ASTROSAT CZTI

Data Quality Report

Orbit 40144

Creation date: 2024-06-27T22:12:52.507343
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_042T01_9000005522_40144cztM0_level2.fits modeM0/AS1A12_042T01_9000005522_40144cztM0_level2_quad_clean.evt
Size (bytes)600,753,60069,912,000
Size572.9 MB 66.7 MB
Events in quadrant A2,705,035588,347
Events in quadrant B2,422,962607,644
Events in quadrant C13,010,79348,131
Events in quadrant D3,689,179504,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113173
B0110252
C0422812
D0148002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5258130.247242%
B5258210.399391%
C5258489993.172309%
D52583717.055915%

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 7321 5259 11 11 0.15% 0.21%
B 7321 5259 12 12 0.16% 0.23%
C 7320 5257 4874 4874 66.58% 92.71%
D 7321 5259 390 390 5.33% 7.42%

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 83 458755 4079.36 553 542 112.3
A 12 189 59832 527.84 553 542 112.3
A 2 79 35271 309.18 553 542 112.3
B 4 171 215503 2032.03 553 538 105.8
B 0 190 16996 155.58 553 538 105.8
B 12 111 13233 120.0 553 538 105.8
C 9 187 11879029 200066.21 254 255 59.4
C 15 214 107300 1802.89 254 255 59.4
C 14 254 9210 150.82 254 255 59.4
D 12 227 973533 7775.59 514 499 125.1
D 12 0 487589 3892.38 514 499 125.1
D 13 249 109963 874.74 514 499 125.1

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