ASTROSAT CZTI

Data Quality Report

Orbit 27693

Creation date: 2024-06-27T19:43:12.955785
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/AS1T03_262T01_9000003988_27693cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27693cztM0_level2_quad_clean.evt
Size (bytes)479,093,76092,926,080
Size456.9 MB 88.6 MB
Events in quadrant A3,183,463600,522
Events in quadrant B3,313,162611,444
Events in quadrant C3,410,131584,930
Events in quadrant D4,148,573551,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137950
B0141060
C0143450
D0169880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6684290.433872%
B6684610.912627%
C6683841.256921%
D66832694.025138%

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 7624 6685 1 1 0.01% 0.01%
B 7624 6685 4 4 0.05% 0.06%
C 7623 6684 21 21 0.28% 0.31%
D 7623 6683 212 212 2.78% 3.17%

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 6 16 35164 210.65 813 796 163.2
A 8 192 11838 67.68 813 796 163.2
A 13 254 11080 63.03 813 796 163.2
B 0 230 96706 622.41 813 792 154.1
B 12 111 19073 118.63 813 792 154.1
B 15 32 16930 104.72 813 792 154.1
C 3 233 189755 1031.61 789 795 183.2
C 14 238 126578 686.7 789 795 183.2
C 8 208 14483 74.73 789 795 183.2
D 1 52 665014 3650.78 770 750 182.0
D 12 2 401393 2201.93 770 750 182.0
D 2 250 76665 417.23 770 750 182.0

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