ASTROSAT CZTI

Data Quality Report

Orbit 39638

Creation date: 2024-06-27T22:07:10.017179
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_39638cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39638cztM0_level2_quad_clean.evt
Size (bytes)384,834,24085,760,640
Size367.0 MB 81.8 MB
Events in quadrant A3,765,834570,017
Events in quadrant B2,330,014594,256
Events in quadrant C4,333,862551,084
Events in quadrant D3,413,633518,869

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145203
B0107142
C0163922
D0138942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51731242.397062%
B5173110.212643%
C51732815.432051%
D51732063.982215%

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 6966 5174 90 90 1.29% 1.74%
B 6966 5174 4 4 0.06% 0.08%
C 6966 5174 283 283 4.06% 5.47%
D 6966 5173 178 178 2.56% 3.44%

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 15 222 1227310 11108.13 544 534 110.4
A 10 83 409976 3707.39 544 534 110.4
A 6 10 7045 58.96 544 534 110.4
B 4 251 109777 1037.53 547 531 105.3
B 5 255 30537 284.97 547 531 105.3
B 5 172 20413 188.82 547 531 105.3
C 9 187 1007263 8071.37 531 536 124.7
C 15 208 985446 7896.45 531 536 124.7
C 15 214 213637 1708.52 531 536 124.7
D 13 249 707864 5500.94 529 514 128.6
D 2 250 325368 2526.33 529 514 128.6
D 12 0 125688 973.46 529 514 128.6

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