ASTROSAT CZTI

Data Quality Report

Orbit 48145

Creation date: 2024-08-23T15:28:00.085819
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/AS1C09_009T01_9000006406_48145cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48145cztM0_level2_quad_clean.evt
Size (bytes)460,434,24097,223,040
Size439.1 MB 92.7 MB
Events in quadrant A7,936,919831,824
Events in quadrant B1,254,31749,423
Events in quadrant C3,393,971820,861
Events in quadrant D3,900,703745,220

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284514
B076812
C0150102
D0164532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70755437.674912%
B70757075100.000000%
C7075680.961131%
D7075761.074205%

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 7745 7076 61 61 0.79% 0.86%
B 7744 7056 1 1 0.01% 0.01%
C 7745 7075 23 23 0.30% 0.33%
D 7745 7075 17 17 0.22% 0.24%

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 10 83 4695322 27526.94 812 796 170.5
A 13 248 65428 378.97 812 796 170.5
A 3 14 15757 87.72 812 796 170.5
B 2 177 975290 79431.24 50 49 12.3
B 0 200 33873 2754.89 50 49 12.3
B 4 21 22736 1847.81 50 49 12.3
C 10 187 106291 540.45 820 826 195.1
C 0 207 47137 237.32 820 826 195.1
C 12 2 36356 182.07 820 826 195.1
D 2 165 246707 1176.27 817 791 209.1
D 12 2 127923 608.1 817 791 209.1
D 2 37 112703 535.3 817 791 209.1

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