ASTROSAT CZTI

Data Quality Report

Orbit 04821

Creation date: 2024-06-27T14:47:29.826090
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_144T01_9000000612_04821cztM0_level2.evt modeM0/AS1G05_144T01_9000000612_04821cztM0_level2_quad_clean.evt
Size (bytes)459,953,28076,063,680
Size438.6 MB 72.5 MB
Events in quadrant A3,097,236470,374
Events in quadrant B3,499,193473,767
Events in quadrant C2,983,399471,261
Events in quadrant D3,918,778445,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135843
B0146282
C0134622
D0160852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63471302.048212%
B6347931.465259%
C6347350.551442%
D63471963.088073%

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 7512 6348 8 8 0.11% 0.13%
B 7512 6348 30 30 0.40% 0.47%
C 7512 6348 5 5 0.07% 0.08%
D 7512 6348 152 152 2.02% 2.39%

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 13 251 129838 842.49 748 731 153.2
A 8 15 30561 194.66 748 731 153.2
A 0 149 26628 168.99 748 731 153.2
B 4 80 176826 1203.89 760 742 146.3
B 10 16 154819 1053.43 760 742 146.3
B 8 3 132247 899.1 760 742 146.3
C 9 247 139661 824.39 723 727 168.5
C 8 208 11713 65.19 723 727 168.5
C 13 61 5933 30.89 723 727 168.5
D 13 235 497929 2864.46 711 689 173.6
D 2 136 244970 1407.23 711 689 173.6
D 13 53 147833 847.65 711 689 173.6

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