ASTROSAT CZTI

Data Quality Report

Orbit 33678

Creation date: 2024-06-27T20:51:25.010500
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/AS1T04_076T01_9000004810_33678cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33678cztM0_level2_quad_clean.evt
Size (bytes)772,505,28050,978,880
Size736.7 MB 48.6 MB
Events in quadrant A9,880,91915,871
Events in quadrant B4,327,804374,415
Events in quadrant C5,021,896380,898
Events in quadrant D3,777,338370,917

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0333293
B0164462
C0189152
D0149492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5705567299.421560%
B57054618.080631%
C57053756.573181%
D57051101.928133%

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 7229 5704 2036 2036 28.16% 35.69%
B 7230 5706 370 370 5.12% 6.48%
C 7230 5706 346 346 4.79% 6.06%
D 7230 5706 95 95 1.31% 1.66%

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 15 169 9681032 900864.23 43 42 10.7
A 15 237 28324 2631.78 43 42 10.7
A 10 83 2163 197.37 43 42 10.7
B 5 172 1329392 10557.66 655 638 125.9
B 4 170 251859 1996.08 655 638 125.9
B 15 222 48100 377.11 655 638 125.9
C 3 233 1995332 13248.2 646 652 150.6
C 15 214 244917 1622.35 646 652 150.6
C 0 10 164499 1088.23 646 652 150.6
D 8 195 301154 1838.75 661 644 163.4
D 2 250 281800 1720.33 661 644 163.4
D 13 249 170275 1037.93 661 644 163.4

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