ASTROSAT CZTI

Data Quality Report

Orbit 26226

Creation date: 2024-06-27T19:26:18.616300
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_019T04_9000003788_26226cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26226cztM0_level2_quad_clean.evt
Size (bytes)492,877,440127,739,520
Size470.0 MB 121.8 MB
Events in quadrant A3,256,051868,288
Events in quadrant B3,144,453902,691
Events in quadrant C3,100,884860,250
Events in quadrant D4,998,584798,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138170
B0134570
C0133470
D0191910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6288540.858779%
B6288350.556616%
C6288560.890585%
D62885017.967557%

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 7498 6289 47 47 0.63% 0.75%
B 7498 6289 14 14 0.19% 0.22%
C 7498 6289 0 0 0.00% 0.00%
D 7498 6289 464 464 6.19% 7.38%

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 298456 1939.67 766 751 153.5
A 13 254 10703 64.84 766 751 153.5
A 3 137 6891 40.0 766 751 153.5
B 5 172 78599 533.39 778 759 145.9
B 0 230 18834 123.85 778 759 145.9
B 12 111 16793 109.87 778 759 145.9
C 14 238 122756 702.66 752 757 173.6
C 3 233 27597 154.59 752 757 173.6
C 2 16 10514 56.2 752 757 173.6
D 1 52 1450224 8514.12 720 703 170.2
D 13 174 362903 2127.47 720 703 170.2
D 15 0 299905 1757.44 720 703 170.2

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