ASTROSAT CZTI

Data Quality Report

Orbit 19274

Creation date: 2024-06-27T18:00:56.358089
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_107T01_9000002852_19274cztM0_level2.evt modeM0/AS1A05_107T01_9000002852_19274cztM0_level2_quad_clean.evt
Size (bytes)480,781,44088,752,960
Size458.5 MB 84.6 MB
Events in quadrant A3,397,593548,298
Events in quadrant B3,511,388560,102
Events in quadrant C3,430,883547,385
Events in quadrant D3,730,311529,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147472
B0148472
C0147232
D0158822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72121071.483638%
B72131171.622071%
C72131221.691391%
D72131912.647997%

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 8727 7212 1 1 0.01% 0.01%
B 8728 7213 5 5 0.06% 0.07%
C 8728 7214 0 0 0.00% 0.00%
D 8728 7213 76 76 0.87% 1.05%

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 4 2 12434 65.47 875 856 176.8
A 9 143 11378 59.5 875 856 176.8
A 13 254 9187 47.11 875 856 176.8
B 0 229 33877 194.8 873 851 169.5
B 12 111 21458 121.55 873 851 169.5
B 0 198 19062 107.41 873 851 169.5
C 14 238 130946 657.47 841 845 197.9
C 3 233 14376 68.38 841 845 197.9
C 13 61 5974 25.92 841 845 197.9
D 1 52 344620 1649.92 848 822 208.4
D 10 66 66206 313.78 848 822 208.4
D 7 238 47999 226.41 848 822 208.4

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