ASTROSAT CZTI

Data Quality Report

Orbit 39576

Creation date: 2024-06-27T22:06:20.754994
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/AS1A12_018T01_9000005488_39576cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39576cztM0_level2_quad_clean.evt
Size (bytes)471,784,32088,246,080
Size449.9 MB 84.2 MB
Events in quadrant A4,114,712573,879
Events in quadrant B3,304,319632,527
Events in quadrant C5,683,450569,988
Events in quadrant D3,970,552542,437

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155353
B0131462
C0204422
D0153962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503559511.817279%
B50352655.263158%
C503565312.969215%
D50354088.103277%

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 5036 466 466 6.62% 9.25%
B 7039 5036 221 221 3.14% 4.39%
C 7039 5036 592 592 8.41% 11.76%
D 7039 5036 375 375 5.33% 7.45%

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 1381486 12606.69 541 530 109.5
A 10 83 413487 3769.86 541 530 109.5
A 6 10 111163 1009.96 541 530 109.5
B 5 172 1019468 9558.78 569 553 106.6
B 5 255 35821 330.86 569 553 106.6
B 12 111 12712 114.07 569 553 106.6
C 15 208 1777309 13874.69 558 561 128.1
C 9 187 1480783 11559.1 558 561 128.1
C 15 214 203828 1587.32 558 561 128.1
D 12 227 875179 6619.63 553 539 132.1
D 13 249 410052 3099.36 553 539 132.1
D 1 52 204898 1546.67 553 539 132.1

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