ASTROSAT CZTI

Data Quality Report

Orbit 25907

Creation date: 2024-06-27T19:22:39.895756
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_25907cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25907cztM0_level2_quad_clean.evt
Size (bytes)449,012,160104,627,520
Size428.2 MB 99.8 MB
Events in quadrant A3,807,375699,179
Events in quadrant B3,013,629709,501
Events in quadrant C3,039,431670,878
Events in quadrant D3,338,284678,022

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152390
B0126750
C0128370
D0136860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58821893.213193%
B5883671.138875%
C5883901.529832%
D5883721.223865%

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 7002 5883 113 113 1.61% 1.92%
B 7003 5884 2 2 0.03% 0.03%
C 7003 5884 1 1 0.01% 0.02%
D 7003 5884 19 19 0.27% 0.32%

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 827664 5368.18 772 759 154.0
A 13 254 7589 44.34 772 759 154.0
A 0 226 6741 38.83 772 759 154.0
B 12 111 17259 114.75 758 740 144.0
B 11 111 15577 103.07 758 740 144.0
B 14 111 14368 94.67 758 740 144.0
C 14 238 119581 695.79 731 735 170.8
C 3 233 70519 408.56 731 735 170.8
C 13 61 4813 23.87 731 735 170.8
D 1 52 471035 2643.35 749 733 177.9
D 2 234 22342 121.45 749 733 177.9
D 2 153 11194 58.8 749 733 177.9

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