ASTROSAT CZTI

Data Quality Report

Orbit 14890

Creation date: 2024-06-27T17:00:58.502309
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/AS1T02_054T01_9000002200_14890cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14890cztM0_level2_quad_clean.evt
Size (bytes)566,760,960110,666,880
Size540.5 MB 105.5 MB
Events in quadrant A3,041,752738,731
Events in quadrant B3,786,970729,193
Events in quadrant C3,210,125748,631
Events in quadrant D6,687,727684,824

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131940
B0152960
C0135200
D0242580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A645550.077459%
B64551993.082881%
C6455130.201394%
D6455144922.447715%

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 7620 6456 0 0 0.00% 0.00%
B 7620 6456 140 140 1.84% 2.17%
C 7620 6456 0 0 0.00% 0.00%
D 7620 6456 1270 1270 16.67% 19.67%

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 11 29 10270 60.06 784 767 158.2
A 3 1 9245 53.59 784 767 158.2
A 12 189 7358 41.66 784 767 158.2
B 3 64 636786 4386.96 770 750 145.0
B 0 189 31807 214.21 770 750 145.0
B 10 246 31281 210.58 770 750 145.0
C 3 233 161977 904.28 777 780 178.3
C 0 207 14742 78.32 777 780 178.3
C 13 61 5443 26.16 777 780 178.3
D 7 254 3913336 23467.69 704 688 166.7
D 13 104 87123 518.43 704 688 166.7
D 2 234 21611 125.49 704 688 166.7

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