ASTROSAT CZTI

Data Quality Report

Orbit 05727

Creation date: 2024-06-27T14:58:24.094114
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/AS1A02_098T01_9000000736_05727cztM0_level2.evt modeM0/AS1A02_098T01_9000000736_05727cztM0_level2_quad_clean.evt
Size (bytes)452,678,40077,693,760
Size431.7 MB 74.1 MB
Events in quadrant A3,006,314473,353
Events in quadrant B3,681,578474,581
Events in quadrant C2,990,622480,378
Events in quadrant D3,575,000456,872

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137331
B0153041
C0137681
D0152771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6707370.551662%
B6707831.237513%
C670790.134188%
D67071231.833905%

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 7077 6708 9 9 0.13% 0.13%
B 7077 6708 35 35 0.49% 0.52%
C 7077 6708 5 5 0.07% 0.07%
D 7077 6708 99 99 1.40% 1.48%

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 7 16 24326 151.36 759 741 155.8
A 15 174 17950 110.44 759 741 155.8
A 0 31 14897 90.85 759 741 155.8
B 15 204 241327 1623.24 768 750 148.2
B 5 172 188510 1266.87 768 750 148.2
B 0 219 66416 443.07 768 750 148.2
C 1 16 82434 473.22 737 742 172.6
C 9 16 15672 86.49 737 742 172.6
C 14 67 8309 43.83 737 742 172.6
D 0 11 432419 2388.01 730 708 180.8
D 2 152 84653 464.34 730 708 180.8
D 2 33 81307 445.83 730 708 180.8

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