ASTROSAT CZTI

Data Quality Report

Orbit 15471

Creation date: 2024-06-27T17:08:58.352083
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/AS1A04_203T01_9000002284_15471cztM0_level2.evt modeM0/AS1A04_203T01_9000002284_15471cztM0_level2_quad_clean.evt
Size (bytes)494,357,76080,297,280
Size471.5 MB 76.6 MB
Events in quadrant A3,414,346508,162
Events in quadrant B3,368,192511,995
Events in quadrant C3,315,461492,166
Events in quadrant D4,440,532473,644

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139282
B0137011
C0136071
D0173561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6389600.939114%
B6389520.813899%
C6389500.782595%
D63892574.022539%

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 7630 6391 5 5 0.07% 0.08%
B 7630 6391 0 0 0.00% 0.00%
C 7630 6391 1 1 0.01% 0.02%
D 7630 6391 183 183 2.40% 2.86%

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 3 1 40546 228.15 865 849 174.0
A 15 69 16118 87.76 865 849 174.0
A 7 16 15505 84.23 865 849 174.0
B 0 189 28628 171.13 852 835 162.4
B 12 111 18172 106.75 852 835 162.4
B 11 111 15686 91.44 852 835 162.4
C 3 233 71093 377.97 816 820 185.9
C 14 238 32650 171.2 816 820 185.9
C 10 22 19408 99.98 816 820 185.9
D 1 52 952868 4707.46 828 806 202.2
D 2 33 185126 911.37 828 806 202.2
D 5 222 137419 675.48 828 806 202.2

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