ASTROSAT CZTI

Data Quality Report

Orbit 54621

Creation date: 2025-11-02T09:15:11.306439
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_066T07_9000006522_54621cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54621cztM0_level2_quad_clean.evt
Size (bytes)586,903,680110,177,280
Size559.7 MB 105.1 MB
Events in quadrant A3,888,914730,448
Events in quadrant B3,972,795778,860
Events in quadrant C5,611,161672,244
Events in quadrant D7,659,818621,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173062
B0174552
C0220882
D0283202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76471622.118478%
B76462222.903479%
C76474445.806199%
D76475056.603897%

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 8862 7648 83 83 0.94% 1.09%
B 8861 7647 41 41 0.46% 0.54%
C 8862 7648 341 341 3.85% 4.46%
D 8862 7647 151 151 1.70% 1.97%

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 11 3 223494 1059.12 856 834 210.2
A 0 8 86922 409.49 856 834 210.2
A 13 248 66250 311.16 856 834 210.2
B 5 172 418994 2273.73 850 820 183.9
B 10 247 92501 498.5 850 820 183.9
B 10 14 60045 322.02 850 820 183.9
C 9 237 1134128 5011.83 823 817 226.1
C 13 3 696266 3075.48 823 817 226.1
C 14 96 196694 866.22 823 817 226.1
D 2 62 3329420 14284.36 812 775 233.0
D 8 160 428460 1835.34 812 775 233.0
D 2 172 323211 1383.68 812 775 233.0

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