ASTROSAT CZTI

Data Quality Report

Orbit 31990

Creation date: 2024-06-27T20:34:53.414528
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/AS1A10_058T12_9000004674_31990cztM0_level2.evt modeM0/AS1A10_058T12_9000004674_31990cztM0_level2_quad_clean.evt
Size (bytes)527,633,28072,884,160
Size503.2 MB 69.5 MB
Events in quadrant A3,293,022464,912
Events in quadrant B5,072,423456,137
Events in quadrant C3,676,181430,507
Events in quadrant D3,532,739437,412

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130971
B0189632
C0146591
D0139171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5986901.503508%
B59862123.541597%
C59861732.890077%
D59861372.288674%

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 7251 5986 0 0 0.00% 0.00%
B 7251 5986 42 42 0.58% 0.70%
C 7251 5986 1 1 0.01% 0.02%
D 7251 5986 67 67 0.92% 1.12%

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 11023 60.3 852 838 168.9
A 3 137 7964 42.19 852 838 168.9
A 0 226 7276 38.11 852 838 168.9
B 6 159 1541065 9975.97 820 804 154.4
B 10 245 113690 731.14 820 804 154.4
B 15 201 101248 650.56 820 804 154.4
C 3 233 401455 2192.08 789 797 182.8
C 14 238 130757 711.04 789 797 182.8
C 0 10 15626 81.13 789 797 182.8
D 2 250 157905 813.8 817 797 193.1
D 8 195 156770 807.92 817 797 193.1
D 12 233 102301 525.78 817 797 193.1

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