ASTROSAT CZTI

Data Quality Report

Orbit 22174

Creation date: 2024-06-27T18:37:45.923769
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/AS1A07_007T03_9000003280_22174cztM0_level2.evt modeM0/AS1A07_007T03_9000003280_22174cztM0_level2_quad_clean.evt
Size (bytes)465,883,20076,276,800
Size444.3 MB 72.7 MB
Events in quadrant A3,310,820479,914
Events in quadrant B3,364,863487,455
Events in quadrant C3,309,103456,890
Events in quadrant D3,693,841442,659

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135412
B0137222
C0135293
D0150522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6346450.709108%
B6346681.071541%
C6345741.166273%
D6345661.040189%

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 7636 6347 0 0 0.00% 0.00%
B 7636 6347 0 0 0.00% 0.00%
C 7635 6346 0 0 0.00% 0.00%
D 7635 6346 42 42 0.55% 0.66%

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 11113 60.59 859 844 169.5
A 0 226 7439 38.91 859 844 169.5
A 3 137 6707 34.59 859 844 169.5
B 12 111 18918 114.45 855 837 158.0
B 11 111 16677 100.26 855 837 158.0
B 14 111 14949 89.32 855 837 158.0
C 14 238 130976 698.91 812 822 186.2
C 0 10 10161 50.15 812 822 186.2
C 13 61 5756 26.49 812 822 186.2
D 1 52 522607 2640.28 819 795 197.6
D 13 172 31254 154.12 819 795 197.6
D 2 136 29514 145.31 819 795 197.6

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