ASTROSAT CZTI

Data Quality Report

Orbit 28419

Creation date: 2024-06-27T19:51:34.446581
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/AS1A10_058T13_9000004088_28419cztM0_level2.evt modeM0/AS1A10_058T13_9000004088_28419cztM0_level2_quad_clean.evt
Size (bytes)636,514,56074,724,480
Size607.0 MB 71.3 MB
Events in quadrant A3,622,097454,179
Events in quadrant B3,875,553460,197
Events in quadrant C3,658,944442,873
Events in quadrant D7,612,574383,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156800
B0162200
C0156100
D0276470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74931241.654878%
B74931852.468971%
C74931732.308822%
D7493100713.439210%

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 7633 7493 6 6 0.08% 0.08%
B 7633 7494 18 18 0.24% 0.24%
C 7633 7494 1 1 0.01% 0.01%
D 7633 7494 915 915 11.99% 12.21%

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 25857 132.9 922 902 187.8
A 12 96 22727 116.23 922 902 187.8
A 15 174 17327 87.47 922 902 187.8
B 10 245 243319 1343.86 919 894 180.4
B 12 111 22426 119.36 919 894 180.4
B 11 111 20539 108.9 919 894 180.4
C 14 238 140681 659.67 887 892 211.9
C 7 220 53312 247.37 887 892 211.9
C 13 61 6101 24.58 887 892 211.9
D 1 52 3022339 15022.81 837 814 201.1
D 8 195 1202254 5973.47 837 814 201.1
D 2 250 112093 553.27 837 814 201.1

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