ASTROSAT CZTI

Data Quality Report

Orbit 16589

Creation date: 2024-06-27T17:24:46.793521
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/AS1C04_001T01_9000002446_16589cztM0_level2.evt modeM0/AS1C04_001T01_9000002446_16589cztM0_level2_quad_clean.evt
Size (bytes)468,878,400125,487,360
Size447.2 MB 119.7 MB
Events in quadrant A3,055,298850,990
Events in quadrant B3,398,396859,063
Events in quadrant C3,753,722834,331
Events in quadrant D3,560,752812,616

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133973
B0142572
C0154622
D0151392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6363430.675782%
B6363721.131542%
C63631392.184504%
D6363711.115826%

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 8899 6366 4 4 0.04% 0.06%
B 8899 6366 7 7 0.08% 0.11%
C 8899 6366 0 0 0.00% 0.00%
D 8899 6365 29 29 0.33% 0.46%

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 15 174 104368 693.58 758 743 149.4
A 9 143 23561 152.72 758 743 149.4
A 15 223 7452 44.9 758 743 149.4
B 15 35 105596 737.67 763 742 142.1
B 0 85 88221 615.43 763 742 142.1
B 0 189 63779 443.48 763 742 142.1
C 3 233 744934 4357.89 741 744 170.8
C 14 238 114501 666.15 741 744 170.8
C 7 247 6810 35.52 741 744 170.8
D 5 222 372938 2070.28 743 721 179.8
D 1 52 147505 816.42 743 721 179.8
D 10 70 104027 574.59 743 721 179.8

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