ASTROSAT CZTI

Data Quality Report

Orbit 06271

Creation date: 2024-06-27T15:04:58.833163
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/AS1C02_018T01_9000000822_06271cztM0_level2.evt modeM0/AS1C02_018T01_9000000822_06271cztM0_level2_quad_clean.evt
Size (bytes)614,712,96095,541,120
Size586.2 MB 91.1 MB
Events in quadrant A4,080,725599,772
Events in quadrant B4,297,421601,837
Events in quadrant C3,181,869621,246
Events in quadrant D6,565,987565,658

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166932
B0176881
C0147481
D0245041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7249520.717340%
B72491942.676231%
C7249150.206925%
D72495577.683818%

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 7569 7250 6 6 0.08% 0.08%
B 7569 7251 99 99 1.31% 1.37%
C 7569 7251 0 0 0.00% 0.00%
D 7569 7250 541 541 7.15% 7.46%

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 8 15 780117 4532.85 831 811 171.9
A 13 251 92790 535.0 831 811 171.9
A 0 226 8212 43.05 831 811 171.9
B 3 64 420029 2598.32 834 814 161.3
B 0 219 234740 1449.89 834 814 161.3
B 4 81 126976 781.96 834 814 161.3
C 9 54 7962 37.65 811 817 189.8
C 13 61 6515 30.03 811 817 189.8
C 1 16 6008 27.36 811 817 189.8
D 12 220 2830049 14404.72 789 763 196.4
D 2 63 206164 1045.76 789 763 196.4
D 2 152 181915 922.3 789 763 196.4

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