ASTROSAT CZTI

Data Quality Report

Orbit 34339

Creation date: 2024-06-27T20:59:18.539589
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/AS1C07_001T05_9000004902_34339cztM0_level2.evt modeM0/AS1C07_001T05_9000004902_34339cztM0_level2_quad_clean.evt
Size (bytes)549,106,56095,561,280
Size523.7 MB 91.1 MB
Events in quadrant A2,544,405640,047
Events in quadrant B3,139,272648,898
Events in quadrant C2,986,463648,803
Events in quadrant D7,571,074555,062

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116783
B0132812
C0124842
D0263772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5734230.401116%
B57341101.918382%
C5734631.098709%
D5734151726.456226%

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 7317 5735 13 13 0.18% 0.23%
B 7317 5735 52 52 0.71% 0.91%
C 7317 5735 48 48 0.66% 0.84%
D 7317 5735 1387 1387 18.96% 24.18%

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 57577 447.08 634 620 127.4
A 10 83 29942 230.16 634 620 127.4
A 13 254 8301 60.29 634 620 127.4
B 5 172 356830 2929.47 634 618 121.6
B 0 219 111584 912.58 634 618 121.6
B 4 171 95505 780.35 634 618 121.6
C 15 214 241506 1677.82 622 627 143.6
C 14 254 168551 1169.66 622 627 143.6
C 0 10 101793 704.66 622 627 143.6
D 12 235 2385502 17730.91 556 541 134.5
D 12 227 1759644 13077.99 556 541 134.5
D 8 195 879591 6535.27 556 541 134.5

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