ASTROSAT CZTI

Data Quality Report

Orbit 26196

Creation date: 2024-06-27T19:25:58.529619
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_007T01_9000003786_26196cztM0_level2.evt modeM0/AS1C05_007T01_9000003786_26196cztM0_level2_quad_clean.evt
Size (bytes)494,464,32088,908,480
Size471.6 MB 84.8 MB
Events in quadrant A3,339,525574,201
Events in quadrant B3,401,774581,212
Events in quadrant C3,884,978537,254
Events in quadrant D3,894,438533,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139550
B0141410
C0157650
D0160560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6688370.553230%
B6689711.061444%
C66891732.586336%
D66891592.377037%

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 8693 6690 0 0 0.00% 0.00%
B 8694 6691 17 17 0.20% 0.25%
C 8694 6691 38 38 0.44% 0.57%
D 8694 6691 132 132 1.52% 1.97%

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 42119 241.67 855 838 170.8
A 13 254 11177 60.53 855 838 170.8
A 3 137 7815 40.85 855 838 170.8
B 5 172 68689 416.61 849 828 162.9
B 12 111 19400 114.02 849 828 162.9
B 11 111 17157 100.25 849 828 162.9
C 2 16 318494 1683.31 806 813 188.7
C 3 233 275068 1453.2 806 813 188.7
C 14 238 129696 682.92 806 813 188.7
D 1 52 600769 3077.6 810 791 195.0
D 12 233 170671 871.4 810 791 195.0
D 2 234 29443 146.97 810 791 195.0

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