ASTROSAT CZTI

Data Quality Report

Orbit 04340

Creation date: 2024-06-27T14:40:35.204754
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/AS1G05_219T01_9000000540_04340cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04340cztM0_level2_quad_clean.evt
Size (bytes)788,834,88064,978,560
Size752.3 MB 62.0 MB
Events in quadrant A3,147,328459,272
Events in quadrant B14,112,333179,366
Events in quadrant C2,993,052450,409
Events in quadrant D3,210,218436,296

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133632
B0462181
C0130621
D0137551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6300811.285714%
B6300488177.476190%
C6300661.047619%
D63001071.698413%

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 7470 6300 6 6 0.08% 0.10%
B 7469 6299 4511 4511 60.40% 71.61%
C 7470 6300 5 5 0.07% 0.08%
D 7470 6300 52 52 0.70% 0.83%

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 14 111 51760 317.61 787 772 160.5
A 15 234 37052 225.99 787 772 160.5
A 13 14 13947 82.07 787 772 160.5
B 3 0 12163872 131572.17 483 474 92.4
B 14 167 27886 296.52 483 474 92.4
B 4 48 14470 151.4 483 474 92.4
C 9 247 27522 152.1 751 755 176.0
C 9 16 21445 117.57 751 755 176.0
C 8 128 6273 31.35 751 755 176.0
D 2 136 187166 1029.08 753 734 181.2
D 14 34 34065 183.98 753 734 181.2
D 9 35 31270 168.56 753 734 181.2

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