ASTROSAT CZTI

Data Quality Report

Orbit 26169

Creation date: 2024-06-27T19:25:36.832885
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_138T04_9000003776_26169cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26169cztM0_level2_quad_clean.evt
Size (bytes)476,432,640119,018,880
Size454.4 MB 113.5 MB
Events in quadrant A3,285,831788,853
Events in quadrant B3,332,797820,639
Events in quadrant C3,956,388783,047
Events in quadrant D3,431,740778,297

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135930
B0137800
C0157440
D0141830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6219230.369834%
B6219410.659270%
C62192353.778743%
D6219300.482393%

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 7539 6218 0 0 0.00% 0.00%
B 7539 6218 2 2 0.03% 0.03%
C 7539 6218 68 68 0.90% 1.09%
D 7539 6218 5 5 0.07% 0.08%

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 18961 109.55 845 830 165.5
A 13 254 10783 60.14 845 830 165.5
A 0 13 9835 54.41 845 830 165.5
B 12 111 18527 112.01 847 826 158.0
B 11 111 16636 100.04 847 826 158.0
B 14 111 15027 89.86 847 826 158.0
C 2 16 534921 2760.22 833 841 193.5
C 14 238 134460 690.57 833 841 193.5
C 3 233 39537 199.99 833 841 193.5
D 1 52 184272 922.45 843 826 198.9
D 2 234 25028 121.7 843 826 198.9
D 13 238 19477 93.79 843 826 198.9

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