ASTROSAT CZTI

Data Quality Report

Orbit 42168

Creation date: 2024-06-27T22:37:41.227603
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/AS1A11_032T04_9000005766_42168cztM0_level2.fits modeM0/AS1A11_032T04_9000005766_42168cztM0_level2_quad_clean.evt
Size (bytes)326,295,36089,930,880
Size311.2 MB 85.8 MB
Events in quadrant A3,630,010592,238
Events in quadrant B2,513,152624,268
Events in quadrant C2,464,031595,039
Events in quadrant D3,064,288545,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140892
B0109662
C0105872
D0128112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52201913.659004%
B5220100.191571%
C522030.057471%
D52201372.624521%

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 7131 5221 153 153 2.15% 2.93%
B 7131 5221 5 5 0.07% 0.10%
C 7131 5221 1 1 0.01% 0.02%
D 7131 5221 123 123 1.72% 2.36%

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 15 222 785687 6645.77 573 563 118.1
A 10 83 554542 4689.22 573 563 118.1
A 12 189 47108 393.99 573 563 118.1
B 0 229 104385 922.48 580 564 112.5
B 0 156 102770 908.13 580 564 112.5
B 15 35 17789 153.05 580 564 112.5
C 15 214 217453 1617.54 570 573 134.1
C 15 159 21402 155.34 570 573 134.1
C 13 61 3844 24.39 570 573 134.1
D 12 6 597050 4326.61 564 548 137.9
D 1 52 174102 1258.84 564 548 137.9
D 2 249 37967 271.41 564 548 137.9

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