ASTROSAT CZTI

Data Quality Report

Orbit 10637

Creation date: 2024-06-27T16:01:48.663600
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_10637cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10637cztM0_level2_quad_clean.evt
Size (bytes)502,871,04092,191,680
Size479.6 MB 87.9 MB
Events in quadrant A2,802,800618,185
Events in quadrant B4,636,434597,067
Events in quadrant C3,452,454613,261
Events in quadrant D3,952,240565,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119682
B0174351
C0139661
D0158181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5685350.615655%
B56855309.322779%
C56852294.028144%
D5685691.213720%

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 6990 5686 0 0 0.00% 0.00%
B 6990 5686 359 359 5.14% 6.31%
C 6990 5686 192 192 2.75% 3.38%
D 6990 5686 45 45 0.64% 0.79%

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 13 251 39688 264.71 709 696 147.3
A 1 162 18205 118.86 709 696 147.3
A 0 226 6536 39.64 709 696 147.3
B 4 239 1772545 13380.27 694 682 132.4
B 0 219 76785 574.69 694 682 132.4
B 11 51 53545 399.2 694 682 132.4
C 4 254 814139 5278.05 665 675 154.1
C 14 234 33442 212.6 665 675 154.1
C 8 208 7350 43.31 665 675 154.1
D 8 195 450164 2782.79 665 650 161.5
D 2 16 289376 1787.41 665 650 161.5
D 1 20 231357 1428.23 665 650 161.5

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