ASTROSAT CZTI

Data Quality Report

Orbit 25867

Creation date: 2024-06-27T19:22:15.770778
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/AS1A07_068T01_9000003756_25867cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25867cztM0_level2_quad_clean.evt
Size (bytes)579,283,20098,320,320
Size552.4 MB 93.8 MB
Events in quadrant A5,415,143646,359
Events in quadrant B3,750,650668,764
Events in quadrant C3,340,961619,513
Events in quadrant D4,612,442605,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204440
B0152350
C0137680
D0178580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62635028.015328%
B62631652.634520%
C62631502.395018%
D62635138.190963%

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 7563 6264 221 221 2.92% 3.53%
B 7563 6264 21 21 0.28% 0.34%
C 7563 6264 1 1 0.01% 0.02%
D 7563 6264 518 518 6.85% 8.27%

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 0 13 2216795 13312.3 830 815 166.5
A 13 254 9437 51.8 830 815 166.5
A 0 226 7379 39.43 830 815 166.5
B 10 245 396365 2528.5 832 814 156.4
B 0 219 34787 217.17 832 814 156.4
B 12 111 18267 111.57 832 814 156.4
C 3 233 139954 761.23 787 790 182.8
C 14 238 129281 702.85 787 790 182.8
C 13 61 5577 26.19 787 790 182.8
D 1 52 1457183 7692.31 798 779 189.3
D 7 80 59884 312.18 798 779 189.3
D 2 234 25414 130.12 798 779 189.3

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