ASTROSAT CZTI

Data Quality Report

Orbit 03142

Creation date: 2024-06-27T14:25:10.406468
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/AS1T01_118T01_9000000430_03142cztM0_level2.evt modeM0/AS1T01_118T01_9000000430_03142cztM0_level2_quad_clean.evt
Size (bytes)418,181,76061,375,680
Size398.8 MB 58.5 MB
Events in quadrant A2,955,686362,713
Events in quadrant B3,007,077365,131
Events in quadrant C3,024,252362,440
Events in quadrant D3,264,658343,957

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127982
B0128331
C0129701
D0138181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60721552.552701%
B60721332.190382%
C60491111.835014%
D60721943.194993%

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 7202 6072 7 7 0.10% 0.12%
B 7202 6072 2 2 0.03% 0.03%
C 7202 6050 5 5 0.07% 0.08%
D 7202 6072 54 54 0.75% 0.89%

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 31 88273 590.1 737 722 148.4
A 12 48 17160 110.79 737 722 148.4
A 12 194 8166 50.17 737 722 148.4
B 2 249 48577 338.14 742 724 141.5
B 5 70 26308 180.78 742 724 141.5
B 4 81 15272 102.8 742 724 141.5
C 14 223 76772 458.36 716 721 165.9
C 1 16 51751 307.56 716 721 165.9
C 1 192 48852 290.09 716 721 165.9
D 13 223 140245 816.52 714 694 170.9
D 12 233 118883 691.53 714 694 170.9
D 2 136 92261 535.77 714 694 170.9

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