ASTROSAT CZTI

Data Quality Report

Orbit 13278

Creation date: 2024-06-27T16:38:38.768405
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/AS1A04_167T02_9000001974_13278cztM0_level2.evt modeM0/AS1A04_167T02_9000001974_13278cztM0_level2_quad_clean.evt
Size (bytes)798,151,68093,847,680
Size761.2 MB 89.5 MB
Events in quadrant A3,413,217609,691
Events in quadrant B7,330,086551,877
Events in quadrant C3,368,066629,330
Events in quadrant D9,559,098533,726

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151622
B0267411
C0151681
D0336971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74211121.509231%
B7421193226.034227%
C7421580.781566%
D7421170422.961865%

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 7627 7423 0 0 0.00% 0.00%
B 7627 7422 1214 1214 15.92% 16.36%
C 7627 7423 2 2 0.03% 0.03%
D 7627 7423 1383 1383 18.13% 18.63%

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 8 15 32057 174.74 867 847 178.6
A 1 162 28390 154.21 867 847 178.6
A 1 178 9435 48.08 867 847 178.6
B 4 239 4137850 29482.56 720 701 140.3
B 0 244 113668 805.04 720 701 140.3
B 3 64 106753 755.76 720 701 140.3
C 15 208 37479 187.34 847 852 195.5
C 8 128 10368 48.67 847 852 195.5
C 14 234 6609 29.45 847 852 195.5
D 1 52 4733215 25296.75 768 744 187.1
D 13 249 1804783 9643.23 768 744 187.1
D 8 195 53677 282.95 768 744 187.1

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