ASTROSAT CZTI

Data Quality Report

Orbit 27471

Creation date: 2024-06-27T19:40:23.885242
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_249T01_9000003934_27471cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27471cztM0_level2_quad_clean.evt
Size (bytes)484,675,200111,634,560
Size462.2 MB 106.5 MB
Events in quadrant A3,307,466751,364
Events in quadrant B4,284,839746,512
Events in quadrant C3,405,400720,534
Events in quadrant D3,232,859702,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139670
B0170780
C0142910
D0141060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6592140.212379%
B65923745.673544%
C6592681.031553%
D6593240.364022%

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 7792 6593 0 0 0.00% 0.00%
B 7792 6593 224 224 2.87% 3.40%
C 7792 6593 10 10 0.13% 0.15%
D 7793 6594 14 14 0.18% 0.21%

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 45144 262.98 846 830 168.5
A 13 254 10674 58.42 846 830 168.5
A 3 137 7611 40.24 846 830 168.5
B 3 64 1026090 6482.91 831 810 158.2
B 12 111 19159 116.02 831 810 158.2
B 11 111 16827 101.28 831 810 158.2
C 14 238 130970 688.97 809 818 188.9
C 10 22 65361 341.66 809 818 188.9
C 2 16 33754 174.35 809 818 188.9
D 1 52 76934 398.87 807 786 190.9
D 2 250 58285 301.18 807 786 190.9
D 2 234 26686 135.67 807 786 190.9

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