ASTROSAT CZTI

Data Quality Report

Orbit 32090

Creation date: 2024-06-27T20:36:22.699666
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/AS1T04_051T01_9000004686_32090cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32090cztM0_level2_quad_clean.evt
Size (bytes)731,652,48071,118,720
Size697.8 MB 67.8 MB
Events in quadrant A3,478,544449,435
Events in quadrant B7,025,515423,072
Events in quadrant C3,913,478438,343
Events in quadrant D7,306,748392,751

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141342
B0252392
C0157142
D0262402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6444380.589696%
B644369310.755859%
C64432573.988825%
D644367310.445445%

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 7764 6444 0 0 0.00% 0.00%
B 7763 6443 444 444 5.72% 6.89%
C 7762 6442 29 29 0.37% 0.45%
D 7763 6443 658 658 8.48% 10.21%

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 13 254 11951 62.76 900 887 176.3
A 13 6 8926 45.6 900 887 176.3
A 3 137 8166 41.29 900 887 176.3
B 6 159 1757764 10939.83 875 855 160.6
B 10 245 1551453 9655.18 875 855 160.6
B 5 172 225093 1396.27 875 855 160.6
C 14 238 191675 969.86 867 875 196.7
C 0 10 174721 883.68 867 875 196.7
C 14 254 65839 330.22 867 875 196.7
D 12 227 2836071 14345.73 850 830 197.6
D 8 195 773312 3908.6 850 830 197.6
D 12 233 336338 1697.6 850 830 197.6

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