ASTROSAT CZTI

Data Quality Report

Orbit 24521

Creation date: 2024-06-27T19:06:51.617935
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_183T01_9000003606_24521cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24521cztM0_level2_quad_clean.evt
Size (bytes)580,798,080120,792,960
Size553.9 MB 115.2 MB
Events in quadrant A4,109,784836,066
Events in quadrant B3,866,064854,331
Events in quadrant C4,568,622766,972
Events in quadrant D4,625,257767,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168492
B0154732
C0175102
D0179092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62081101.771907%
B62082504.027062%
C62084186.733247%
D6208861.385309%

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 7513 6209 7 7 0.09% 0.11%
B 7513 6209 91 91 1.21% 1.47%
C 7513 6209 291 291 3.87% 4.69%
D 7513 6209 39 39 0.52% 0.63%

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 14 111 1023773 6468.89 797 783 158.1
A 4 2 14575 87.21 797 783 158.1
A 13 254 10020 58.41 797 783 158.1
B 3 64 762602 5220.92 792 773 145.9
B 12 111 17120 112.02 792 773 145.9
B 11 111 14903 96.83 792 773 145.9
C 2 16 1347850 7942.08 737 741 169.6
C 10 9 213789 1256.06 737 741 169.6
C 14 238 121379 711.24 737 741 169.6
D 1 52 1532515 8532.79 756 737 179.5
D 8 195 176135 977.06 756 737 179.5
D 9 1 24874 134.46 756 737 179.5

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