ASTROSAT CZTI

Data Quality Report

Orbit 14765

Creation date: 2024-06-27T16:59:25.934498
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/AS1A04_022T06_9000002182_14765cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14765cztM0_level2_quad_clean.evt
Size (bytes)639,708,48070,562,880
Size610.1 MB 67.3 MB
Events in quadrant A6,101,459413,599
Events in quadrant B3,550,729430,854
Events in quadrant C5,742,121414,156
Events in quadrant D3,534,701420,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225773
B0145782
C0215482
D0145912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6557140521.427482%
B65571221.860607%
C655786113.131005%
D65571652.516395%

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 7768 6559 1237 1237 15.92% 18.86%
B 7768 6559 4 4 0.05% 0.06%
C 7768 6559 536 536 6.90% 8.17%
D 7768 6559 70 70 0.90% 1.07%

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 14 237 2828454 18978.62 739 725 149.0
A 0 23 290678 1946.05 739 725 149.0
A 12 189 97513 649.6 739 725 149.0
B 4 142 37896 230.07 864 844 161.0
B 0 219 34067 206.3 864 844 161.0
B 0 190 25222 151.37 864 844 161.0
C 4 254 1996067 11053.36 789 794 180.5
C 3 233 494078 2732.68 789 794 180.5
C 0 207 158703 874.78 789 794 180.5
D 5 222 148268 690.99 843 821 213.4
D 2 136 57239 264.39 843 821 213.4
D 13 172 49605 228.62 843 821 213.4

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