ASTROSAT CZTI

Data Quality Report

Orbit 18757

Creation date: 2024-06-27T17:54:26.721627
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/AS1A05_156T01_9000002804_18757cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18757cztM0_level2_quad_clean.evt
Size (bytes)468,532,80081,331,200
Size446.8 MB 77.6 MB
Events in quadrant A3,343,648512,567
Events in quadrant B3,499,904517,132
Events in quadrant C3,333,427494,047
Events in quadrant D3,573,955488,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139222
B0142982
C0137502
D0146182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6455721.115414%
B64561121.734820%
C64561011.564436%
D6456761.177200%

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 7665 6456 0 0 0.00% 0.00%
B 7666 6457 19 19 0.25% 0.29%
C 7666 6457 0 0 0.00% 0.00%
D 7666 6457 27 27 0.35% 0.42%

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 9267 48.89 866 849 172.2
A 0 226 7586 39.12 866 849 172.2
A 12 194 6279 31.53 866 849 172.2
B 0 197 85300 521.87 854 833 161.9
B 3 64 30767 184.94 854 833 161.9
B 12 111 18826 111.17 854 833 161.9
C 14 238 131009 693.51 816 824 187.7
C 9 54 11183 55.18 816 824 187.7
C 3 233 10506 51.57 816 824 187.7
D 1 52 301448 1484.23 838 815 202.6
D 13 168 49904 242.35 838 815 202.6
D 7 96 34497 166.29 838 815 202.6

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