ASTROSAT CZTI

Data Quality Report

Orbit 26591

Creation date: 2024-06-27T19:30:46.681825
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/AS1A09_095T02_9000003846_26591cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26591cztM0_level2_quad_clean.evt
Size (bytes)528,595,20085,956,480
Size504.1 MB 82.0 MB
Events in quadrant A2,950,449576,154
Events in quadrant B3,265,955582,186
Events in quadrant C3,145,555545,053
Events in quadrant D6,266,894507,876

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120760
B0133430
C0127340
D0225340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56031051.873996%
B56041392.480371%
C56041582.819415%
D5604112220.021413%

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 6893 5603 0 0 0.00% 0.00%
B 6894 5604 20 20 0.29% 0.36%
C 6894 5604 12 12 0.17% 0.21%
D 6894 5604 993 993 14.40% 17.72%

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 12 96 29166 193.4 750 738 147.0
A 5 168 18132 118.34 750 738 147.0
A 0 13 11599 73.89 750 738 147.0
B 0 189 149558 1086.87 740 724 136.9
B 15 33 105551 765.51 740 724 136.9
B 5 172 61748 445.63 740 724 136.9
C 3 233 198034 1227.0 703 711 160.8
C 14 238 115712 715.1 703 711 160.8
C 15 208 87706 540.95 703 711 160.8
D 7 80 1484726 9167.92 665 648 161.9
D 2 250 1020044 6297.34 665 648 161.9
D 1 52 893485 5515.52 665 648 161.9

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