ASTROSAT CZTI

Data Quality Report

Orbit 32830

Creation date: 2024-06-27T20:42:29.292453
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/AS1C06_002T09_9000004734_32830cztM0_level2.evt modeM0/AS1C06_002T09_9000004734_32830cztM0_level2_quad_clean.evt
Size (bytes)584,778,240102,104,640
Size557.7 MB 97.4 MB
Events in quadrant A2,852,585731,620
Events in quadrant B3,593,588733,482
Events in quadrant C2,659,398729,484
Events in quadrant D8,260,212540,325

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115723
B0139242
C0110742
D0281022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5086921.808887%
B50862745.387338%
C5086571.120724%
D5086191737.691703%

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 7210 5087 55 55 0.76% 1.08%
B 7210 5087 172 172 2.39% 3.38%
C 7210 5087 34 34 0.47% 0.67%
D 7210 5087 1818 1818 25.21% 35.74%

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 14 238 295031 2391.39 622 612 123.1
A 14 239 106803 862.53 622 612 123.1
A 9 143 19203 151.0 622 612 123.1
B 5 172 755054 6523.93 616 601 115.6
B 0 219 236839 2042.8 616 601 115.6
B 0 229 59000 504.99 616 601 115.6
C 0 10 150378 1103.58 598 604 135.7
C 9 160 99767 730.66 598 604 135.7
C 1 241 38356 278.17 598 604 135.7
D 7 80 4605559 38723.51 494 482 118.9
D 8 195 810592 6812.11 494 482 118.9
D 2 250 387044 3250.55 494 482 118.9

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