ASTROSAT CZTI

Data Quality Report

Orbit 10870

Creation date: 2024-06-27T16:04:57.147996
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/AS1A03_118T01_9000001570_10870cztM0_level2.evt modeM0/AS1A03_118T01_9000001570_10870cztM0_level2_quad_clean.evt
Size (bytes)583,113,60089,959,680
Size556.1 MB 85.8 MB
Events in quadrant A5,413,499569,332
Events in quadrant B4,205,928590,686
Events in quadrant C2,811,693601,267
Events in quadrant D4,815,961537,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204402
B0164371
C0125531
D0184021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A609162210.211788%
B60913826.271548%
C6091380.623871%
D609162610.277459%

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 7341 6092 417 417 5.68% 6.85%
B 7341 6092 252 252 3.43% 4.14%
C 7341 6092 4 4 0.05% 0.07%
D 7341 6092 569 569 7.75% 9.34%

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 8 5 2448086 16657.06 722 707 146.9
A 15 223 91011 614.62 722 707 146.9
A 15 239 36139 241.15 722 707 146.9
B 4 239 1240253 8960.84 729 711 138.3
B 0 245 54679 390.14 729 711 138.3
B 0 219 26377 185.54 729 711 138.3
C 1 3 18358 107.34 714 717 164.3
C 13 61 5387 28.42 714 717 164.3
C 14 128 4600 23.63 714 717 164.3
D 1 52 971876 5928.1 682 663 163.8
D 10 199 846362 5161.99 682 663 163.8
D 8 195 122323 742.59 682 663 163.8

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