ASTROSAT CZTI

Data Quality Report

Orbit 15659

Creation date: 2024-06-27T17:11:44.790638
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/AS1T02_084T01_9000002318_15659cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15659cztM0_level2_quad_clean.evt
Size (bytes)460,247,04085,919,040
Size438.9 MB 81.9 MB
Events in quadrant A3,280,680533,777
Events in quadrant B3,426,547545,780
Events in quadrant C3,416,413530,489
Events in quadrant D3,352,641517,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140053
B0143352
C0142282
D0143922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6796520.765156%
B6796670.985874%
C6796961.412596%
D6796801.177163%

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 9136 6796 0 0 0.00% 0.00%
B 9136 6796 5 5 0.05% 0.07%
C 9136 6796 1 1 0.01% 0.01%
D 9136 6796 22 22 0.24% 0.32%

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 0 226 7588 40.07 850 833 168.6
A 12 194 6331 32.62 850 833 168.6
A 3 137 5685 28.78 850 833 168.6
B 0 189 20355 122.53 855 835 159.3
B 0 219 19865 119.45 855 835 159.3
B 12 111 18566 111.3 855 835 159.3
C 14 238 129344 675.94 827 833 190.1
C 3 233 40332 207.76 827 833 190.1
C 5 96 7708 36.16 827 833 190.1
D 1 52 94850 469.87 830 809 200.1
D 13 104 33179 161.74 830 809 200.1
D 2 234 28337 137.54 830 809 200.1

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