ASTROSAT CZTI

Data Quality Report

Orbit 25015

Creation date: 2024-06-27T19:12:46.891050
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_027T16_9000003666_25015cztM0_level2.evt modeM0/AS1A07_027T16_9000003666_25015cztM0_level2_quad_clean.evt
Size (bytes)665,239,68099,388,800
Size634.4 MB 94.8 MB
Events in quadrant A3,244,380662,340
Events in quadrant B3,326,811675,175
Events in quadrant C9,882,299562,767
Events in quadrant D3,236,309638,348

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138952
B0141172
C0341729
D0139542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6752230.340640%
B6752460.681280%
C6751240135.565101%
D6751370.548067%

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 7617 6753 0 0 0.00% 0.00%
B 7617 6753 0 0 0.00% 0.00%
C 7616 6752 1703 1703 22.36% 25.22%
D 7616 6752 5 5 0.07% 0.07%

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 6 16 14082 79.15 838 822 167.5
A 13 254 8890 48.16 838 822 167.5
A 3 137 7408 39.31 838 822 167.5
B 3 209 25735 155.22 835 811 160.6
B 12 111 19046 113.56 835 811 160.6
B 11 111 17267 102.48 835 811 160.6
C 7 247 6755077 38128.37 759 765 177.1
C 14 238 118126 662.51 759 765 177.1
C 2 16 28037 153.95 759 765 177.1
D 8 195 47456 233.09 831 808 200.1
D 2 234 25433 123.05 831 808 200.1
D 2 153 23909 115.43 831 808 200.1

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