ASTROSAT CZTI

Data Quality Report

Orbit 35510

Creation date: 2022-04-23T10:29:30.110614
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/AS1A11_097T07_9000005084_35510cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35510cztM0_level2_quad_clean.evt
Size (bytes)435,159,36046,261,440
Size415.0 MB 44.1 MB
Events in quadrant A2,445,116272,392
Events in quadrant B2,676,996275,922
Events in quadrant C4,967,049251,573
Events in quadrant D2,753,494252,983

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102383
B0110272
C0181522
D0114182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495580.161453%
B4955831.675076%
C495551510.393542%
D4955681.372351%

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 7018 4956 0 0 0.00% 0.00%
B 7018 4956 33 33 0.47% 0.67%
C 7018 4956 390 390 5.56% 7.87%
D 7018 4956 52 52 0.74% 1.05%

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 128874 1075.75 592 581 119.3
A 15 169 19383 157.66 592 581 119.3
A 13 254 7652 59.29 592 581 119.3
B 5 172 168378 1492.3 587 572 112.4
B 5 236 154778 1371.35 587 572 112.4
B 0 219 19270 166.28 587 572 112.4
C 0 10 1066954 8348.05 550 555 127.7
C 0 239 1048269 8201.78 550 555 127.7
C 0 207 392402 3067.48 550 555 127.7
D 7 80 232590 1675.38 566 552 138.5
D 13 249 114450 822.38 566 552 138.5
D 8 195 57550 411.54 566 552 138.5

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