ASTROSAT CZTI

Data Quality Report

Orbit 18714

Creation date: 2024-06-27T17:53:50.041768
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/AS1A05_165T07_9000002796_18714cztM0_level2.evt modeM0/AS1A05_165T07_9000002796_18714cztM0_level2_quad_clean.evt
Size (bytes)537,649,92068,198,400
Size512.7 MB 65.0 MB
Events in quadrant A3,604,286406,625
Events in quadrant B3,586,668414,100
Events in quadrant C5,046,544391,537
Events in quadrant D3,597,358391,580

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148272
B0148042
C0200075
D0150072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6613891.345834%
B6613931.406321%
C66122013.039927%
D6612891.346038%

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 7873 6613 1 1 0.01% 0.02%
B 7873 6613 9 9 0.11% 0.14%
C 7872 6613 0 0 0.00% 0.00%
D 7872 6612 19 19 0.24% 0.29%

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 0 13 42579 232.9 913 895 179.0
A 14 111 22417 120.25 913 895 179.0
A 9 143 14559 76.35 913 895 179.0
B 3 64 29201 168.62 902 880 168.0
B 12 111 19451 110.57 902 880 168.0
B 11 111 17258 97.51 902 880 168.0
C 3 233 1527835 7674.22 867 874 199.0
C 14 238 137627 687.3 867 874 199.0
C 13 61 6081 26.17 867 874 199.0
D 7 238 195972 914.26 886 862 213.4
D 14 34 29416 133.8 886 862 213.4
D 2 234 26152 118.51 886 862 213.4

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