ASTROSAT CZTI

Data Quality Report

Orbit 55146

Creation date: 2025-12-07T17:37:48.489772
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/AS1A14_022T16_9000006532_55146cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55146cztM0_level2_quad_clean.evt
Size (bytes)649,969,92098,095,680
Size619.9 MB 93.6 MB
Events in quadrant A5,522,466646,772
Events in quadrant B3,710,701714,400
Events in quadrant C4,210,608637,561
Events in quadrant D10,046,221460,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216440
B0165610
C0179290
D0349842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73504536.163265%
B73501441.959184%
C7351310.421711%
D7350199027.074830%

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 7350 7350 447 447 6.08% 6.08%
B 7350 7350 124 124 1.69% 1.69%
C 7351 7351 35 35 0.48% 0.48%
D 7350 7350 1977 1977 26.90% 26.90%

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 3 78 2299780 12413.08 746 727 185.2
A 0 8 152940 821.83 746 727 185.2
A 4 206 51997 276.82 746 727 185.2
B 2 249 467376 2868.64 748 719 162.7
B 5 185 147898 904.74 748 719 162.7
B 4 81 42443 256.49 748 719 162.7
C 1 16 940796 4650.03 734 727 202.2
C 6 223 120330 591.61 734 727 202.2
C 14 254 91337 448.2 734 727 202.2
D 11 129 6403445 34697.51 649 619 184.5
D 8 245 514017 2782.15 649 619 184.5
D 3 12 195057 1053.68 649 619 184.5

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