_9000001536_10641cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10641cztM0_level2_quad_clean.evt
Size (bytes)534,836,16087,007,680
Size510.1 MB 83.0 MB
Events in quadrant A3,802,633547,083
Events in quadrant B4,128,331539,493
Events in quadrant C4,019,980546,673
Events in quadrant D3,779,276521,499

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158563
B0167742
C0167342
D0157272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68892052.975758%
B68892834.107998%
C68892503.628974%
D68891031.495137%

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 7584 6890 115 115 1.52% 1.67%
B 7584 6890 109 109 1.44% 1.58%
C 7584 6890 155 155 2.04% 2.25%
D 7584 6890 34 34 0.45% 0.49%

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 15 239 530286 3086.85 828 811 171.5
A 15 174 40600 231.97 828 811 171.5
A 1 162 10370 55.73 828 811 171.5
B 4 239 731771 4607.29 829 810 158.7
B 0 214 75941 473.56 829 810 158.7
B 3 189 47947 297.11 829 810 158.7
C 4 254 839179 4471.75 808 814 187.5
C 14 234 22791 117.22 808 814 187.5
C 4 175 6028 27.81 808 814 187.5
D 8 195 277132 1426.88 801 780 193.7
D 1 20 141548 726.82 801 780 193.7
D 2 16 122479 628.36 801 780 193.7

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