ASTROSAT CZTI

Data Quality Report

Orbit 12853

Creation date: 2024-06-27T16:33:09.390005
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/AS1G08_071T01_9000001888_12853cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12853cztM0_level2_quad_clean.evt
Size (bytes)529,168,32070,148,160
Size504.7 MB 66.9 MB
Events in quadrant A3,471,220425,610
Events in quadrant B4,762,833417,678
Events in quadrant C3,329,222423,099
Events in quadrant D4,023,887406,360

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142913
B0185442
C0137372
D0160542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64641161.794554%
B64645248.106436%
C6464801.237624%
D64642363.650990%

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 7785 6466 0 0 0.00% 0.00%
B 7785 6466 275 275 3.53% 4.25%
C 7785 6466 0 0 0.00% 0.00%
D 7785 6466 147 147 1.89% 2.27%

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 12 189 58531 329.27 886 871 175.1
A 0 226 7902 40.15 886 871 175.1
A 12 194 7014 35.08 886 871 175.1
B 4 239 966410 6101.96 855 838 158.2
B 0 219 129508 813.13 855 838 158.2
B 0 85 117625 738.04 855 838 158.2
C 13 61 6306 28.03 852 858 194.3
C 14 234 3942 15.87 852 858 194.3
C 4 175 2589 8.91 852 858 194.3
D 1 52 684664 3417.27 850 830 200.1
D 13 104 69196 341.64 850 830 200.1
D 4 95 28951 140.53 850 830 200.1

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