ASTROSAT CZTI

Data Quality Report

Orbit 01830

Creation date: 2024-06-27T14:12:59.002088
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/AS1G02_021T08_9000000302_01830cztM0_level2.evt modeM0/AS1G02_021T08_9000000302_01830cztM0_level2_quad_clean.evt
Size (bytes)1,247,008,32076,331,520
Size1.2 GB 72.8 MB
Events in quadrant A8,808,964453,401
Events in quadrant B11,480,610453,444
Events in quadrant C8,567,683454,186
Events in quadrant D8,428,348444,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03133113
B0392091
C0306531
D0302351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7260210.289256%
B72622162.974387%
C7262310.426880%
D72621552.134398%

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 7727 7262 259 259 3.35% 3.57%
B 7727 7263 1461 1461 18.91% 20.12%
C 7727 7263 200 200 2.59% 2.75%
D 7727 7263 354 354 4.58% 4.87%

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 10 2 12177 17.76 2299 2308 555.8
A 15 236 7029 8.49 2299 2308 555.8
A -1 -1 -1 -1.0 2299 2308 555.8
B 8 3 2447541 4337.39 2378 2386 563.7
B 4 48 12671 18.24 2378 2386 563.7
B 4 174 9607 12.81 2378 2386 563.7
C 9 236 6191 6.36 2194 2272 616.3
C -1 -1 -1 -1.0 2194 2272 616.3
C -1 -1 -1 -1.0 2194 2272 616.3
D 13 53 327146 490.3 2105 2169 662.8
D 7 85 101961 150.56 2105 2169 662.8
D 13 105 70996 103.84 2105 2169 662.8

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