ASTROSAT CZTI

Data Quality Report

Orbit 11376

Creation date: 2024-06-27T16:12:02.692739
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_022T02_9000001662_11376cztM0_level2.evt modeM0/AS1A04_022T02_9000001662_11376cztM0_level2_quad_clean.evt
Size (bytes)541,886,400108,550,080
Size516.8 MB 103.5 MB
Events in quadrant A4,046,602707,047
Events in quadrant B4,652,141691,043
Events in quadrant C3,093,054757,443
Events in quadrant D4,200,054699,873

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162452
B0179371
C0130471
D0166131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61941392.244107%
B61944767.684856%
C6194520.839522%
D61942163.487246%

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 7524 6195 40 40 0.53% 0.65%
B 7524 6195 290 290 3.85% 4.68%
C 7524 6195 0 0 0.00% 0.00%
D 7524 6195 121 121 1.61% 1.95%

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 15 174 674780 4254.59 791 775 158.4
A 8 5 231903 1458.97 791 775 158.4
A 8 15 63828 398.02 791 775 158.4
B 4 239 1311962 9247.22 767 749 141.8
B 3 64 146801 1030.02 767 749 141.8
B 11 51 112966 791.4 767 749 141.8
C 13 61 5754 27.08 792 797 183.0
C 8 222 2855 11.24 792 797 183.0
C 12 4 2672 10.24 792 797 183.0
D 1 52 384741 2071.86 770 753 185.3
D 14 34 250968 1350.07 770 753 185.3
D 2 120 207973 1118.09 770 753 185.3

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