ASTROSAT CZTI

Data Quality Report

Orbit 30909

Creation date: 2024-06-27T20:21:02.950438
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/AS1C06_004T01_9000004466_30909cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30909cztM0_level2_quad_clean.evt
Size (bytes)1,336,446,720198,532,800
Size1.2 GB 189.3 MB
Events in quadrant A7,466,3401,278,905
Events in quadrant B12,611,2351,271,423
Events in quadrant C8,017,6381,189,314
Events in quadrant D11,346,6931,216,283

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322163
B0486433
C0335463
D0443463

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A153092341.528513%
B153104402.873939%
C1531012928.438929%
D153108365.460483%

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 16204 15311 39 39 0.24% 0.25%
B 16205 15310 18 18 0.11% 0.12%
C 16205 15312 12 12 0.07% 0.08%
D 16205 15312 603 603 3.72% 3.94%

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 13 324060 870.2 1849 1809 370.3
A 13 254 28643 72.46 1849 1809 370.3
A 3 137 18240 44.37 1849 1809 370.3
B 6 159 4302893 12489.63 1823 1777 344.4
B 0 190 467655 1352.82 1823 1777 344.4
B 6 36 394183 1139.47 1823 1777 344.4
C 14 238 605833 1538.54 1703 1709 392.7
C 14 254 457592 1161.01 1703 1709 392.7
C 3 233 157448 396.62 1703 1709 392.7
D 8 195 1915312 4649.25 1753 1712 411.6
D 12 218 1094188 2654.26 1753 1712 411.6
D 2 250 553357 1340.27 1753 1712 411.6

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