ASTROSAT CZTI

Data Quality Report

Orbit 34275

Creation date: 2024-06-27T20:58:33.160888
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_086T01_9000004890_34275cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34275cztM0_level2_quad_clean.evt
Size (bytes)466,364,16069,255,360
Size444.8 MB 66.0 MB
Events in quadrant A2,434,026443,579
Events in quadrant B3,512,108438,502
Events in quadrant C2,773,436447,614
Events in quadrant D5,052,187403,303

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105512
B0136311
C0112021
D0185441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518650.096413%
B51862715.225607%
C5186220.424219%
D51863346.440417%

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 7039 5187 0 0 0.00% 0.00%
B 7039 5187 194 194 2.76% 3.74%
C 7039 5187 15 15 0.21% 0.29%
D 7039 5187 318 318 4.52% 6.13%

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 9 143 21317 167.68 618 606 123.5
A 10 83 18487 144.77 618 606 123.5
A 13 254 8739 65.85 618 606 123.5
B 5 172 830820 7211.93 609 594 115.1
B 5 31 151341 1309.5 609 594 115.1
B 0 189 29815 253.83 609 594 115.1
C 15 214 222766 1573.3 615 620 141.2
C 14 254 92409 650.08 615 620 141.2
C 0 10 26765 185.17 615 620 141.2
D 2 250 1090952 7495.59 600 585 145.5
D 8 195 953993 6554.08 600 585 145.5
D 1 52 214051 1467.45 600 585 145.5

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