ASTROSAT CZTI

Data Quality Report

Orbit 42813

Creation date: 2024-06-27T22:44:34.322350
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_001T12_9000005826_42813cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42813cztM0_level2_quad_clean.evt
Size (bytes)391,855,68093,971,520
Size373.7 MB 89.6 MB
Events in quadrant A3,179,461638,648
Events in quadrant B4,761,243596,566
Events in quadrant C2,903,419620,649
Events in quadrant D3,199,724575,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128012
B0183902
C0124662
D0139592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5929120.202395%
B592962110.473942%
C5929180.303593%
D5928560.944669%

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 7242 5930 5 5 0.07% 0.08%
B 7242 5930 499 499 6.89% 8.41%
C 7242 5930 12 12 0.17% 0.20%
D 7241 5929 50 50 0.69% 0.84%

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 661106 5063.18 636 623 130.4
A 12 189 27284 204.38 636 623 130.4
A 13 248 15036 110.49 636 623 130.4
B 4 81 1489881 12584.27 612 595 118.3
B 0 229 556320 4695.8 612 595 118.3
B 4 171 209434 1764.66 612 595 118.3
C 15 214 247042 1712.14 617 619 143.9
C 4 254 127372 880.68 617 619 143.9
C 14 254 42718 292.5 617 619 143.9
D 1 52 487040 3219.54 618 600 151.1
D 10 118 144187 950.34 618 600 151.1
D 12 233 32400 210.47 618 600 151.1

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