ASTROSAT CZTI

Data Quality Report

Orbit 38191

Creation date: 2024-06-27T21:49:34.238873
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/AS1A07_145T01_9000005370_38191cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38191cztM0_level2_quad_clean.evt
Size (bytes)334,670,40097,666,560
Size319.2 MB 93.1 MB
Events in quadrant A2,964,122653,823
Events in quadrant B2,649,536671,426
Events in quadrant C2,787,144640,831
Events in quadrant D3,541,389590,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121723
B0117462
C0117922
D0143092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A572990.157095%
B5729270.471286%
C5729110.192006%
D5729240.418921%

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 7162 5730 6 6 0.08% 0.10%
B 7162 5730 14 14 0.20% 0.24%
C 7162 5730 5 5 0.07% 0.09%
D 7162 5730 17 17 0.24% 0.30%

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 379948 2898.91 647 634 130.8
A 12 189 34873 261.67 647 634 130.8
A 12 16 22107 164.11 647 634 130.8
B 5 172 87633 697.13 641 624 124.8
B 12 111 15638 120.29 641 624 124.8
B 11 111 14320 109.73 641 624 124.8
C 15 214 236923 1613.14 629 634 146.5
C 14 254 62404 421.7 629 634 146.5
C 0 10 12699 82.37 629 634 146.5
D 10 203 689289 4476.32 631 614 153.8
D 14 52 88547 571.56 631 614 153.8
D 2 16 59704 384.08 631 614 153.8

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