ASTROSAT CZTI

Data Quality Report

Orbit 04577

Creation date: 2024-06-27T14:44:00.920326
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/AS1G05_233T10_9000000570_04577cztM0_level2.evt modeM0/AS1G05_233T10_9000000570_04577cztM0_level2_quad_clean.evt
Size (bytes)484,680,96087,157,440
Size462.2 MB 83.1 MB
Events in quadrant A3,605,421544,162
Events in quadrant B3,567,115543,811
Events in quadrant C3,124,384540,112
Events in quadrant D3,900,287518,156

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157602
B0152061
C0145541
D0168641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70852803.952011%
B70851442.032463%
C7085700.988003%
D70853084.347212%

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 7420 7086 83 83 1.12% 1.17%
B 7420 7086 1 1 0.01% 0.01%
C 7420 7086 3 3 0.04% 0.04%
D 7420 7086 140 140 1.89% 1.98%

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 433932 2622.62 804 785 165.2
A 0 50 70218 420.4 804 785 165.2
A 0 226 8378 45.97 804 785 165.2
B 15 204 206927 1316.81 817 798 156.5
B 4 48 66280 418.32 817 798 156.5
B 14 167 63087 397.92 817 798 156.5
C 5 250 32935 175.05 786 789 183.6
C 9 16 8078 39.69 786 789 183.6
C 9 247 7107 34.4 786 789 183.6
D 10 15 315677 1699.6 775 751 185.3
D 13 239 165932 891.45 775 751 185.3
D 2 136 150826 809.93 775 751 185.3

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