ASTROSAT CZTI

Data Quality Report

Orbit 32703

Creation date: 2024-06-27T20:41:01.393331
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/AS1T04_063T01_9000004724_32703cztM0_level2.evt modeM0/AS1T04_063T01_9000004724_32703cztM0_level2_quad_clean.evt
Size (bytes)622,468,80080,616,960
Size593.6 MB 76.9 MB
Events in quadrant A4,602,400508,722
Events in quadrant B3,409,896550,377
Events in quadrant C4,604,385518,611
Events in quadrant D5,863,822478,097

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172993
B0135482
C0173332
D0213212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54994868.837971%
B54991091.982179%
C54992344.255319%
D549967312.238589%

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 7082 5500 370 370 5.22% 6.73%
B 7082 5500 55 55 0.78% 1.00%
C 7082 5500 228 228 3.22% 4.15%
D 7082 5500 598 598 8.44% 10.87%

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 15 249 2101683 16844.8 624 613 124.7
A 7 16 26155 204.78 624 613 124.7
A 14 238 23554 183.92 624 613 124.7
B 4 251 229516 1847.48 656 643 123.9
B 4 206 184040 1480.4 656 643 123.9
B 0 219 175701 1413.08 656 643 123.9
C 3 233 1296628 8930.65 622 628 145.1
C 0 10 568435 3912.72 622 628 145.1
C 9 236 233759 1606.49 622 628 145.1
D 2 249 749447 5291.0 600 588 141.5
D 8 195 444927 3139.44 600 588 141.5
D 12 233 408057 2878.94 600 588 141.5

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