ASTROSAT CZTI

Data Quality Report

Orbit 40760

Creation date: 2024-06-27T22:20:07.627936
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_001T10_9000005566_40760cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40760cztM0_level2_quad_clean.evt
Size (bytes)517,991,04078,082,560
Size494.0 MB 74.5 MB
Events in quadrant A3,107,476586,410
Events in quadrant B2,578,127606,577
Events in quadrant C9,938,693317,124
Events in quadrant D3,134,773480,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127203
B0112832
C0332152
D0131322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5330681.275797%
B5330420.787992%
C5330286453.733583%
D533072713.639775%

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 7032 5331 37 37 0.53% 0.69%
B 7032 5331 19 19 0.27% 0.36%
C 7032 5330 2752 2752 39.14% 51.63%
D 7031 5330 47 47 0.67% 0.88%

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 504594 4226.01 580 568 119.3
A 6 10 313085 2620.3 580 568 119.3
A 12 189 23130 189.17 580 568 119.3
B 0 190 151629 1337.34 580 563 113.0
B 0 229 70347 617.78 580 563 113.0
B 15 85 51830 453.85 580 563 113.0
C 9 187 7852455 76795.54 444 447 102.2
C 15 214 179197 1748.24 444 447 102.2
C 0 10 74233 721.65 444 447 102.2
D 2 249 320126 2417.37 533 517 132.2
D 13 249 304719 2300.84 533 517 132.2
D 12 191 181890 1371.82 533 517 132.2

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