ASTROSAT CZTI

Data Quality Report

Orbit 29642

Creation date: 2024-06-27T20:06:22.104988
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/AS1T03_286T01_9000004268_29642cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29642cztM0_level2_quad_clean.evt
Size (bytes)533,491,200113,950,080
Size508.8 MB 108.7 MB
Events in quadrant A3,155,767761,536
Events in quadrant B3,243,135783,485
Events in quadrant C3,355,402759,786
Events in quadrant D5,968,263699,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138132
B0140032
C0142573
D0222882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6404350.546533%
B6404580.905684%
C64031582.467593%
D640367410.526316%

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 7529 6405 8 8 0.11% 0.12%
B 7529 6405 6 6 0.08% 0.09%
C 7528 6403 29 29 0.39% 0.45%
D 7528 6403 492 492 6.54% 7.68%

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 12 96 55197 340.51 803 786 159.8
A 13 254 12517 73.41 803 786 159.8
A 3 137 7682 43.16 803 786 159.8
B 0 156 24296 155.8 801 780 150.9
B 15 32 18482 117.28 801 780 150.9
B 12 111 18078 114.6 801 780 150.9
C 10 22 135124 730.07 785 791 184.0
C 14 238 127195 686.98 785 791 184.0
C 2 114 15382 79.3 785 791 184.0
D 7 80 1944260 10671.99 762 739 182.1
D 8 195 511367 2803.89 762 739 182.1
D 7 238 241979 1324.66 762 739 182.1

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